In the typical single-stimulus perceptual identification task, accuracy is improved by prior study of test words, a repetition priming benefit. There is also a cost, inasmuch as previously studied words are likely to be produced as responses if the test word is orthographically similar but not identical to a studied word. In two-alternative forced-choice perceptual identification, a test word is flashed and followed by two alternatives, one of which is the correct response. When the two alternatives are orthographically similar, (...) test words identical to previously studied items are identified more accurately than new words but tests words orthographically similar to studied words are identified less accurately than new words . Ratcliff and McKoon argue that these are bias effects that arise in the decision stage of word identification. We report five experiments that examined the alternative hypothesis that these bias effects arise from postperceptual guessing strategies. In single-stimulus perceptual identification, repetition priming benefits were equally great for young and older adults who claimed to use deliberate guessing strategies and those who did not . In contrast, only groups of young and older people who claimed to deliberately guess studied words in a two-alternative forced-choice task showed reliable benefits and costs. Costs and benefits were abolished in the two-alternative forced-choice task when a very long study list was used, presumably because the increased retrieval burden made the use of deliberate guessing strategies less attractive . Under conditions similar to those of Experiment 3, repetition priming was observed in single-stimulus perceptual identification . These results are consistent with the view that costs and benefits in the forced-choice perceptual identification task arise from deliberate guessing strategies but that those in the single-stimulus task do not. The possibility that the observed relationship between strategy reports and priming effects reflects erroneous postexperimental assessments of strategies by participants is also considered. (shrink)

Optogenetics and DREADDs (Designer Receptors Exclusively Activated by Designer Drugs) are important research tools in recent neurobiology. These tools allow unprecedented control over activity in specifically targeted neurons in behaving animals. Two approaches in philosophy of neuroscience, mechanism and ruthless reductionism, provide explicit accounts of experiments and results using tools like these, but each offers a different picture about how levels of mechanisms relate. I argue here that the ruthless reductionist’s direct mind‐to‐cellular/molecular activities linkages “in a single bound” better (...) fits with both the experimental designs using these tools and some of the scientists’ own judgments about their results than does the mechanist’s “nested hierarchies of mechanisms‐within‐mechanisms.” So at least some important work in current neuroscience appears to be ruthlessly reductive. Mechanism may not correctly characterize all current work in neuroscience, despite its recent popularity. (shrink)

The scenario of Homo sapiens origin/s within Africa has become increasingly complex, with a pan-African perspective currently challenging the long-established single-origin hypothesis. In this paper, we review the lines of evidence employed in support of each model, highlighting inferential limitations and possible terminological misunderstandings. We argue that the metapopulation scenario envisaged by pan-African proponents well describes a mosaic diversification among late Middle Pleistocene groups. However, this does not rule out a major contribution that emerged from a single population (...) where crucial derived features—notably, a globular braincase—appeared as the result of a punctuated, cladogenetic event. Thus, we suggest that a synthesis is possible and propose a scenario that, in our view, better reconciles with consolidated expectations in evolutionary theory. These indicate cladogenesis in allopatry as an ordinary pattern for the origin of a new species, particularly during phases of marked climatic and environmental instability. (shrink)

Flickering light induces visual hallucinations in human observers. Despite a long history of the phenomenon, little is known about the dependence of flicker-induced subjective impressions on the flicker frequency. We investigate this question using Ganzfeld stimulation and an experimental paradigm combining a continuous frequency scan with a focus on re-occurring, whole percepts. On the single-subject level, we find a high degree of frequency stability of percepts. To generalize across subjects, we apply two rating systems, a set of complex (...) percept classes derived from subjects’ reports and an enumeration of elementary percept features, and determine distributions of occurrences over flicker frequency. We observe a stronger frequency specificity for complex percept classes than elementary percept features. Comparing the similarity relations among percept categories to those among frequency profiles, we observe that though percepts are preferentially induced by particular frequencies, the frequency does not unambiguously determine the experienced percept. (shrink)

A quasivariety of algebras has the joint embedding property (JEP) if and only if it is generated by a single algebra A. It is structurally complete if and only if the free ℵ0‐generated algebra in can serve as A. A consequence of this demand, called ‘passive structural completeness’ (PSC), is that the nontrivial members of all satisfy the same existential positive sentences. We prove that if is PSC then it still has the JEP, and if it has the JEP (...) and its nontrivial members lack trivial subalgebras, then its relatively simple members all belong to the universal class generated by one of them. Under these conditions, if is relatively semisimple then it is generated by one ‐simple algebra. We also prove that a quasivariety of finite type, with a finite nontrivial member, is PSC if and only if its nontrivial members have a common retract. The theory is then applied to the variety of De Morgan monoids, where we isolate the sub(quasi)varieties that are PSC and those that have the JEP, while throwing fresh light on those that are structurally complete. The results illuminate the extension lattices of intuitionistic and relevance logics. (shrink)

