Haartman's analysis of ecstatic experience in early Methodism is contextualized within a brief review of the history of the movement and the theological assertions that underlay these religious behaviors. Wesley emphasized individual, as opposed to institutional religion and affrmed inductive as contrasted with deductive theology. "Sanctification," Wesley's term for personality transformation, is seen as positive ego development rather than regressive splitting of the ego. Maslow's "peak experience" is affrmed as a valid model for analyzing ecstatic behaviors. Methodism no longer emphasizes (...) such forms of religious expression. (shrink)

This sequel to the widely read Zen and the Brain continues James Austin's explorations into the key interrelationships between Zen Buddhism and brain research. In Zen-Brain Reflections, Austin, a clinical neurologist, researcher, and Zen practitioner, examines the evolving psychological processes and brain changes associated with the path of long-range meditative training. Austin draws not only on the latest neuroscience research and new neuroimaging studies but also on Zen literature and his personal experience with alternate states of consciousness.Zen-Brain Reflections takes up (...) where the earlier book left off. It addresses such questions as: how do placebos and acupuncture change the brain? Can neuroimaging studies localize the sites where our notions of self arise? How can the latest brain imaging methods monitor meditators more effectively? How do long years of meditative training plus brief enlightened states produce pivotal transformations in the physiology of the brain? In many chapters testable hypotheses suggest ways to correlate normal brain functions and meditative training with the phenomena of extraordinary states of consciousness.After briefly introducing the topic of Zen and describing recent research into meditation, Austin reviews the latest studies on the amygdala, frontotemporal interactions, and paralimbic extensions of the limbic system. He then explores different states of consciousness, both the early superficial absorptions and the later, major "peak experiences." This discussion begins with the states called kensho and satori and includes a fresh analysis of their several different expressions of "oneness." He points beyond the still more advanced states toward that rare ongoing stage of enlightenment that is manifest as "sage wisdom."Finally, with reference to a delayed "moonlight" phase of kensho, Austin envisions novel links between migraines and metaphors, moonlight and mysticism. The Zen perspective on the self and consciousness is an ancient one. Readers will discover how relevant Zen is to the neurosciences, and how each field can illuminate the other. (shrink)

This sequel to the widely read Zen and the Brain continues James Austin's explorations into the key interrelationships between Zen Buddhism and brain research. In Zen-Brain Reflections, Austin, a clinical neurologist, researcher, and Zen practitioner, examines the evolving psychological processes and brain changes associated with the path of long-range meditative training. Austin draws not only on the latest neuroscience research and new neuroimaging studies but also on Zen literature and his personal experience with alternate states of consciousness.Zen-Brain Reflections takes up (...) where the earlier book left off. It addresses such questions as: how do placebos and acupuncture change the brain? Can neuroimaging studies localize the sites where our notions of self arise? How can the latest brain imaging methods monitor meditators more effectively? How do long years of meditative training plus brief enlightened states produce pivotal transformations in the physiology of the brain? In many chapters testable hypotheses suggest ways to correlate normal brain functions and meditative training with the phenomena of extraordinary states of consciousness.After briefly introducing the topic of Zen and describing recent research into meditation, Austin reviews the latest studies on the amygdala, frontotemporal interactions, and paralimbic extensions of the limbic system. He then explores different states of consciousness, both the early superficial absorptions and the later, major "peak experiences." This discussion begins with the states called kensho and satori and includes a fresh analysis of their several different expressions of "oneness." He points beyond the still more advanced states toward that rare ongoing stage of enlightenment that is manifest as "sage wisdom."Finally, with reference to a delayed "moonlight" phase of kensho, Austin envisions novel links between migraines and metaphors, moonlight and mysticism. The Zen perspective on the self and consciousness is an ancient one. Readers will discover how relevant Zen is to the neurosciences, and how each field can illuminate the other. (shrink)

The quantum mechanical measurement process is analyzed by means of an explicit generic model describing the interaction between object and measuring device. The solution of the Schrödinger equation for the whole system reflects the ‘collapse’ of the object wave function. A necessary condition is a sufficiently sharply peaked initial measurement device wave function, which is guaranteed in its classical limit. With this assumption, it is in particular proven that the off-diagonal elements of the object density matrix vanish. This study therefore (...) shows the reduction of the object state to be a consequence of Hamiltonian evolution of the total system. (shrink)

