Brain Gene Expression During REM Sleep Depends on Prior Waking Experience

In most mammalian species studied, two distinct and successive phases of sleep, slow wave (SW), and rapid eye movement (REM), can be recognized on the basis of their EEG profiles and associated behaviors. Both phases have been implicated in the offline sensorimotor processing of daytime events, but the molecular mechanisms remain elusive. We studied brain expression of the plasticity-associated immediate-early gene (IEG) zif-268 during SW and REM sleep in rats exposed to rich sensorimotor experience in the preceding waking period. Whereas nonexposed controls show generalized zif-268 down-regulation during SW and REM sleep, zif-268 is upregulated during REM sleep in the cerebral cortex and the hippocampus of exposed animals. We suggest that this phenomenon represents a window of increased neuronal plasticity during REM sleep that follows enriched waking experience.     

Bulk modulus of semiconductors and its pressure derivatives

Expressions for the bulk modulus and its first and second pressure derivatives for group I–VII, II–VI, III–V and IV–IV semiconductor binary compounds are derived using an ab initio pseudopotential approach to the total crystal energy within the framework of local density functional formalism. The computed results are very close to the available experimental data.     

Ethnicity-Related Sources of Stress and Their Effects on Well-Being

Early research on ethnicity focused on the stereotyped thinking, prejudiced attitudes, and discriminatory actions of Euro-Americans. Minority-group members were viewed largely as passive targets of these negative reactions, with low self-esteem studied as the main psychological outcome. By contrast, recent research has increasingly made explicit use of stress theory in emphasizing the perspectives and experiences of minority-group members. Several ethnicity-related stressors have been identified, and it has been found that individuals cope with these threats in an active, purposeful manner. In this article, we focus on ethnicity-related stress stemming from discrimination, from stereotypes, and from conformity pressure arising from one's own ethnic group. We discuss theory and review research in which examination of ethnicity-related outcomes has extended beyond self-esteem to include psychological and physical well-being.     

Automation of Stress Recognition Using Subjective or Objective Measures

Automation of stress recognition involves collecting stress-reflecting data and then using a computational technique to estimate the stress level corresponding to that data. With the advent of objective sensors or mobile context measurement, automated stress recognition revolves around and is restricted to only these measures. Traditional subjective questionnaires and self-reports, though highly reliable, have been bounded to only clinical settings, without extending their scope to general population and natural environments. This review discusses some widely used questionnaires for measuring stress which can prove to be equally efficient to their conventional paper-based application when computerized. A summary on highly accepted objective measures of stress, including physiological, behavioural and contextual data, is provided next. Past research work using these subjective and objective measures for automatically recognizing stress is also reviewed. A comparative analysis of questionnaires and objective measures is conducted, which helped in highlighting significant advantages and disadvantages of the measures. Use of reports or questionnaires for automating stress recognition is suggested, owing to improved costs, high reliability and user trust.     

Husserl,the mathematization of nature,and the informational reconstruction of quantum theory

Continental Philosophy Review - As is well known, the late Husserl warned against the dangers of reifying and objectifying the mathematical models that operate at the heart of our physical...     

Why not find out whether religious beliefs predict surgical outcomes? If they do, why not find out why? Reply to Freedland (2004).

In this reply to K. E. Freedland's (see record 2004-13299-002) comments on R. J. Contrada et al. (see record 2004-13299-001), it is shown that the statistical issues he raised, and his preferred interpretation of the findings, were adequately addressed in the original article. It is argued that methodological limitations also were fully characterized and do not differ in kind from those of biomedical studies. Other issues discussed include the merits of focusing on distal versus proximal causation, plausibility of explanatory mechanisms for health effects of religious involvement, and potential practical applications that do not require manipulation of religious involvement. The article is concluded by commenting on subtle aspects of discourse that may unnecessarily polarize discussions of possible physical health effects of religious involvement.     

A framework for Bayesian optimality of psychophysical laws

The Weber–Fechner law states that perceived intensity is proportional to physical stimuli on a logarithmic scale. In this work, we formulate a Bayesian framework for the scaling of perception and find logarithmic and related scalings are optimal under expected relative error fidelity. Therefore, the Weber–Fechner law arises as being information theoretically efficient under the constraint of limited representability. An even stronger connection is drawn between the Weber–Fechner law and a Bayesian framework when neural storage or communication is the dominant concern, such as for numerosity. Theoretical results and experimental verification for perception of sound intensity are both presented.     

Emotional intelligence and employee innovation: Sequential mediating effect of person-group fit and adaptive performance

IntroductionHow emotional intelligence interrelates with employee innovation becomes a timely and crucial topic for research, for human resource and organizational psychology practitioners and academicians alike.ObjectiveThe study examined the mediating effect of person-group fit and adaptive performance on employee innovation. A sequential mediation framework explaining the relationship between emotional intelligence and employee innovation was constructed. This study differentiates itself from other similar studies on emotional intelligence and employee innovation since it suggests a novel approach to enhance employee innovation.MethodsElectronic as well as paper-based surveys were conducted to collect the data and the analysis of 417 responses revealed that the hypotheses were strongly supported by the data.ResultsWe found that a sequential mediation effect exists between person-group fit and adaptive performance. The findings offer a significant contribution to the field of human resources, since prior research has examined neither the simple mediating effect nor the sequential mediating effect of person-group fit and adaptive performance between emotional intelligence and employee innovation.ConclusionThe theoretical and practical implications of the findings were explored which have substantial value for human resources especially, for recruitment and training teams.     

Measures of Ethnicity‐Related Stress: Psychometric Properties,Ethnic Group Differences,and Associations With Well‐Being1

This study introduces new measures of ethnicity‐related stress and a newly adapted measure of ethnic identity. Ethnicity‐related stressors assessed in this study were perceived discrimination, stereotype confirmation concern, and own‐group conformity pressure. Ethnic identity refers to the subjective sense of ethnic group membership and, following Luhtanen and Crocker (1992), was assessed as public regard, identity centrality, and private feelings. Data for 333 undergraduates from diverse ethnic groups indicated that the measures are psychometrically sound. Ethnic group differences for mean scores demonstrated the measures’ known‐groups validity. Cross‐sectional analyses indicated that ethnicity‐related stress and identity constructs captured by the instruments are related to measures of psychological and physical well‐being. The new measures may be useful in the investigation of psychological aspects of ethnicity and their adaptive consequences.     

Grain boundary networks in high-performance,heteroepitaxial, YBCO films on polycrystalline,cube-textured metals

Grain boundaries (GBs) in high-temperature superconductors suppress the critical current density (J _c) dramatically, with the J _c decreasing exponentially with GB angle, especially when GB misorientation exceeds 4°. To reduce the number of high-angle GBs, fabrication of biaxially textured, superconducting wires via heteroepitaxial growth on cube-textured metals has been widely investigated worldwide. Such wires exhibit very high J _c in applied magnetic fields despite having a majority of GBs with total misorientations in the range 4–8°. Here, we show that GB networks in these wires have numerous GBs with out-of-plane misorientations greater than 4° but few boundaries having in-plane misorientations greater than 4°. Transport measurements on bicrystal GBs show that GBs with out-of-plane tilts between 4° and 8° are well linked. Together, these results explain the high performance of superconducting films on cube-textured metals.