This book provides an account of discursive or reason-governed cognition, by synthesizing research in the philosophy of language, the philosophy of mind, and evolutionary anthropology. -/- Using the grasp of a natural language as a model for the autonomous or self-governed rationality of discursive cognition, the author uses a semantics for individual intentions, shared intentions, and normative attitudes as a framework for understanding what it is to be a rational animal. This semantics interprets claims about shared intentions and claims about (...) what people ought and may do as the expression of plans of action that involve taking the points of view of other people within a community. This has important consequences for our understanding of both the natural basis and the social relevance of intentional and normative mental states. In order to distinguish the strong and weak modal force, which characterizes normativity but not shared intentionality, the author argues that a notion of single-minded practical cognition is necessary. This account of single-mindedness is then used to shed light on the autonomy or self-government characteristic of discursive cognition, as manifest in a linguistic community whose members are able to adopt the standpoints of others. -/- Drawing together research in philosophy and the related sciences, the formal account of the semantic content of the claims we use to give expression to shared intentional and normative mental states integrates well with research in cognitive science, evolutionary anthropology, and social psychology concerning the ontogenetic and phylogenetic development of shared intentionality and norm psychology in human beings and other primates. The Single-Minded Animal will appeal to researchers and advanced students working on shared intentionality, normativity, rationality, cognitive science, social and developmental psychology, and evolutionary anthropology. (shrink)

Scholarship on Aristotle’s theory of visual perception has traditionally held that Aristotle had a single, static, conception of light and that he believed that illumination occurred prior to and independent of the actions of colours. I contend that this view precludes the medium from becoming actually transparent, thus making vision impossible. I here offer an alternative to the traditional interpretation, using contemporary conceptual tools to make good philosophical sense of Aristotle’s position. I call my view the ‘ecological’ interpretation. (...) It postulates two conceptions of light: non-visible mobile propagated light and visible static illumination produced by the interaction of propagated light with the environment’s coloured textured surfaces. I argue that these contemporary conceptual tools can find a foothold in and consistently enrich Aristotle’s extant position and that, with their aid, we can restore coherence to his theories of light and vision. (shrink)

Outer membrane proteins (OMPs) maintain the viability of Gram‐negative bacteria by functioning as receptors, transporters, ion channels, lipases, and porins. Folding and assembly of OMPs involves synchronized action of chaperones and multi‐protein machineries which escort the highly hydrophobic polypeptides to their target outer membrane in a folding competent state. Previous studies have identified proteins and their involvement along the OMP biogenesis pathway. Yet, the mechanisms of action and the intriguing ability of all these molecular machines to work without the typical (...) cellular energy source of ATP, but solely based on thermodynamic principles, are still not well understood. Here, we highlight how different single‐molecule studies can shed additional light on the mechanisms and kinetics of OMP biogenesis. (shrink)

“Light will be thrown on the origin of man and his history”: this was the single line that Charles Darwin devoted to human evolution in the Origin of Species (1859). At present, there is a number of extinct species, which we understand to be related to human evolution, demonstrating that the Darwin’s prediction was correct: light has been thrown, indeed. Moreover, the science of human origin (or palaeoanthropology) appears to be able to shed much light not (...) only on the natural history of humankind, but also on mechanisms and patterns of "evolution" as a general phenomenon. This is of special interest when we focus on data and hypotheses concerning the origin of our own species, Homo sapiens. (shrink)

What are the semantic representations that underlie language production? We use structural priming to distinguish between two competing theories. Thematic roles define semantic structure in terms of atomic units that specify event participants and are ordered with respect to each other through a hierarchy of roles. Event structures instead instantiate semantic structure as embedded sub‐predicates that impose an order on verbal arguments based on their relative positioning in these embeddings. Across two experiments, we found that priming for datives depended on (...) the degree of overlap in event structures. Specifically, while all dative structures showed priming, due to common syntax, there was a boost for compositional datives priming other compositional datives. Here, the two syntactic forms have distinct event structures. In contrast, there was no boost in priming for dative light verbs, where the two forms map onto a single event representation. On the thematic roles hypothesis, we would have expected a similar degree of priming for the two cases. Thus, our results support event structural approaches to semantic representation and not thematic roles. (shrink)

In Baumann (American Philosophical Quarterly 42: 71–79, 2005) I argued that reflections on a variation of the Monty Hall problem throws a very general skeptical light on the idea of single-case probabilities. Levy (Synthese, forthcoming, 2007) puts forward some interesting objections which I answer here.

The critical issue that I examine in my study, which is divided into two parts, is how we are to interpret, within what Kierkegaard regards as “the present age,” his concept of the single individual when viewed in light of the hermeneutical distinction that he makes between Christianity and Christendom. Since the distinction between Christianity and Christendom is not one between the religious and the secular or between faith and reason but one between what he calls indirect communication (...) and direct communication, we find that the single individual of the present age of modernity is at once religious and secular. (shrink)

In Part 2 of my study I focus on Works of Love of Kierkegaard in analyzing his concept of the single individual in light of what I call the hermeneutics of the relationship of the religious and the secular. I continue to emphasize that the hermeneutical distinction that Kierkegaard critically makes between Christianity and Christendom is the distinction, not between the religious and the secular but between, rather, a true understanding of the relationship of the religious and the (...) secular, on the one hand, and an idolatrous conception of that relationship, on the other. (shrink)

Sounds are heard, sometimes even felt, but in most cases they remain unseen. This ephemeral and invisible nature of sound was already considered a problem when the science of acoustics took form in the seventeenth century. The fact that sound could not be seen was described as a significant hindrance to its understanding. But it was precisely during this time that a wide variety of sounds attracted broad scientific attention across Europe. Scholars, natural philosophers, and mathematicians investigated and experimented with (...) sound and musical instruments and developed theories of hearing. This article looks at the role of images, diagrams, and visualization techniques in late seventeenth-century acoustics, bringing together the history of sound and the history of scientific images. Focusing on water and light as the dominant analogies for sound, the article demonstrates that visualization was an important tool for thinking about sound and allowed for the circulation of theories and experiments. At the same time, the epistemic status of these images remained contested, as there was no single model that could explain the different ways sound behaves as it moves through space and that could be visualized. (shrink)