The distribution of organisms in morphologic space is clumpy. Cats are like felids, dogs are like canids and snails are (mostly) like gastropods. But cats are not like dogs and snails are not like clams. This clumpy distribution of morphology has long posed one of the greatest challenges to evolutionary biologists. Does it represent the extinction and disappearance of a oncecontinuous distribution of morphologies, clades perched on the summits of persistent selective peaks ala Sewell Wright, or a primary signature of (...) the evolutionary processes? And if the latter, what processes are responsible for generating it? Although often couched in discussions of the origin of higher taxa, such taxa are but proxies for this clumpy distribution, and ultimately the latter is the critical issue for macroevolution and for Stephen Jay Gould’s opus. Underneath all the controversies over whether species constitute individuals, whether speciation serves to divide intra-specific adaptation driven by natural selection from a set of inter- and supra-specific evolutionary processes, and over the impact of catastrophic mass extinctions on evolutionary trends, the fundamental issue is simply one of clumpiness (or, if you prefer, the inhomogeneous distribution of morphologies). Iurii Filipchenko, a Russian geneticist and the mentor of Theodosius Dobzhansky, introduced the term macroevolution in 1927 because he believed that the origin of the characters associated with higher taxa (those beyond the species level) required a different process of evolution. Filipchenko believed macroevolution was driven by cytoplasmic inheritance, but his general argument was consistent with other saltationists and macro-mutationists of the time, including the paleontologist Henry Fairfield Osborne and the geneticist Richard Goldschmidt. These evolutionary biologists shared the.. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:The Journal of Aesthetic Education 37.1 (2003) 77-89 [Access article in PDF] Engaging Nature Aesthetically Joseph H. Kupfer Acting in Nature For the most part, most of us appreciate nature as spectators. Some portion of a natural scene is viewed as if it were a painting or photograph. We look for the picturesque in experiencing the real thing because our aesthetic approach toward nature has been filtered through pictures (...) — a canyon's spacious contours, a spectacular waterfall, a weeping willow swaying and billowing in the breeze. And there is certainly nothing wrong with this approach. I like a splendid sunset or majestic peak as much as the next person. However, thinking of nature solely or chiefly as an aesthetic scene to be observed is unnecessarily limiting. Regarding natural phenomena as material for detached, pictorial observation overlooks the aesthetic features revealed only through our active intercourse with nature.In what follows, I outline an active aesthetic of nature appreciation in particular, a series of physical responses to nature which yield a spectrum of aesthetic possibilities. Our active relationship toward nature is expressible by the relevant prepositions, as action can be in or into nature, against or with nature. Of course there will be overlap among these modes of dealing with nature aesthetically, but they are nevertheless fairly distinct and distinguishable. Moreover, the types of activity are arranged so that each succeeding way of addressing nature encompasses the aesthetic virtues of the preceding types of activity. As we move from acting in nature to acting with nature, therefore, our aesthetic experience becomes richer and more inclusive. 1The first active departure from the role of mere observer is found in acting in nature. When we act in or within nature, natural phenomena are the medium of our movement. Whether, hiking up the valley or swimming in the lake, we participate in the natural environment. And that participation [End Page 77] uncovers aesthetic features of nature not available to the mere spectator or observer. Walking through the valley, the prospect of wildflowers shifts from a distant, cascading carpet to a direct encounter with individual shapes, colors, fragrances, and textures. Our aesthetic experience includes appreciation of the shift in perspective itself, from long-range floral vista to more intimate perception.When we swim in the lake, it is no longer simply a thing viewed — a shifting montage of patterns of light playing on its surface. Instead, the lake is experienced as a translucent medium which alternately resists and yields to our arm, leg, and torso movement. Immersed in the water, we feel warm and cool patches, and hear sounds muffled and transmuted by the lake. The sound of our breathing is also modified by the watery medium, as well as by our physical labors.Acting in nature provides two aesthetic opportunities absent from mere spectating. First, the fact that we are active in the natural environment brings home a sense of ourselves as causal agents. Instead of change merely taking place in the natural environment, we are directly bringing about the change. Because we walk through the valley or swim in the lake, otherwise unavailable sensory experiences are enjoyed. Our movement, moreover, enables these experiences to develop from one moment to the next, at best, in an integrated sequence. In addition, there are the specific aesthetic features created for us by our physical activity — our bodily involvement beyond the more typical visual panorama. For example, tension and relaxation in our muscles, the feel and sound of our breathing and heartbeat correspond to change in our natural surroundings. Our bodies furnish us with responses to the natural environment because we are moving in it, not simply observing it.A more homey example of acting in nature is the case of standing or climbing "inside" a tree. Most of us enjoy the aesthetic experience of walking in the woods, among clusters of trees and other wildlife. But the individual tree also offers an opportunity for acting in or within nature. Enclosed within its branches and leaves, whether on the ground or alight a limb, we gain a new aesthetic perspective. The... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:The Journal of Aesthetic Education 37.1 (2003) 77-89 [Access article in PDF] Engaging Nature Aesthetically Joseph H. Kupfer Acting in Nature For the most part, most of us appreciate nature as spectators. Some portion of a natural scene is viewed as if it were a painting or photograph. We look for the picturesque in experiencing the real thing because our aesthetic approach toward nature has been filtered through pictures (...) — a canyon's spacious contours, a spectacular waterfall, a weeping willow swaying and billowing in the breeze. And there is certainly nothing wrong with this approach. I like a splendid sunset or majestic peak as much as the next person. However, thinking of nature solely or chiefly as an aesthetic scene to be observed is unnecessarily limiting. Regarding natural phenomena as material for detached, pictorial observation overlooks the aesthetic features revealed only through our active intercourse with nature.In what follows, I outline an active aesthetic of nature appreciation in particular, a series of physical responses to nature which yield a spectrum of aesthetic possibilities. Our active relationship toward nature is expressible by the relevant prepositions, as action can be in or into nature, against or with nature. Of course there will be overlap among these modes of dealing with nature aesthetically, but they are nevertheless fairly distinct and distinguishable. Moreover, the types of activity are arranged so that each succeeding way of addressing nature encompasses the aesthetic virtues of the preceding types of activity. As we move from acting in nature to acting with nature, therefore, our aesthetic experience becomes richer and more inclusive. 1The first active departure from the role of mere observer is found in acting in nature. When we act in or within nature, natural phenomena are the medium of our movement. Whether, hiking up the valley or swimming in the lake, we participate in the natural environment. And that participation [End Page 77] uncovers aesthetic features of nature not available to the mere spectator or observer. Walking through the valley, the prospect of wildflowers shifts from a distant, cascading carpet to a direct encounter with individual shapes, colors, fragrances, and textures. Our aesthetic experience includes appreciation of the shift in perspective itself, from long-range floral vista to more intimate perception.When we swim in the lake, it is no longer simply a thing viewed — a shifting montage of patterns of light playing on its surface. Instead, the lake is experienced as a translucent medium which alternately resists and yields to our arm, leg, and torso movement. Immersed in the water, we feel warm and cool patches, and hear sounds muffled and transmuted by the lake. The sound of our breathing is also modified by the watery medium, as well as by our physical labors.Acting in nature provides two aesthetic opportunities absent from mere spectating. First, the fact that we are active in the natural environment brings home a sense of ourselves as causal agents. Instead of change merely taking place in the natural environment, we are directly bringing about the change. Because we walk through the valley or swim in the lake, otherwise unavailable sensory experiences are enjoyed. Our movement, moreover, enables these experiences to develop from one moment to the next, at best, in an integrated sequence. In addition, there are the specific aesthetic features created for us by our physical activity — our bodily involvement beyond the more typical visual panorama. For example, tension and relaxation in our muscles, the feel and sound of our breathing and heartbeat correspond to change in our natural surroundings. Our bodies furnish us with responses to the natural environment because we are moving in it, not simply observing it.A more homey example of acting in nature is the case of standing or climbing "inside" a tree. Most of us enjoy the aesthetic experience of walking in the woods, among clusters of trees and other wildlife. But the individual tree also offers an opportunity for acting in or within nature. Enclosed within its branches and leaves, whether on the ground or alight a limb, we gain a new aesthetic perspective. The... (shrink)

