Background: In the present study, we aimed to better investigate attention system profile of Parkinson's disease-Mild Cognitive Impairment patients and to determine if specific attentional deficits are associated with 123I-FP-CIT SPECT.Methods: A total of 44 de novo drug-naïve PD patients [ with normal cognition and 17 with MCI ], 23 MCI patients and 23 individuals with subjective cognitive impairment were recruited at the Clinical Neurology Unit of Santa Chiara hospital. They were assessed by a wide neuropsychological battery, including Visual Search (...) Test measuring selective attention. Performances among groups were compared by non-parametric tests. Further, Spearman's rank correlations were performed to explore the association between neuropsychological variables and 123I-FP-CIT SPECT data in PD subgroup.Results: PD-MCI patients performed worse on VST than patients with PD-NC, patients with MCI and individuals with SCI. The performance of PD-MCI patients on VST significantly correlated with caudate nucleus 123I-FP-CIT SPECT uptake, whereas a negative correlation between such test and 123I-FP-CIT SPECT uptake in the left putamen was found in PD-NC patients.Conclusions: We suggest that selective attention deficit might be a trigger of cognitive decay in de novo PD-MCI patients. The VST should be routinely used to detect attentional deficits in hospital clinical practice, in the light of its closely association with dopamine depletion of basal ganglia in mildly impaired PD patients. (shrink)

The most majestic scientific achievement, of this century in mathematical beauty, axiomatic consistency, and experimental verifications has been special relativity with its unitary structure at the operator level, and canonical structure at the classical levels, which has turned out to be exactly valid for point particles moving in the homogenenous and isotropic vacuum (exterior dynamical problems). In recent decades a number of authors have studied nonunitary and noncanonical theories, here generally calleddeformations for the representation of broader conditions, such as extended (...) and deformable particles moving within inhomogeneous and anisotrophic physical media (interior dynamical problems). In this paper we show that nonunitary deformations, including, q-, k-, quatum-, Lie-isotopic, Lie-admissible, and other deformations, even thoughmathematically correct, have a number of problematic aspects ofphysical character when formulated on conventional spaces over conditional fields, such as lack of invariance of the basic space-time units, ambiguous applicability to measurements, loss of Hermiticity-observability in time, lack of invariant numerical predictions, loss of the axions of special relativity, and others. We then show that the classical noncanonical counterparts of the above nonunitary deformations are equally afflicted by corresponding problems of physical consistency. We also show that the contemporary formulation of gravity is afflicted by similar problematic aspects because Riemannian spaces are noncanonical deformations of Minkowskian spaces, thus having noninvariant space-time units. We then point out that new mathematical methods, calledisotopies, genotopies, hyperstructures and their isoduals, offer the possibilities of constructing a nonunitary theory, known asrelativistic hadronic mechanics which: (1) is as axiomatically consistent as relativistic quantum mechanics, (2) preserves the abstract axioms of special relativity, and (3) results in a completion of the conventional mechanics much along the celebrated Einstein-Podolski-Rosen argument. A number of novel applications are indicated, such as a geometric unification of the special and general relativity via the isominkowskian geometry in which the two relativities are differentiated via the invariant basic unit, while preserving conventional Riemannian metrics, Einstein's field equations, and related experimental verifications; a novel operator form of gravity verifying the axioms of relativistic quantum mechanics under the universal isopoincaré symmetry; a new structure model of hadrons with conventional massive particles as physical constituents which is compatile with composite quarks and with established unitary classifications; and other novels applications in nuclear physics, astrophysics, theoretical biology, and other fields. The paper ends with the proposal of a number of new experiments, some of which may imply new practical applications, such as conceivable new forms of recycling nuclear waste. The achievement of axiomatic consistency in the study of the above physical problems has been possible for the first time in this paper thanks to mathematical advances that recently appeared in a special issue of theRendiconti Circolo Matematico Palermo, and in other journals identified in the Acknowledgements. (shrink)

Razón, poesía, historia.--La cuestión del estoicismo español.--El querer.