There are two important aspects of any democratic decision: aggregation of preferences and deliberation about preferences. They are essential and complementary components of any decision making process. While the well-studied process of aggregation focuses on accumulating individual preferences without discussing their origin [4], deliberation can be seen as a conversation through which individuals justify their preferences, a process that might lead to changes in their opinions as they get influenced by one another. Till now, there has been a lot of (...) work on the ‘aggregation’ aspect (e.g., [12, 14, 6]). However, some recent work has focussed on the deliberation aspect as well [8, 9, 10, 15]. Sometimes, deliberation does not lead to unanimity in preferences, but the discussion can lead to some ‘preference uniformity’ (see how deliberation can help in bypassing social choice theory’s impossibility results in [5]), which might facilitate their eventual aggregation. In addition, the combination of both processes provides a more realistic model for decision making scenarios. In light of this status quo, our focus is on the formal study of achieving such preference uniformities, e.g., single-peaked, single-caved, single-crossing, value-restricted, best-restricted, worst-restricted, medium-restricted, or group-separable profiles. In this short abstract we provide our preliminary ideas towards achieving singlepeakedness of preference profiles via deliberation. In what follows, we define two preference upgrade operators based on [8, 9] and provide a preliminary discussion on how single-peaked preference profiles can be achieved through such operations. We will delve into the details of the logical language in the main paper. (shrink)

In social identity theory, the in-Christ identity is understood as primarily a socially directed process in which people categorise themselves relative to other groups. Intergroup behaviour would cause them to discriminate against the so-called ‘outgroup’, favouring the so-called ‘ingroup’. Although social identity complexity theory has moved beyond single ingroup-outgroup categorisation, it is a question if social identity theories can fully account for the in-Christ identity, especially within an African context. In African religious identity, identity is linked to both the (...) community and the ruling deities, which are perceived to be real entities that intervene in human affairs and identity, presupposing a supernaturalistic epistemology. Contribution: In this contribution, the naturalistic epistemological underpinnings of social identity theories are reconsidered in light of a supernatural aspect that is argued to be constitutive of the 1st century in-Christ identity as well as the African Christian identity. Amid current approaches to the in-Christ identity, which is mainly a Pauline concept, some of the main Pauline texts that have bearing on the in-Christ identity are revisited in light of current theories and epistemologies on identity. (shrink)

The more we rely on digital assistants, online search engines, and AI systems to revise our system of beliefs and increase our body of knowledge, the less we are able to resort to some independent criterion, unrelated to further digital tools, in order to asses the epistemic reliability of the outputs delivered by them. This raises some important questions to epistemology in general and pressing questions to applied to epistemology in particular. In this paper, we propose an experimental method for (...) the assessment of GPT-3’s capacity to generate consistent and coherent sets of outputs. When several outputs to one and the same input are very repetitive they tend to be consistent with each other, that is they do not contradict each other. But consistency does not make the set of outputs as a whole more informative than the outputs considered individually. We argue that the less informative a set of outputs is, the less coherent it is. We establish a conceptual distinction between consistency and coherence in the light of what some epistemologists refer to as a coherence theories of truth and justification. While much attention has been given to GPT-3’s capacity to produce internally coherent individual outputs, we argue, instead, that more attention should be given to its capacity to produce consistent and coherent outputs generated on a single-input-multiple-outputs basis. (shrink)

In the early 1960s of the 20th century de Broglie was able to explain the cosmological observable red shift, without ad hoc assumptions. Starting from basic quantum considerations he developed his tired light model for the photon. This model explains in a single and beautiful causal way the cosmological redshift without need of assuming the Big Bang and consequently a beginning for the universe. Evidence coming from Earth sciences seems also to confirm these ideas and furthermore concrete proposal (...) of laboratorial scale experiments that can test the model are reviewed. (shrink)

Light sheet microscopy is an easy to implement and extremely powerful alternative to established fluorescence imaging techniques such as laser scanning confocal, multi‐photon and spinning disk microscopy. By illuminating the sample only with a thin slice of light, photo‐bleaching is reduced to a minimum, making light sheet microscopy ideal for non‐destructive imaging of fragile samples over extended periods of time. Millimeter‐sized samples can be imaged rapidly with high resolution and high depth penetration. A large variety of instruments (...) have been developed and optimized for a number of different samples: Bessel beams form thin light sheets for single cells, and selective plane illumination microscopy (SPIM) offers multi‐view acquisition to image entire embryos with isotropic resolution. This review explains how light sheet microscopy involves a conceptually new microscope design and how it changes modern imaging in biology. (shrink)

This thesis uses high-precision single-photon experiments to shed new light on the role of reality, causality, and uncertainty in quantum mechanics. It provides a comprehensive introduction to the current understanding of quantum foundations and details three influential experiments that significantly advance our understanding of three core aspects of this problem. The first experiment demonstrates that the quantum wavefunction is part of objective reality, if there is any such reality in our world. The second experiment shows that quantum correlations (...) cannot be explained in terms of cause and effect, even when considering superluminal influences between measurement outcomes. The final experiment in this thesis demonstrates a novel uncertainty relation for joint quantum measurements, where the textbook relation does not apply. (shrink)