Little is known about distance processing in patients with posterior brain damage. Although many investigators have claimed that distance estimates are normal or abnormal in some of these patients, many of these observations were made informally and the examiners often asked for relative, and not absolute, distance estimates. The present investigation served two purposes. First, we wanted to contrast the use of distance information in peripersonal space for perceptual report as opposed to visuomotor control in our visual form agnosic patient, (...) DF. Second, we wanted to see to what extent her abilities to process distance cues were dependent on binocular vision, in light of Milner et al.'s (1991) observations of preserved stereopsis in DF, and Dijkerman et al.'s (1996) and Marotta et al.'s (1997) observations that her visual guidance of grasping may be particularly dependent on binocular vision of the target. We hypothesized that DF's visuomotor responses would show normal sensitivity to target distance, while her perceptual estimates would not. In the first experiment, we required DF and two age- and sex-matched control subjects to reach out and grasp black cubes placed at varying distances, or to estimate the distance of the cubes from the hand starting position without making a reaching movement. In the second experiment, we required DF and two age-matched control subjects to point as rapidly and accurately as possible to small LED targets which differed in spatial location, under binocular and monocular conditions. The results showed that, relative to the control subjects, DF's grasping movements produced normal peak velocity-distance scaling-when she reached for blocks which varied in depth or pointed to LED targets which were presented at different distances in depth. In contrast, in the cube experiment, her verbal estimates of object distance were poorly scaled, although they improved slightly under the binocular conditions. The results are discussed in terms of current theories of processing streams in extrastriate visual cortex and the distinction between categorical and coordinate spatial processing. (shrink)

In the current study, we examine the changes in disclosure practices on compliance and the fight against corruption at Siemens AG, a large German multinational corporation, over the period 2000–2011 during which a major corruption scandal was revealed. More specifically, we conduct a content analysis of the company’s annual reports and sustainability reports during that period to investigate the changes of Siemens’ corruption and compliance disclosure using both quantitative and qualitative methods. Through the lens of legitimacy theory, stakeholder analysis, and (...) organizational façades, we find evidence that Siemens changed its compliance and corruption disclosure practices to repair its legitimacy in the wake of the 2006 corruption scandal. We analyze these strategies more closely by using the rational, progressive, and reputation façades framework. Our primary findings suggest that the annual reports show peaks of disclosure amounts on corruption and compliance disclosures earlier than sustainability reports, which can be partly explained by analyzing the disclosures made about—and to—the different stakeholder groups. We find that the annual report focuses more on internal stakeholders such as employees, while the sustainability report focuses more on external stakeholders such as suppliers. We also find that the company uses the façades differently depending on which report is being analyzed. (shrink)