Cognitive integration is a defining yet overlooked feature of our intellect that may nevertheless have substantial effects on the process of knowledge-acquisition. To bring those effects to the fore, I explore the topic of cognitive integration both from the perspective of virtue reliabilism within externalist epistemology and the perspective of extended cognition within externalist philosophy of mind and cognitive science. On the basis of this interdisciplinary focus, I argue that cognitive integration can provide a minimalist yet adequate epistemic norm of (...) subjective justification: so long as the agent’s belief-forming process has been integrated in his cognitive character, the agent can be justified in holding the resulting beliefs merely by lacking any doubts there was something wrong in the way he arrived at them. Moreover, since both externalist philosophy of mind and externalist epistemology treat the process of cognitive integration in the same way, we can claim that epistemic cognitive characters may extend beyond our organismic cognitive capacities to the artifacts we employ or even to other agents we interact with. This move is not only necessary for accounting for advanced cases of knowledge that is the product of the operation of epistemic artifacts or the interactive activity of research teams, but it can further lead to interesting ramifications both for social epistemology and philosophy of science. (shrink)

Strong epistemic anti-individualism—i.e., the claim that knowledge can be irreducibly social—is increasingly debated within mainstream and social epistemology. Most existing approaches attempt to argue for the view on the basis of aggregative analyses, which focus on the way certain groups aggregate the epistemic attitudes of their members. Such approaches are well motivated, given that many groups to which we often ascribe group knowledge—such as juries and committees—operate in this way. Yet another way that group knowledge can be generated is on (...) the basis of epistemic collaborations, such as scientific research teams and Transactive Memory Systems. To produce knowledge, epistemic collaborations rely heavily on the mutual interactions of their group members. This is a distinctive feature of epistemic collaborations that renders them resistant to aggregative analyses. To accommodate this kind of group knowledge, the paper combines virtue reliabilism with the hypothesis of distributed cognition in order to introduce the hybrid approach of distributed virtue reliabilism. On this view, beliefs produced by epistemic collaborations entertain positive epistemic standing in virtue of the mutual interactions of their group members; this positive epistemic standing is a collective property; epistemic collaborations qualify as epistemic group agents; collaborative knowledge is a special kind of group knowledge, motivating strong epistemic anti-individualism in a distinctive way. (shrink)

Strong epistemic anti-individualism—i.e., the claim that knowledge can be irreducibly social—is increasingly debated within mainstream and social epistemology. Most existing approaches attempt to argue for the view on the basis of aggregative analyses, which focus on the way certain groups aggregate the epistemic attitudes of their members. Such approaches are well motivated, given that many groups to which we often ascribe group knowledge—such as juries and committees—operate in this way. Yet another way that group knowledge can be generated is on (...) the basis of epistemic collaborations, such as scientific research teams and Transactive Memory Systems. To produce knowledge, epistemic collaborations rely heavily on the mutual interactions of their group members. This is a distinctive feature of epistemic collaborations that renders them resistant to aggregative analyses. To accommodate this kind of group knowledge, the paper combines virtue reliabilism with the hypothesis of distributed cognition in order to introduce the hybrid approach of distributed virtue reliabilism. On this view, beliefs produced by epistemic collaborations entertain positive epistemic standing in virtue of the mutual interactions of their group members; this positive epistemic standing is a collective property; epistemic collaborations qualify as epistemic group agents; collaborative knowledge is a special kind of group knowledge, motivating strong epistemic anti-individualism in a distinctive way. (shrink)

Dibujar el pensamiento de Seneca es dibujar su figura viva, trazar el esquema de su persona. Seneca es un mediador que para alzarse sobre nosotros necesita de nuestra necesidad, pues solo apoyado en nuestra indigencia tiene sentido. Maria Zambrano lleva a cabo un lucido estudio de la figura y significacion del pensador cordobes y presenta una seleccion de sus escritos.

Spectroscopy is a scientific topic at the interface between Chemistry and Physics, which is taught at high school level in relation with its fundamental applications in Analytical Chemistry. In the first part of the paper, the topic of spectroscopy is analyzed having in mind the well-known Johnstone’s triangle of chemistry education, putting in evidence the way spectroscopy is usually taught at the three levels of chemical knowledge: macroscopic/phenomenological, sub-microscopic/molecular and symbolic ones. Among these three levels, following Johnstone’s recommendations the macroscopic (...) one is the most useful for high school students who learn spectroscopy for the first time. Starting from these premises, in the second part of the paper, we propose a didactic sequence which is inspired by the historical evolution of spectroscopic instruments from the first spectroscopes invented by Gustav Kirchhoff and Robert Bunsen in 1860 to the UV–vis spectrophotometers which became common since the 1960s. The idea behind our research is to analyze the conceptual advancements through the history of spectroscopy and to identify the key episodes/experiments and spectroscopic instruments. For each of them, a didactic activity, typically an experiment, is then proposed underlining the relevant aspects from the chemistry education point of view. The present paper is the occasion to reflect on the potentialities of an historical approach combined with a laboratorial one, and to discuss the role of historical instruments and related technological improvements to teach spectroscopy. (shrink)