Rod photoreceptors are among the most sensitive light detectors in nature. They achieve their remarkable sensitivity across a wide variety of species through a number of essential adaptations: a specialized cellular geometry, a G‐protein cascade with an unusually stable receptor molecule, a low‐noise transduction mechanism, a nearly perfect effector enzyme, and highly evolved mechanisms of feedback control and receptor deactivation. Practically any change in protein expression, enzyme activity, or feedback control can be shown to impair photon detection, either by (...) decreasing sensitivity or signal‐to‐noise ratio, or by reducing temporal resolution. Comparison of mammals to amphibians suggests that rod outer‐segment morphology and the molecules and mechanism of transduction may have evolved together to optimize light sensitivity in darkness, which culminates in the extraordinary ability of these cells to respond to single photons at the ultimate limit of visual perception. (shrink)

Multigene delivery and expression systems are emerging as key technologies for many applications in contemporary biology. We have developed new methods for multigene delivery and expression in eukaryotic hosts for a variety of applications, including production of protein complexes for structural biology and drug development, provision of multicomponent protein biologics, and cell‐based assays. We implemented tandem recombineering to facilitate rapid generation of multicomponent gene expression constructs for efficient transformation of mammalian cells, resulting in homogenous cell populations. Analysis of multiple parameters (...) in living cells may require co‐expression of fluorescently tagged sensors simultaneously in a single cell, at defined and ideally controlled ratios. Our method enables such applications by overcoming currently limiting challenges.Here, we review recent multigene delivery and expression strategies and their exploitation in mammalian cells. We discuss applications in drug discovery assays, interaction studies, and biologics production, which may benefit in the future from our novel approach. (shrink)

This article sets out the moral failure of single-tier basic healthcare. Single-tier basic healthcare has been advocated on the grounds that the provision of healthcare should be divorced from ability to pay and unequal access to basic healthcare is morally intolerable. However, single-tier basic healthcare encounters a host of catastrophic moral failings. Given the fact of human pluralism it is impossible to objectively define “basic” healthcare. Attempts to provide single-tier healthcare therefore become political processes in which (...) interest groups compete for control of scarce resources with the most privileged possessing an inherent advantage. The focus on outputs in arguments for single-tier provision neglects the question of justice between individuals when some people provide resources for others without reciprocal benefits. The principle that only healthcare that can be provided to everyone should be provided at all leads to a leveling-down problem in which advocates of single-tier provision must prefer a situation where some individuals are made worse-off without any individual being made better-off compared to plausible multi-tier alternatives. Contemporary single-tier systems require the exclusion of noncitizens, meaning that their universalism is a myth. In the light of these pathologies, it is judged that multi-tier healthcare is morally required. (shrink)

This paper mainly studies the communication performance of visible light communication link in fire smoke environment. Compared with the previous studies, this study no longer only considers a single wavelength and considers the influence of smoke and background light noise. Firstly, the variation of background light noise caused by sunlight during a day was analyzed, then signal-to-noise ratio and bit error rate of the visible light communication link in fire smoke environment with different visibility were (...) calculated, and finally, the variation of received power with the angle β between the LED optical axis and the communication link was analyzed. The results show that, during a day from 07:00 to 18:30, background light noise first increases and then decreases, BER changes in the same trend and reaches the maximum at about 13:00, while SNR changes in the opposite trend and reaches the minimum at about 13:00. When visibility is 100 m, the maximum difference of SNR between 7:00 and 13:00 is about 19 dB, and the maximum difference of BER is about 5.3E-10. At 7:00, the maximum difference of SNR is about 13 dB between the visibility of 1 m and the visibility of 100 m, and the maximum difference of BER is about 1.44E − 11, and received power decreases with the increase of β. In addition, SNR increases with visibility of fire smoke environment, and BER changes in the opposite trend. Lastly, in order to enhance the performance of visible light communication in fire smoke environment, this paper gives the transmitting power scheme. (shrink)

Initially Einstein, Podolsky, and Rosen (EPR) and later Bell shed light on the non-local properties exhibited by subsystems in quantum mechanics. Separately, Kochen and Specker analyzed sets of measurements of compatible observables and found that a consistent coexistence of these results is impossible, i.e., quantum indefiniteness of measurement results. As a consequence, quantum contextuality, a more general concept compared to non-locality, leads to striking phenomena predicted by quantum theory. Here, we report neutron interferometric experiments which investigate entangled states in (...) a single-particle system: entanglement is, in this case, achieved not between particles, but between degrees of freedom i.e., between spin, path, and energy degrees of freedom. Appropriate combinations of the spin analysis and the position of the phase shifter in the interferometer allow an experimental verification of the violation of a Bell-like inequality. In addition, state tomography, tomographic analysis of the density matrix of a quantum system, and Kochen-Specker-like phenomena are presented to characterize neutrons’ entangled states and their peculiarity. Furthermore, a coherent energy manipulation scheme is accomplished with a radio-frequency (RF) spin-flipper. This scheme allows the (total) energy degree of freedom to be entangled: the remarkable behavior of a triply entangled GHZ-like state is demonstrated. (shrink)