In accordance with Leo Strauss’s ingenious suggestion, the Athenian Stranger of Plato’s Laws is best understood as an alternative ‘Socrates’, fleeing from the hemlock to Crete. Situated between Crito and Phaedo, Laws effectively tests the reader’s loyalty to the real Socrates who obeys Athenian law and dies cheerfully in Athens. Having separated Plato from the Stranger, a nuanced defence of Karl Popper’s suspicions about Laws confronts the apologetic readings of both Strauss and Christopher Bobonich. As hinted by his preference for (...) wine, the antidote for hemlock, the Athenian Stranger repeatedly proves himself the opposite of Socrates, particularly with respect to piety. Once the Stranger is recognized as ‘an unreliable narrator’, this apparently ponderous product of Plato’s senility becomes the taut thriller of an innovative teacher at the peak of his powers. (shrink)

Motor training to improve walking and balance function is a common aspect of rehabilitation following motor-incomplete spinal cord injury. Evidence suggests that moderate- to high-intensity exercise facilitates neuroplastic mechanisms that support motor skill acquisition and learning. Furthermore, enhancing corticospinal drive via transcranial direct current stimulation may augment the effects of motor training. In this pilot study, we investigated whether a brief moderate-intensity locomotor-related motor skill training circuit, with and without tDCS, improved walking and balance outcomes in persons with MISCI. In (...) addition, we examined potential differences between within-day and between-day effects of MST. Twenty-six adults with chronic MISCI, who had some walking ability, were enrolled in a 5-day double-blind, randomized study with a 3-day intervention period. Participants were assigned to an intensive locomotor MST circuit and concurrent application of either sham tDCS or active tDCS. The primary outcome was overground walking speed measured during the 10-meter walk test. Secondary outcomes included spatiotemporal gait characteristics, peak trailing limb angle, intralimb coordination, the Berg Balance Scale, and the Falls Efficacy Scale-International questionnaire. Analyses revealed a significant effect of the MST circuit, with improvements in walking speed, cadence, bilateral stride length, stronger limb TLA, weaker limb ACC, BBS, and FES-I observed in both the MST+tDCSsham and MST+tDCS groups. No differences in outcomes were observed between groups. Between-day change accounted for a greater percentage of the overall change in walking outcomes. In persons with MISCI, brief intensive MST involving a circuit of ballistic, cyclic locomotor-related skill activities improved walking outcomes, and selected strength and balance outcomes; however, concurrent application of tDCS did not further enhance the effects of MST.Clinical Trial Registration[ClinicalTrials.gov], identifier [NCT03237234]. (shrink)

The purpose of this article is to investigate wind turbine production, the variability of that production, and the relationship between output and system-wide demand. A review of the literature reveals that a variety of measures (and methods) to explore the variability of wind power production exist. Attention then turns to the province of Ontario (Canada), and the performances of four wind farms are examined for 2006 and 2007. Key conclusions include that the wind farms' capacity factors vary from 27.6% to (...) 35.6%, with higher values in winter as compared to summer; wind power performs better than the seasonal average during peak periods; wind is a better “partner” for the Ontario electricity system in the winter as opposed to the summer; and the increased geographic distribution of wind farms decreases their collective variability. (shrink)

In accordance with Leo Strauss's ingenious suggestion, the Athenian Stranger of Plato's Laws is best understood as an alternative 'Socrates', fleeing from the hemlock to Crete. Situated between Crito and Phaedo, Laws effectively tests the reader's loyalty to the real Socrates who obeys Athenian law and dies cheerfully in Athens. Having separated Plato from the Stranger, a nuanced defence of Karl Popper's suspicions about Laws confronts the apologetic readings of both Strauss and Christopher Bobonich. As hinted by his preference for (...) wine, the antidote for hemlock, the Athenian Stranger repeatedly proves himself the opposite of Socrates, particularly with respect to piety. Once the Stranger is recognized as 'an unreliable narrator', this apparently ponderous product of Plato's senility becomes the taut thriller of an innovative teacher at the peak of his powers. (shrink)

Lateral temporal measures of the auditory evoked potential including the T-complex, as well as an earlier negative peak index maturation of auditory/speech processing. Previous studies have shown that these measures distinguish neural processing in children with typical language development from those with disorders and monolingual from bilingual children. In this study, bilingual children with Turkish as L1 and German as L2 were compared with monolingual German-speaking children with developmental language disorder and monolingual German-speaking children with TD in order to disentangle (...) effects of limited language input vs. reduced perceptual abilities in the processing of speech and non-speech stimuli. Sensory processing reflected by the T-complex was compared in response to a German vowel and a sine-wave tone in the three groups of children, ages 5 through 6 years. Stimuli were presented while children watched a muted video. Auditory evoked potentials were time-locked to the vowels and tones. AEPs to the frequent stimuli within an oddball paradigm were analyzed at the left and right temporal electrode sites.The results revealed language status, stimulus, and language test measures all influenced the T-complex amplitudes. Particularly, the peak amplitude of Ta was modulated by language status and stimulus type. Bilingual children had significantly more negative Ta responses than the monolingual children with TD for both vowels and tones while DLD children differed from TD children only for the vowel stimulus. The amplitude of the T-complex was overall more negative at the left than at the right site. The Na peak latency was longer for the bilingual group than that observed for the two monolingual groups. The Tb latency was shorter for DLD and bilingual groups than that for TD children in the vowel condition, but no such latency difference between DLD and bilingual children was found. We suggest that the attenuated T-complex for bilingual children indicates continued plasticity of the auditory cortex to allow for learning of novel, second-language speech sounds. (shrink)