Hilary Putnam is one of the world’s leading philosophers. His highly original and often provocative ideas have set the agenda for a variety of debates in philosophy of science, philosophy of mind and philosophy of language. His now famous philosophical thought experiments, such as the ‘Twin earth’ and ‘the brains in the vat’ have become part of the established canon in philosophy and cognitive science. _Reading Putnam_ is an outstanding overview and assessment of Hilary Putnam’s work by a team of (...) international contributors, and includes replies by Putnam himself. Divided into clear sections, it contains chapters on key aspects of Putnam’s large body of writing, including: Scientific realism and the changes that Putnam’s thought has undergone on this topic analyticity and ontology, including the important interconnections between the views of Putnam and Quine Putnam’s arguments concerning externalist views of meaning and reference, questions of conceptual relativity, and his preoccupation with ethics through a denial of the fact–value dichotomy Putnam’s developing views on perception. Offering an excellent survey of Putnam’s work, _Reading Putnam_ is essential for those studying philosophy of mind, philosophy of language, and philosophy of science, as well as for anyone interested in contemporary philosophy. (shrink)

In the literature, the pragmatic dimension of metaphors has been clearly acknowledged. Metaphors are regarded as having different possible uses, especially pursuing persuasion. However, an analysis of the specific conversational purposes that they can be aimed at achieving in a dialogue and their adequacy thereto is still missing. In this chapter, we will address this issue focusing on the classical distinction between the explanatory and persuasive uses of metaphors, which is, however, complex to draw at an analytical level and often (...) blurred and controversial also from a theoretical point of view. Building on the analysis of explanation in different theories and fields of study, we show how it can be conceived as characterized by a cognitive and a pragmatic dimension, where the transference of understanding is used pragmatically for different dialogical goals - such as informing, making a joint decision, and most importantly persuading. In this sense, the cognitive effects of understanding are not incompatible with a persuasive dialogical purpose. This theoretical proposal will be applied to examples drawn from the medical context, to show how a pragmatic approach to explanation can account for the complexity of the cases that can be found in actual dialogical contexts. (shrink)

The ‘causal-constitution’ fallacy, the ‘cognitive bloat’ worry, and the persisting theoretical confusion about the fundamental difference between the hypotheses of embedded (HEMC) and extended (HEC) cognition are three interrelated worries, whose common point—and the problem they accentuate—is the lack of a principled criterion of constitution. Attempting to address the ‘causal-constitution’ fallacy, mathematically oriented philosophers of mind have previously suggested that the presence of non-linear relations between the inner and the outer contributions is sufficient for cognitive extension. The abstract idea of (...) non-linearity, however, can be easily misunderstood and has, in the past, led to incorrect and counterintuitive conclusions about what may count as part of one’s overall cognitive system. In order to prevent any further mistakes I revisit dynamical systems theory to study the nature of the continuous mutual interactions that give rise to the aforementioned non-linear relations. Moreover, focusing on these interactions will allow us to provide two distinct arguments in support of the ontological postulation of extended cognitive systems, as well as an objective criterion of constitution. Accordingly, I put forward a version of HEC that treats continuous mutual interactions (and the resultant non-linear relations) not just as sufficient but also as necessary for cognitive extension. Such a qualified version of HEC may exclude certain alleged cases of cognitive extension where the agent does not mutually interact with his artifacts (e.g., shopping lists and directory services), but it is immune both to the ‘causal-constitution’ fallacy and the ‘cognitive bloat’ worry, and it can be sharply distinguished from HEMC. (shrink)

Probability as understood today, namely as a quantitative notion expressible by means of a function ranging in the interval between 0–1, took shape in the mid-17th century, and presents both a mathematical and a philosophical aspect. Of these two sides, the second is by far the most controversial, and fuels a heated debate, still ongoing. After a short historical sketch of the birth and developments of probability, its major interpretations are outlined, by referring to the work of their most prominent (...) representatives. The final section addresses the question of whether any of such interpretations can presently be considered predominant, which is answered in the negative. (shrink)