In this article, we will attempt to understand Sellars’ puzzling notion of ‘adequate picturing’ and its relation to the Sellarsian ‘conceptual order’ through Spinoza’s intuitive knowledge. First, it will be suggested that there are important structural similarities between Sellarsian ‘adequate picturing’ and Spinoza’s intuitive knowledge which can illuminate some ‘dark’ and not so well understood features of Sellarsian picturing. However, there remain some deep differences between Sellars’ and Spinoza’s philosophy, especially with regard to their notion of ‘adequacy’ and the sense (...) in which an idea can be said to ‘correspond’ with its object. As a consequence of those differences it turns out that, from a Sellarsian viewpoint, Spinoza’s notion of intuitive knowledge is a version of the myth of the Given. However, Sellars’ own proposed way out of the Myth has problematic consequences by Sellars’ own lights: His sharp distinction between the ‘space of reasons’ level and the level of picturing makes the Sellarsian vision of the ‘stereoscopic fusion’ of those levels virtually unintelligible. Finally, it will be argued that a non-standard interpretation of Spinoza’s intuitive knowledge -proposed in Baltas -, combined with a Sellars-inspired bifurcated understanding of Dreyfusian expert knowledge, can provide the means 1) for constructing a notion of intuitive knowledge that evades the myth of the Given, and, 2) for making full sense of the claim that the ‘space of reasons’ dimension of understanding the world can in principle be fused with the ‘picturing’ dimension and provide us with a single complex coherent experience of reality and our place in it. (shrink)

There is a single unified conception of religious faith in Kierkegaard's Fear and Trembling and Concluding Unscientific Postscript: existential faith is absolute trust in an eschatological promise, i.e. a miraculous realization of ethical ideals that is beyond all human power to accomplish or even predict. Faith in this sense has the precondition of "infinite resignation," which is a purified state of ethical willing in which the agent accepts her/his own inability to actualize the ethical, outwardly or inwardly. This condition (...) is explored extensively by Climacus in this discussion of "existential pathos," which shows why the resigned agent has to trust in an absolute source of eschatological possibilities to guarantee the ultimate meaningfulness of his/her ethical striving. The distinction between Religiousness A and B, along with different senses of "the absurd" and "the absolute paradox" can all be explained in terms of different kinds of eschatological possibility. /// Segundo o autor do artigo, há uma única concepção do religioso presente nas obras Temor e Tremor e Postscript Conclusivo e Não-Científico de Søren Kierkegaard, concepção essa fundada na ideia de que a fé existencial consiste numa confiança absoluta na promessa escatológica, ou seja, numa realização miraculosa de ideais éticos que estão para além de todo e qualquer poder humano de os realizar ou mesmo sequer de os antecipar. Neste sentido, a fé tem como condição prévia a "resignação infinita", a qual consiste num estado purificado de vontade ética em que o agente aceita a sua própria incapacidade de actualizar o ético, seja isso de forma exterior ou interior. Esta condição é extensivamente explorada por Climacus na sua discussão do "pathos existencial", o qual mostra precisamente por que razão o agente resignado tem que confiar numa fonte absoluta de possibilidades escatológicas em ordem a poder fazer face ao mais radical sem-sentido inerente ao seu processo de actualização do ético. Assim, o artigo pretende mostrar até que ponto a distinção kierkegaardiana entre Religiosidade A e B, bem como os diferentes sentidos do "absurdo" e do "paradoxo absolute" podem ser explicados em termos dos diferentes tipos de possibilidade escatológica que o pensamento pode identificar. (shrink)

Photography is valued as a medium for recording and visually reproducing features of the world. I seek to challenge the view that photography is fundamentally a recording process and that every photograph is a record—a view that I claim is based on a ‘single-stage’ misconception of the process. I propose an alternative, ‘multi-stage’ account in which I argue that causal registration of light is not equivalent to recording and reproducing an image. Intervention or non-intervention by photographers is more (...) sophisticated than the traditional view allows. Using the multi-stage account, I describe four models for producing photographic images and pictures. (shrink)

Theories of sentence production that involve a convergence of activation from conceptual‐semantic and syntactic‐sequential units inspired a connectionist model that was trained to produce simple sentences. The model used a learning algorithm that resulted in a sharing of responsibility (or “division of labor”) between syntactic and semantic inputs for lexical activation according to their predictive power. Semantically rich, or “heavy”, verbs in the model came to rely on semantic cues more than on syntactic cues, whereas semantically impoverished, or “light”, (...) verbs relied more on syntactic cues. When the syntactic and semantic inputs were lesioned, the model exhibited patterns of production characteristic of agrammatic and anomic aphasic patients, respectively. Anomic models tended to lose the ability to retrieve heavy verbs, whereas agrammatic models were more impaired in retrieving light verbs. These results obtained in both sentence production and single‐word naming simulations. Moreover, simulated agrammatic lexical retrieval was more impaired overall in sentences than in single‐word tasks, in agreement with the literature. The results provide a demonstration of the division‐of‐labor principle, as well as general support for the claim that connectionist learning principles can contribute to the understanding of non‐transparent neuropsychological dissociations. (shrink)

The so-called quantum Zeno effect is essentially a consequence of the projection postulate for ideal measurements. To test the effect, Itanoet al. have performed an experiment on an ensemble of atoms where rapidly repeated level measurements were realized by means of short laser pulses. Using dynamical considerations, we give an explanation why the projection postulate can be applied in good approximation to such measurements. Corrections to ideal measurements are determined explicitly. This is used to discuss how far the experiment of (...) Itanoet al. can be considered as a test of the quantum Zeno effect. We also analyze a new possible experiment on a single atom where stochastic light and dark periods can be interpreted as manifestation of the quantum Zeno effect. We show that the measurement point of view gives a quick and intuitive understanding of experiments of the above type, although a finer analysis has to take the corrections into account. (shrink)