The literature on the impact of urban form design on travel behavior reveals mixed results. Instead of interpreting this finding as an insufficient basis for warranting action, this article suggests that a precautionary approach be introduced. This approach should be based on two interdependent modes of knowing and doing to establish and evolve design exemplars in conjunction with discipline-based analytical exemplars. Even if trends, including the digitization of human life and society, peak oil and climate change turn out to have (...) smaller negative effects than is currently anticipated, we will be ahead with more livable and sustainable urban forms. (shrink)

This paper presents a theory of algorithms designed to optimize highly interactive systems (multi-diminsional, multi-peak, nonlinear functions). Two applications are discussed: one concerns cognitive systems capable of learning and generalization, and one concerns calculations dealing with the "origin of life" from "organic soups". The algorithms are intrinsically parallel--each function argument processed serves as a carrier for information about a tremendous number of regions (hyperplanes) in the function's domain. Each region is automatically ranked according to the estimated average value of the (...) function over that region, and the rankings are compactly stored in the algorithm's data base (M l-tuples store approximately M-2 l/2 rankings). Thus, the algorithm implicitly processes hyperplanes by manipulating function arguments. (shrink)

Future population growth is uncertain and matters for climate policy: higher growth entails more emissions and means more people will be vulnerable to climate-related impacts. We show that how future population is valued importantly determines mitigation decisions. Using the Dynamic Integrated Climate-Economy model, we explore two approaches to valuing population: a discounted version of total utilitarianism (TU), which considers total wellbeing and is standard in social cost of carbon dioxide (SCC) models, and of average utilitarianism (AU), which ignores population size (...) and sums only each time period’s discounted average wellbeing. Under both approaches, as population increases the SCC increases, but optimal peak temperature decreases. The effect is larger under TU, because it responds to the fact that a larger population means climate change hurts more people: for example, in 2025, assuming the United Nations (UN)-high rather than UN-low population scenario entails an increase in the SCC of 85% under TU vs. 5% under AU. The difference in the SCC between the two population scenarios under TU is comparable to commonly debated decisions regarding time discounting. Additionally, we estimate the avoided mitigation costs implied by plausible reductions in population growth, finding that large near-term savings ($billions annually) occur under TU; savings under AU emerge in the more distant future. These savings are larger than spending shortfalls for human development policies that may lower fertility. Finally, we show that whether lowering population growth entails overall improvements in wellbeing—rather than merely cost savings—again depends on the ethical approach to valuing population. (shrink)

Søren Kierkegaard published an extraordinary number of works during his lifetime, but he left behind nearly as much unpublished writing, most of which consists of what are called his "journals and notebooks." Volume 2 of this 11-volume edition of Kierkegaard's Journals and Notebooks includes materials from 1836 to 1846, a period that takes Kierkegaard from his student days to the peak of his activity as an author. In addition to containing hundreds of Kierkegaard's reflections on philosophy, theology, literature, and his (...) own personal life, these journals are the seedbed of many ideas and passages that later surfaced in Either/Or, Repetition, Fear and Trembling, Philosophical Fragments, The Concept of Anxiety, Stages on Life's Way, Concluding Unscientific Postscript, and a number of Edifying Discourses. (shrink)

Leg rigidity is associated with frequent falls in people with Parkinson’s disease, suggesting a potential role in functional balance and gait impairments. Changes in the neural state due to secondary tasks, e.g., activation maneuvers, can exacerbate rigidity, possibly increasing the risk of falls. However, the subjective interpretation and coarse classification of the standard clinical rigidity scale has prohibited the systematic, objective assessment of resting and activated leg rigidity. The pendulum test is an objective diagnostic method that we hypothesized would be (...) sensitive enough to characterize resting and activated leg rigidity. We recorded kinematic data and electromyographic signals from rectus femoris and biceps femoris during the pendulum test in 15 individuals with PD, spanning a range of leg rigidity severity. From the recorded data of leg swing kinematics, we measured biomechanical outcomes including first swing excursion, first extension peak, number and duration of the oscillations, resting angle, relaxation index, maximum and minimum angular velocity. We examined associations between biomechanical outcomes and clinical leg rigidity score. We evaluated the effect of increasing rigidity through activation maneuvers on biomechanical outcomes. Finally, we assessed whether either biomechanical outcomes or changes in outcomes with activation were associated with a fall history. Our results suggest that the biomechanical assessment of the pendulum test can objectively quantify parkinsonian leg rigidity. We found that the presence of high rigidity during clinical exam significantly impacted biomechanical outcomes, i.e., first extension peak, number of oscillations, relaxation index, and maximum angular velocity. No differences in the effect of activation maneuvers between groups with clinically assessed low rigidity were observed, suggesting that activated rigidity may be independent of resting rigidity and should be scored as independent variables. Moreover, we found that fall history was more common among people whose rigidity was increased with a secondary task, as measured by biomechanical outcomes. We conclude that different mechanisms contributing to resting and activated rigidity may play an important yet unexplored functional role in balance impairments. The pendulum test may contribute to a better understanding of fundamental mechanisms underlying motor symptoms in PD, evaluating the efficacy of treatments, and predicting the risk of falls. (shrink)