It has been recently suggested that if the Extended Mind thesis is true, mental privacy might be under serious threat. In this paper, I look into the details of this claim and propose that one way of dealing with this emerging threat requires that data ontology be enriched with an additional kind of data—viz., mental data. I explore how mental data relates to both data and metadata and suggest that, arguably, and by contrast with these existing categories of informational content, (...) mental data should not be merely legally protected. Rather, if we value mental privacy as we know it, technological measures should be employed to ensure that one’s mental data are practically—not just legally—impossible for others to obtain. (shrink)

The aim of this paper is to demonstrate that the postulation of irreducible, distributed cognitive systems is necessary for the successful explanatory practice of cognitive science and sociology. Towards this end, and with an eye specifically on the phenomenon of distributed cognition, the debate over reductionism versus emergence is examined from the perspective of Dynamical Systems Theory. The motivation for this novel approach is threefold. Firstly, DST is particularly popular amongst cognitive scientists who work on modelling collective behaviors. Secondly, DST (...) can deliver two distinct arguments in support of the claim that the presence of mutual interactions between group members necessitates the postulation of the corresponding group entity. Thirdly, DST can also provide a succinct understanding of the way group entities exert downward causation on their individual members. The outcome is a naturalist account of the emergent, and thereby irreducible, nature of distributed cognitive systems that avoids the reductionists’ threat of epiphenomenalism, while being well in line with materialism. (shrink)

My aim in this paper is to investigate what epistemic role, if any, do appeals to representations play in cognitive neuroscience. I suggest that while at present they seem to play something in between a minimal and a substantive explanatory role, there is reason to believe that representations have a substantial contribution to the construction of neuroscientic explanations of cognitive phenomena.

: The coloniality of power is understood by Anibal Quijano as at the constituting crux of the global capitalist system of power. What is characteristic of global, Eurocentered, capitalist power is that it is organized around two axes that Quijano terms "the coloniality of power" and "modernity." The coloniality of power introduces the basic and universal social classification of the population of the planet in terms of the idea of race, a replacing of relations of superiority and inferiority established through (...) domination with naturalized understandings of inferiority and superiority. In this essay, Lugones introduces a systemic understanding of gender constituted by colonial/modernity in terms of multiple relations of power. This gender system has a light and a dark side that depict relations, and beings in relation as deeply different and thus as calling for very different patterns of violent abuse. Lugones argues that gender itself is a colonial introduction, a violent introduction consistently and contemporarily used to destroy peoples, cosmologies, and communities as the building ground of the "civilized" West. (shrink)

The place of social epistemology within contemporary philosophy, as well as its relation to other academic disciplines, is the topic of an ongoing debate. One camp within that debate holds that social epistemology should be pursued strictly from within the perspective of individualistic analytic epistemology. In contrast, a second camp holds that social epistemology is an interdisciplinary field that should be given priority over traditional analytic epistemology, with the specific aim of radically transforming the latter to fit the results and (...) methodology of the former. We are rather suspicious of this apparent tension, which we believe can be significantly mitigated by paying attention to certain recent advances within philosophy of mind and cognitive science. Accordingly, we attempt to explain how extended knowledge, the result of combining active externalism from contemporary philosophy of mind with contemporary epistemology, can offer an alternative conception of the future of social epistemology. (shrink)

Dal "disegno su sabbia" delle donne australiane alle terrecotte delle donne del Camerun, dai retablos peruviani agli altari vodou degli immigrati haitiani a New York, dalla "Casa del popolo" del regno di Bandjoun alle "vetrinette" italiane degli anni Sessanta, dai malanggan e dai manufatti annodati dell'Oceania alla topologia dei nodi, dai bologan del Mali alla "Potlatch Collection" rimpatriata nei nuovi musei indigeni del Canada, dalle maschere gelede degli Yoruba alla figura ubiqua e mediatica di Mami Wata, i saggi di questo (...) volume evidenziano le valenze operative dell'arte: sia nell'arena sociale e politica contemporanea, cui appartengono anche le "tradizioni", sia nel campo cognitivo e religioso. A lungo confinata ai soli territori esotici delle culture "primitive" e limitata da un'eccessiva dipendenza dalle categorie interpretative occidentali, la riflessione antropologica sull'arte e sull'estetica trova oggi un nuovo respiro teorico, e un nuovo fascino. (shrink)