Participants were asked to draw inferences about correlation from single x,y observations. In Experiment 1 statistically sophisticated participants were given the univariate characteristics of distributions of x and y and asked to infer whether a single x, y observation came from a correlated or an uncorrelated population. In Experiment 2, students with a variety of statistical backgrounds assigned posterior probabilities to five possible populations based on single x, y observations, again given knowledge of the univariate statistics. In (...) Experiment 3, statistically naïve participants were given a problem analogous to that given in Experiment 1, framed verbally. Experiment 4 replicated Experiment 3 but added an “impossible to determine” response option. Models that rely on computing sample correlations make no predictions about these investigations. From a Bayesian perspective, participants’ inferences in all four experiments tended to make probabilistically valid inferences as long as the single datum was directional. The results are discussed in light of the Brunswikian notion of vicarious functioning. (shrink)

This is an excellent book about a variety of themes in seventeenth-century philosophy. Unlike books that try to do too much and succeed at little, this one claims to do a single thing but accomplishes much more than that. Jolley sets out to explore various views about ideas, primarily in the work of Descartes, Malebranche, and Leibniz, but also in others, such as Locke and Arnauld. He does so by examining the contexts in which the "way of ideas" occurs, (...) from innateness to causality to religious issues, in a variety of debates and encounters between these various philosophers. The result is not a comprehensive treatment of the doctrine of ideas in the seventeenth century; figures such as Hobbes and Spinoza are largely excluded and the treatment of Locke and others is very selective. But Jolley does provide something extremely valuable: an engaging and stimulating tour of a series of fascinating philosophical debates which constitute central dimensions of the seventeenth-century philosophical tradition. (shrink)

Although the present paper looks upon the formal apparatus of quantum mechanics as a calculus of correlations, it goes beyond a purely operationalist interpretation. Having established the consistency of the correlations with the existence of their correlata, and having justified the distinction between a domain in which outcome-indicating events occur and a domain whose properties only exist if their existence is indicated by such events, it explains the difference between the two domains as essentially the difference between the manifested world (...) and its manifestation. A single, intrinsically undifferentiated Being manifests the macroworld by entering into reflexive spatial relations. This atemporal process implies a new kind of causality and sheds new light on the mysterious nonlocality of quantum mechanics. Unlike other realist interpretations, which proceed from an evolving-states formulation, the present interpretation proceeds from Feynman’s formulation of the theory, and it introduces a new interpretive principle, replacing the collapse postulate and the eigenvalue–eigenstate link of evolving-states formulations. Applied to alternatives involving distinctions between regions of space, this principle implies that the spatiotemporal differentiation of the physical world is incomplete. Applied to alternatives involving distinctions between things, it warrants the claim that, intrinsically, all fundamental particles are identical in the strong sense of numerical identical. They are the aforementioned intrinsically undifferentiated Being, which manifests the macroworld by entering into reflexive spatial relations. (shrink)

In the present paper, on the basis of the theory of production principles and production revolutions, we reveal the interrelation between K-waves and major technological breakthroughs in history and make some predictions about features of the sixth Kondratieff wave in the light of the Cybernetic Revolution which, we think, started in the 1950s. We assume that the sixth K-wave in the 2030s and 2040s will merge with the final phase of the Cybernetic Revolution (which we call the phase of (...) self-regulating systems). This period will be characterized by breakthroughs in medical technologies which will manage to combine many other technologies into a single complex of MBNRIC-technologies (med-bio-nano-robo-info-cognitive technologies). The article offers some predictions concerning the development of these technologies. (shrink)

In his new work, Disappointment, Bruce Fleming starts from the realization that even objective views of the world are so only under specific circumstances. Subjects range from war and the nature of explanation systems such as science and astrology to a concept Fleming calls "coloring." When we identify coloring, it seems to us that a single quality of something larger has eclipsed all its other qualities—for example, skin color or sexual orientation coming to stand for the whole much more (...) complex individual. (shrink)

Michel Janssen and Harvey Brown have driven a prominent recent debate concerning the direction of an alleged arrow of explanation between Minkowski spacetime and Lorentz invariance of dynamical laws in special relativity. In this article, I critically assess this controversy with the aim of clarifying the explanatory foundations of the theory. First, I show that two assumptions shared by the parties—that the dispute is independent of issues concerning spacetime ontology, and that there is an urgent need for a constructive interpretation (...) of special relativity—are problematic and negatively affect the debate. Second, I argue that the whole discussion relies on a misleading conception of the link between Minkowski spacetime structure and Lorentz invari-ance, a misconception that in turn sheds more shadows than light on our understand-ing of the explanatory nature and power of Einstein’s theory. I state that the arrow connecting Lorentz invariance and Minkowski spacetime is not explanatory and uni-directional, but analytic and bidirectional, and that this analytic arrow grounds the chronogeometric explanations of physical phenomena that special relativity offers. (shrink)

The author offers his own vision of the unification of four fundamental interactions through a philosophical analysis of the categories of time and space. Time and space are coexisting self-sufficient phenomena. Time connects three global spaces (inert, living and intelligent substances) into a single hierarchy of the universe. The unification of space and time took place at the first stage of the modern world structure, during the formation of the first global space-time. The cosmological singularity was determined by two (...) main parameters: substance (state of matter) and the energy embedded in it. The author comes to the conclusion that strong, weak and electromagnetic interactions are forces that determine different spaces (geometric constructions). All geometric constructions of fundamental particles are determined by 3 forces (energies). Gravitational force is time, "time-energy", relative to which and "in which" geometric constructions take place. (shrink)

The main claim here is that Aquinas’s theory of natural law is false because it is incompatible with the occurrence of evolution by variation and natural selection. This contradicts the Thomist opinion that there is no conflict between the two. The conflict is deep and pervasive, involving the core elements of Aquinas’s theory. The problematic elements include: 1) the fundamental precept that good should be done and pursued, and evil avoided; 2) the claim that every organism aims at the good (...) and that it is wrong to frustrate nature; 3) the Aristotelian preconception that everything has a single preeminent end; 4) the putative natural inclinations attributed to human beings; 5) the assumption that species essentialism is true; and 6) the notion that God’s intentions are discernible in the natural world. It is concluded that the problems are so extensive that Aquinas’s theory is beyond rescue. (shrink)