This study investigated the differences between past and future temporal discounting in terms of neural activity in relation to temporal distance. Results show that brain regions are engaged differently in past and future temporal discounting. This is likely because past temporal discounting requires memory reconstruction, whereas future temporal discounting requires the processing of uncertainty about the future. In past temporal discounting, neural activity differed only when preferences were made between rewards received one hour prior and rewards received further in the (...) past. The peak amplitudes of P2 and P3 varied as the temporal distance increased from 2 weeks to 50 years. In future temporal discounting, neural activity differed only when preferences were evaluated between two delayed rewards. The delay conditions and had a significant influence on P2 and N2. Findings indicate the existence of different decision-making systems operating in past and future temporal discounting. (shrink)

Seasonal outbreaks have several different periods that occur primarily during winter in temperate regions, while influenza may occur throughout the year in tropical regions, triggering outbreaks more irregularly. Similarly, dengue occurs in the star of the rainy season in early May and reaches its peak in late June. Dengue and flu brought an impact on various countries in the years 2017–2019 and streaming Twitter data reveals the status of dengue and flu outbreaks in the most affected regions. This research work (...) presents that Social Media Analysis can be used as a detector of the epidemic outbreak and to understand the sentiment of social media users regarding various diseases. Providing awareness about seasonal outbreaks through SMA is an effective approach for researchers and healthcare responders to detect the early outbreaks. The proposed model aims to find the sentiment about the disease in tweets, and the seasonal outbreaks-related tweets are classified into two classes as disease positive and disease negative. This work proposes a machine-learning-based approach to detect dengue and flu outbreaks in social media platform Twitter, using four machine learning algorithms: Random Forest, K-Nearest Neighbor, Support Vector Machine, and Decision Tree, with the help of Term Frequency and Inverse Document Frequency. For experimental analysis, two datasets are analyzed individually. The experimental results show that the RF classifier has outperformed the comparison models in terms of improved accuracy, precision, recall, F1-measure, and Receiver Operating Characteristic curve. The proposed work offers favorable performance with total precision, accuracy, recall, and F1-measure ranging from 84% to 88% for conventional machine learning techniques. (shrink)

Background: In prior reports, we described the design and initial performance of a fully implantable, bi-directional neural interface system for use in deep brain and other neurostimulation applications. Here we provide an update on the chronic, long-term neural sensing performance of the system using traditional 4-contact leads and extend those results to include directional 8-contact leads.Methods: Seven ovine subjects were implanted with deep brain stimulation leads at different nodes within the Circuit of Papez: four with unilateral leads in the anterior (...) nucleus of the thalamus and hippocampus; two with bilateral fornix leads, and one with bilateral hippocampal leads. The leads were connected to either an Activa PC+S® or Percept PC°ledR deep brain stimulation and recording device. Spontaneous local field potentials, evoked potentials, LFP response to stimulation, and electrode impedances were monitored chronically for periods of up to five years in these subjects.Results: The morphology, amplitude, and latencies of chronic hippocampal EPs evoked by thalamic stimulation remained stable over the duration of the study. Similarly, LFPs showed consistent spectral peaks with expected variation in absolute magnitude dependent upon behavioral state and other factors, but no systematic degradation of signal quality over time. Electrode impedances remained within expected ranges with little variation following an initial stabilization period. Coupled neural activity between the two nodes within the Papez circuit could be observed in synchronized recordings up to 5 years post-implant. The magnitude of passive LFP power recorded from directional electrode segments was indicative of the contacts that produced the greatest stimulation-induced changes in LFP power within the Papez network.Conclusion: The implanted device performed as designed, providing the ability to chronically stimulate and record neural activity within this network for up to 5 years of follow-up. (shrink)

IntroductionExercise at high intensity may cause lower affective responses toward exercise compared with moderate intensity exercise. We aimed to elucidate affective valence and enjoyment in high- and moderate-high interval exercise.MethodsTwenty recreationally active participants underwent three different treadmill running exercise sessions per week over a 3-week period, in randomized order; CE70: 45 min continuous exercise at 70% of heart rate maximum, INT80: 4 × 4 min intervals at 80% of HRmax, INT90: 4 × 4 min intervals at 90% of HRmax. Pre-tests (...) included graded submaximal steady state intensities and a test to exhaustion for determining peak oxygen uptake and HRmax. Affective valence was measured before, during and after the sessions using the Feeling Scale. Enjoyment was assessed before and after the sessions applying the Physical Activity Enjoyment Scale and during the sessions using the Exercise Enjoyment Scale.ResultsThe participants felt lower pleasure during INT90 sessions compared with INT80 and CE70 sessions, with no differences between INT80 and CE70 sessions. There were higher enjoyment after INT80 sessions versus CE70 sessions, and no differences between INT90 and CE70 or INT80. For enjoyment during exercise, CE70 were perceived more enjoyable, and INT80 and INT90 less enjoyable in week 2 and 3 than in week 1.ConclusionThe negative affective consequences associated with high intensity interval exercise can be alleviated by keeping the intensity at or around 80% of HRmax while preserving the beneficial enjoyment responses associated with interval exercise. (shrink)

Carbon monoxide intoxication leads to acute and chronic neurological deficits, but little is known about the specific noxious mechanisms. 1 H magnetic resonance spectroscopy may allow insight into the pathophysiology of CO poisoning by monitoring neurochemical disturbances, yet only limited information is available to date on the use of this protocol in determining the neurological effects of CO poisoning. To further examine the short-term and long-term effects of CO on the central nervous system, we have studied seven patients with CO (...) poisoning assessed by gray and white matter MRS, magnetic resonance imaging and neuropsychological testing. Five patients suffered from acute high-dose CO intoxication and were in coma for 1–6 days. In these patients, MRI revealed hyperintensities of the white matter and globus pallidus and also showed increased choline and decreased N -acetyl aspartate ratios to creatine, predominantly in the white matter. Lactate peaks were detected in two patients during the early phase of high-dose CO poisoning. Two patients with chronic low-dose CO exposure and without loss of consciousness had normal MRI and MRS scans. On follow-up. five of our seven patients had long-lasting intellectual impairment, including one individual with low-dose CO exposure. The MRS results showed persisting biochemical alterations despite the MRI scan showing normalization of morphological changes. In conclusion, the MRS was normal in patients suffering from chronic low-dose CO exposure; in contrast, patients with high-dose exposure showed abnormal gray and white matter levels of NAA/Cr, Cho/Cr and lactate, as detected by 1 H MRS, suggesting disturbances of neuronal function, membrane metabolism and anaerobic energy metabolism, respectively. Early increases in Cho/Cr and decreases of NAA/Cr may be related to a poor long-term outcome, but confirmation by future studies is needed. (shrink)

Previous processing studies have shown that constituents that are prosodically marked as focus lead to an activation of alternatives. We investigate the processing of constituents that are prosodically marked as contrastive topics. In German, contrastive topics are prosodically realized by prenuclear L*+H accents. Our study tests a) whether prenuclear accents (as opposed to nuclear accents) are able to activate contrastive alternatives, b) whether they do this in the same way as constituents prosodically marked as focus with nuclear accents do, which (...) is important for semantic modeling and c) whether the activation of alternatives is caused by pitch accent type (prenuclear L*+H as contrastive accent vs. prenuclear L+H* as non-contrastive accent) or by differences in F0-excursion (related to prominence). We conducted two visual-world eye-tracking studies, in which German listeners heard declarative utterances (e.g., The swimmer wanted to put on flappers) and watched displays that depicted four printed words: one that was a contrastive alternative to the subject noun (e.g., diver), one that was non-contrastively related to it (e.g., sports), the object (e.g., flappers), which had to be clicked, and an unrelated distractor. Experiment 1 presented participants with two naturally produced intonation conditions, a broad focus control condition with a prenuclear L+H* accent on the subject and a contrastive topic condition with a prenuclear L*+H accent. The results showed that participants fixated more on the contrastive alternative when the subject was produced with an L*+H accent, with the same effect size and timing as reported for focus constituents. Experiment 2 resynthesized the stimuli so that peak height and F0-excursion were the same across intonation conditions. The effect was the same, but the time course was slightly later. Our results suggest that prenuclear L*+H immediately leads to the activation of alternatives during online processing, and that the F0-excursion of the accent lends little. The results are discussed with regard to the processing of contrastive focus accents and theories of contrastive topic. (shrink)

The output from motor neuron pools is influenced by the integration of synaptic inputs originating from descending corticomotor and spinal reflex pathways. In this study, using paired non-invasive brain and peripheral nerve stimulation, we investigated how descending corticomotor pathways influence the physiologic recruitment order of the soleus Hoffmann reflex. Eleven neurologically unimpaired adults completed an assessment of transcranial magnetic stimulation -conditioning of the soleus H-reflex over a range of peripheral nerve stimulation intensities. Unconditioned H-reflex recruitment curves were obtained by delivering (...) PNS pulses to the posterior tibial nerve. Subsequently, TMS-conditioned H-reflex recruitment curves were obtained by pairing PNS with subthreshold TMS at short and long intervals. We evaluated unconditioned and TMS-conditioned H-reflex amplitudes along the ascending limb, peak, and descending limb of the H-reflex recruitment curve. Our results revealed that, for long-interval facilitation, TMS-conditioned H-reflex amplitudes were significantly larger than unconditioned H-reflex amplitudes along the ascending limb and peak of the H-reflex recruitment curve. Additionally, significantly lower PNS intensities were needed to elicit peak H-reflex amplitude for long-interval facilitation compared to unconditioned. These findings suggest that the influence of descending corticomotor pathways, particularly those mediating long-interval facilitation, contribute to changing the recruitment gain of the motor neuron pool, and can inform future methodological protocols for TMS-conditioning of H-reflexes. By characterizing and inducing short-term plasticity in circuitry mediating short- and long-interval TMS-conditioning of H-reflex amplitudes, future studies can investigate supraspinal and spinal circuit contributions to abnormal motor control, as well as develop novel therapeutic targets for neuromodulation. (shrink)

An English language translation accompanies the original Greek text of Aristotle's book about the nature of the state, constitutions, revolutions, democracy, and oligarchy.