The most recent attempt at factually establishing a "true" value for the one-way velocity of light is shown to be faulty. The proposal consists of two round-trip photons travelling first in vacuo and then through a medium of refractive index n before returning to their common point of origin. It is shown that this proposal, as well as a similar one considered by Salmon (1977), presupposes that the one-way velocities of light are equal to the round-trip value. Furthermore, (...) experiments of this type, involving regions of space with varying refractive indices, cannot "single out" any factual value for the Reichenbach-Grünbaum ε factor thus posing no threat to the conventionalist thesis. (shrink)

While it has often been proposed that, fundamentally, Lorentz-invariance is not respected in a quantum theory of gravity, it has been difficult to reconcile deviations from Lorentz-invariance with quantum field theory. The most commonly used mechanisms either break Lorentz-invariance explicitly or deform it at high energies. However, the former option is very tightly constrained by experiment already, the latter generically leads to problems with locality. We show here that there exists a third way to integrate deviations from Lorentz-invariance into quantum (...) field theory that circumvents the problems of the other approaches. The way this is achieved is an extension of the standard model in which photons can have different speeds without singling out a preferred restframe, but only as long as they are in a quantum superposition. Once a measurement has been made, observables are subject to the laws of special relativity, and the process of measurement introduces a preferred frame. The speed of light can take on different values, both superluminal and subluminal (with respect to the usual value of the speed of light), without the need for Lorentz-invariance violating operators and without tachyons. We briefly discuss the relation to deformations of special relativity and phenomenological consequences. (shrink)

The law of coherence helps us understand the physical force behind the increasing complexity of the evolutionary process, from quanta, to cells, to self-awareness and collective consciousness. The coherent electromagnetic field is the inner glue of every system, the "intelligent" energy-information communication that assures a cooperative and synergic behavior to all the components of the system, as a whole, allowing harmonious evolution and unity of consciousness. Neuropsychological experiments show that the different brain areas communicate with more or less coherence according (...) to different states of consciousness: high values are correlated with states of psychophysical integrity and well-being, whereas low values with states of conflict and depression. If we expand isomorphically these brain discoveries, we will have four main general states of coherence: from disgregation to unity, which represents an important element, in the General System Theory, to differentiate between inanimate and animate system, and to understand how billions cells become a single living organism, and then how billions of human beings could eventually generate planetary consciousness. In this light the resolution of the global ecosystem crisis implicates human transformation from a low to a highly coherent state of consciousness. The key to the entire process seems to be the coherent nature of consciousness. (shrink)

Among the dubious theses "proved" by the author of this classic example of pseudo-scientific literature are: relativistic physics is incorrect, the quantum theory is incorrect, "the success of quantum theory is purely mathematical," time, like space, has three dimensions, inductance and mass are equivalent, there is such a thing as absolute motion, and "All properties which are possessed by either space or time individually are.... properties of both space and time." What makes this book unusual is the fact that the (...) immense number of citations and footnotes refer to almost all of the important books and articles in the field of the philosophical foundations of physics. Larson therefore has accomplished one outstanding task: he has succeeded in immersing himself in some of the most philosophically and scientifically compelling literature of recent times and has emerged unscathed by a single intelligible idea.—H. P. K. (shrink)

Abstractabstract:In this essay, I engage in an exercise of interreligious theology focusing on Muslim and Shin Buddhist perceptions of Jesus. I ask if and how a Christian might take Muslim and Shin Buddhist views as genuine insights that may enrich and correct some Christian views. I further hold that lest getting incoherent such an exploration must keep all three perspectives together. It must combine the insight behind Christians' affirmation of incarnation with, on one hand, the insight behind Muslims' concern about (...) the concept of incarnation as such and, on the other hand, the insight behind the concern of Buddhists about the assertion of merely one single incarnation. By interpreting incarnation as an implication of revelation, I suggest that such a Christology is indeed possible. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Buddhist-Christian Studies 24.1 (2004) 278-283 [Access article in PDF] The Voice of God on Mount Sinai. Rabbinic Commentaries on Exodus 20:1 In Light of Sufi and Zen-Buddhist Texts. By Reinhard Neudecker. Rome: Pontificio Istituto Biblico, 2002. 157 pp. Reinhard Neudecker's study of the central event of the first five books of the Bible, namely the revelation of God on Mount Sinai to Moses and the Israelites, is an (...) important contribution to interfaith studies that should be of interest to both the scholar and layperson alike. The clarity of purpose and treatment makes this study very accessible; each chapter is thoughtfully structured, with rich footnotes that provide documentation, further explanation, and information. The appendixes contain the relevant rabbinic texts in the original Hebrew; indices of terms, subjects, and Bible citations; as well as a helpful list of consulted works.The stated purpose of the study is to shed light on enigmatic rabbinical interpretations of Exodus 20:1, the verse that introduces the TenWords (commandments) [End Page 278] that form the basis of the complete Torah by taking into consideration analogous passages from the Sufi and Zen Buddhist traditions. In explaining his methodology, the author makes three important distinctions. First, Neudecker is "not dealing with Judaism, Islam and Zen Buddhism as such, but with the views and experiences of some rabbinic Jews, some Sufi Muslims and some Zen Buddhists" (p. x). Second, the chosen texts are offered for their spiritual and mystical insight, not for their historical context or content, because "the mystic has learned to convert the great events recorded by tradition into symbols which express the ongoing inner revelation to which he has been exposed" (p. 6). Because spiritual and mystical writers generally refrain from explaining deep experiences openly (especially because of the impossibility of putting them into words), the author refrains from adding his own interpretations and instead invites the reader to a meditative encounter with the texts. Third, the author does not intend to offer simple parallels or to readily claim correspondences between the rabbinic, Sufi, and Zen texts, but leaves it up to the reader to judge what the "different traditions may have in common and to what degree and where one tradition may go a step further than the others (p. 11, n. 30). His main purpose, as stated above, is to understand the rabbinic comments better by using the method of "intercultural reading" in drawing upon Sufi and Zen Buddhist texts.After the introductory chapter, which offers the methodological considerations and basic information about the Rabbinic sources and Buddhist terminology, the author presents Exod. 20:1 in its rabbinic translation: "And God spoke all these words to say." This short verse has become the stumbling block for the rabbinic interpreter, just as much as a Zen koan becomes a stumbling block for the Zen student or an obscure verse in the Koran for the Sufi. What these stumbling blocks have in common is that they open up a new way of nondiscursive understanding of the text that leads to profound insights and a deep spiritual experience.Chapters 4-9 of the book are devoted to unraveling the mysteries of these insights. The reader is drawn into an engaging process that opens up layer upon layer of meaning, comparable to the peeling of an onion. A short exposition of the themes of each chapter as introduction to the texts proves very helpful for orientation in this process. Chapter 4 addresses the question of how the people at Sinai heard the Ten Words. The rabbis differ on whether the people heard all of the commandments or only the first two of them, but the important point of comparison is the enigmatic statement that God pronounced all the Ten Words, including the entire Torah, "in one single sound, as the (human) mouth cannot speak and the (human) ear cannot hear" (p. 35). This statement implies that God's revelation exceeds the limits of human speaking and hearing, and that God communicates in... (shrink)

This paper is a comparative study of two texts separated by a considerable temporal-spatial gap. The methodological approach is, as we would like to define it, a-philological. Five central concepts drawn from the Dàshèng qǐxìn lùn, traditionally associated with Aśvaghoṣa, Paramārtha, and Śikṣānanda, shall be examined against the related ideas found in Ratnākaraśānti’s Prajñāpāramitopadeśa. Our observations are the following: 1) The two dimensions of the single mind advocated in the QXL are doctrinally identical to the two forms of the (...) dependent nature in the PPU. 2) The intermingling mind which is taken as ālayavijñāna in the QXL, corresponds to the imagination of the unreal in the PPU. 3) The mutual perfuming of the real and the unreal is in essence the same as the false inseparability of clear light and image in the PPU. 4) The essence of perception and its synonyms used in the QXL, its commentarial literature and other related texts, find equivalents such as prakāśamānatā, prakāśātmatā, saṃvedyatā, buddhilakṣaṇa, in the PPU. 5) The concept of activated perception in the QXL sheds light on a puzzling word in the PPU, arvāk, which can be interpreted as the opposite of “suddenly” in the QXL. Our investigation reaffirms the philosophical value as well as the religious legitimacy of the QXL, and it underscores the significance of the late mādhyamika texts for Buddhist Studies. (shrink)

This study analyses a Christic vision perceived by a woman during a radiotherapy session for her cervical cancer. A detailed description of the vision is presented based on a photographic documentation of the radiotherapy room, a painting of the vision made by the visionary herself and narratives retold two weeks after the vision, and again, one year later. Perceptual, social, and psychodynamic psychological theories are used to analyze the psychological prerequisites of the vision. It is shown that the vision is, (...) in psychological terms, an illusion rather than a hallucination. Different possible origin mechanisms to the vision are discussed as well as why the vision is attributed to Jesus. The psychological function of the vision is analyzed with regard to the visionary’s religious behaviour and the role of this experience in coping with the cancer disease. It is argued that the visionary’s religious commitment is being strengthened and that the vision functions as a catalyst for previously-formed religious coping mechanisms. It also initiates at least one new kind of religious coping mechanism in the visionary’s coping system. A critical discussion of research methods concerning narratives of religious experiences is presented in the light of the results of the analyses undertaken in this paper where some problems with in-depth interviews conducted at one point in time are is highlighted. This kind of data collection appears more fragile when attempting to explain a phenomenon in terms of cause and events than when trying to understand a phenomenon. (shrink)

Big History provides a unique opportunity to consider the development of the Universe as a single process. Within Big History studies one can distinguish some common evolutionary laws and principles. However, it is very important to recognize that there are many more such integrating principles, laws, mechanisms and patterns of evolution at all its levels than it is usually supposed. In the meantime, we can find the common traits in development, functioning, and interaction of apparently rather different processes and (...) phenomena of Big History. Of special importance is the point that many principles, patterns, regularities, and rules of evolution, which we tend to find relevant only for the biological and social levels of evolution, may be also applied to the cosmic phase of evolution. The present article attempts (within such a framework for the first time in the Big History framework) at combining Big History potential with the potential of Evolutionary Studies. It does not only analyze the history of the Cosmos. It studies similarities between evolutionary laws, principles, and mechanisms at various levels and phases of Big History. Such an approach opens up some new perspectives for our understanding of evolution and Big History, their driving forces, vectors, and trends; it creates a consolidated field for interdisciplinary research. (shrink)