In lieu of an abstract, here is a brief excerpt of the content:Darwin Meets Literary TheoryEllen DissanayakeEvolution and Literary Theory, by Joseph Carroll; xi & 518 pp. Columbia: University of Missouri Press, 1995, $44.95.In my experience, most literary theorists, even those who participate in conferences called “Literature and Science,” know little about evolution, and don’t want to know. For them, “science” means information theory, chaos or catastrophe theory, fractals, pataphysics, “autopoeisis” or self-organization, emergence, cyborgs, hypertext, virtual signs and other aspects (...) of sci-fi, or techno-politics. (I encountered these subjects at a comparative literature conference I attended in March 1995.) These “scientific” positions are used as trendy metaphors for talking about chance, uncertainty, accident, ideology, and multidimensionality in literary works or in the aims of their authors. In other words, the buzzwords of contemporary science become one more angle from which to view or project another facet onto the glassy, self-reflective edifice of contemporary literary theory, rather than a means from which to shatter it and build again from scratch with more earthy, substantial materials. Joseph Carroll’s book provides the view and the means for this genuinely new and constructive (if initially destructive) possibility.It is ironic that in the present critical climate the very virtues of the book might be seen by some as faults—e.g., the lucid, elegant writing and the erudition and interdisciplinarity of the work as a whole. Carroll [End Page 229] writes clearly, authoritatively, without jargon, and with frequent, delicious wit. His values, aims, explanations, evidence, and criticisms are concisely and plainly stated. This is in marked contrast to the enigmatic and idiosyncratic nature of much recent criticism, and might have the initially disorienting effect of returning to earth and breathing pure oxygen after one has become accustomed to the thin and rarefied atmosphere of remote, icy peaks.Carroll offers wide-ranging and illuminating discussions of standard literary and critical works from both the European and Anglo-American tradition over the past several centuries, and refers to dozens of writers from diverse periods and nationalities. Additionally he enlists, and criticizes where appropriate, ideas from such diverse nonliterary figures as Darwin himself and writers about Darwin, T. H. Huxley, Konrad Lorenz, John Bowlby, Sir John Eccles, the prominent sociobiologists and evolutionary psychologists, S. J. Gould, Richard Lewontin, Derek Bickerton, Piaget, Karl Popper, Thomas Kuhn, Clifford Geertz, H. J. Eysenck, Cardinal Newman, Thorstein Veblen, Trotsky, Raymond Williams, and Richard Rorty, among others.One can be forgiven for wishing to forego an exploration of this demanding array of knowledge argued from the unfamiliar perspective of evolutionary biology. For in order seriously to consider Carroll’s new way of looking at human endeavor (including literature) one must also look critically at what was laboriously mastered during all those years of graduate school and tenure-driven writing for publication. No one wants to be persuaded to give up a view of the world that has been mastered with painstaking diligence. Still less does anyone want to spend time with something that according to conventional academic wisdom is downright wrong-headed. This is really the challenge of Carroll’s book—because such minor matters as the plain unfashionable title, clear writing, impressive erudition, and dated or forgotten thinkers can be overcome if the stakes are high enough.I wish to suggest that the stakes are high enough and that the time is right for this inevitable change of viewpoint. Along with others in diverse fields such as cognitive and developmental psychology, personality theory, neurology, medicine, sociology, political science, epistemology, cultural anthropology, ethics, and linguistics, I find the Darwinian perspective to offer the most comprehensive and viable possibility for an understanding of human behavior and culture, including the arts. Joseph Carroll admirably articulates this position and applies it to literary theory. I invite scholars who think that evolutionary explanations [End Page 230] are erroneous, dangerous, reductionist, simplistic, or irrelevant to read Carroll and deal seriously with his arguments. His book should be the central text for theory classes and seminars, as well as the subject of conferences. Those who would dismiss it should have the courage and curiosity to lay aside their misgivings and have a look. Especially those who are dissatisfied with the surfeit... (shrink)

This study investigates the phonetics of German nuclear rise-fall contours in relation to contexts that trigger either a contrastive or a non-contrastive interpretation in the answer. A rise-fall contour can be conceived of a tonal sequence of L-H-L. A production study elicited target sentences in contrastive and non-contrastive contexts. The majority of cases realized showed a nuclear rise-fall contour. The acoustic analysis of these contours revealed a significant effect of contrastiveness on the height/alignment of the accent peak as a function (...) of focus context. On the other hand, the height/alignment of the low turning point at the beginning of the rise did not show an effect of contrastiveness. In a series of semantic congruency perception tests participants judged the congruency of congruent and incongruent context-stimulus pairs based on three different sets of stimuli: (i) original data, (ii) manipulation of accent peak, and (iii) manipulation of the leading low. Listeners distinguished nuclear rise-fall contours as a function of focus context (Experiment 1 and 2), however not based on manipulations of the leading low (Experiment 3). The results suggest that the alignment and scaling of the accentual peak are sufficient to license a contrastive interpretation of a nuclear rise-fall contour, leaving the rising part as a phonetic onglide, or as a low tone that does not interact with the contrastivity of the context. (shrink)