It is thought that just as hunger itself, the expectancy to eat impacts attention and cognitive control toward food stimuli, but this theory has not been extensively explored at a behavioral level. In order to study the effect of expectancy to eat on attentional and cognitive control mechanisms, 63 healthy fasting participants were presented with an affective priming spatial compatibility Simon task that included both food and object distracters. The participants were randomly assigned to two groups: an “immediate expectancy” group (...) made up of participants who expected to eat immediately after the task and a “delayed expectancy” cohort made up of individuals who expected to eat a few hours later. Slower reaction times toward the food and non-food distracters and a more pronounced effect on the RTs in the incompatible condition [i.e., the Simon effect ] were noted in both groups. The effect of the food and non-food distracters on the RTs was more pronounced in the immediate with respect to the delayed expectancy group. The magnitude of the SE for the food and the non-food distracters was also greater in the immediate with respect to the delayed expectancy group. These results seem to indicate that when the expectancy to eat is short, the RTs are delayed, and the SE is more pronounced when food and non-food distracters are presented. Instead, when the expectancy to eat is more distant, the distracters have less of an effect on the RTs and the correspondence effect is smaller. Our results suggest that the expectancy to eat can modulate both attention orienting and cognitive control mechanisms in healthy fasting individuals when distracting details are competing with information processing during goal directed behavior. (shrink)

Rhodopsin, upon activation by light, transduces the photon signal by activation of the G‐protein, transducin. The well‐studied rhodopsin/transducin system serves as a model for the understanding of signal transduction by the large class of G‐protein‐coupled receptors. The interactive form of rhodopsin, R*, is conformationally similar or identical to rhodopsin's photolysis intermediate Metarhodopsin II (MII). Formation of MII requires deprotonation of rhodopsin's protonated Schiff base which appears to facilitate some opening of the rhodopsin structure. This allows a change in conformation (...) at rhodopsin's cytoplasmic surface that provides binding sites for transducin. Rhodopsin's 2nd, 3rd and putative 4th cytoplasmic loops bind transducin at sites including transducin's 5 kDa carboxyl‐terminal region. Site‐specific mutagenesis of rhodopsin is being used to distinguish sites on rhodopsin's surface that are important in binding transducin from those that function in activating transducin. These observations are consistent with and extend studies on the action of other G‐protein‐coupled receptors and their interactions with their respective G proteins. (shrink)

Although the equally pervasive and abstract concept of space has generated a vast body of disciplines, time, and the related idea of "becoming" (transforming, ...

Standard models of adolescent risk taking posit that the cognitive abilities of adolescents and adults are equivalent, and that increases in risk taking that occur during adolescence are the result of socio emotional differences in impulsivity, sensation seeking, and lack of self-control. Fuzzy-trace theory incorporates these socio emotional differences. However, it predicts that there are also cognitive differences between adolescents and adults, specifically that there are developmental increases in gist-based intuition that reflects understanding. Gist understanding, as opposed to verbatim-based analysis, (...) generally has been hypothesized to have a protective effect on risk taking in adolescence. Gist understanding is also an essential element of informed consent regarding risks in medical decision- making. Evidence thus supports the argument that adolescents’ status as mature minors should be treated as an exception rather than a presumption, because accuracy in verbatim analysis is not mature gist understanding. Use of the exception should be accompanied by medical experts’ input on the bottom-line gist of risks involved in treatment. (shrink)

Adherence to a few basic principles of textbook reading compilation have made this one of the more worthwhile introductory philosophy texts. In the first place, the editors have given lengthy and frequently complete texts. Anselm's Proslogium, Descartes' Meditations, Plato's Phaedo, and Kant's Prolegomena are given complete or nearly complete; there is a ninety-one page extract from Locke's Essay, over fifty pages of James and nearly forty pages from Whitehead. This still leaves room for ample primary material by Leibniz, Hume, and (...) Schopenhauer. The plan of the book is to frame the important primary text with intellectually contemporaneous discussion of the problems treated in the primary text, and then to bracket each section with a prologue and epilogue drawn—except in the final section where Plato has the last word—from twentieth-century literature relevant to the issues under discussion in each section. The authors are thus able to provide an historical and thematic introduction to philosophy, which together cannot help but impress the beginning student with the unity of philosophical experience. Obviously no single textbook will ever escape the need for supplementation; this one in particular will require those who would like their students to be exposed to more phenomenology and existentialism, and, to a lesser degree, analytical philosophy, to introduce additional reading. But Epstein and Kennedy have provided the basic skeleton to which may be added as much flesh as the instructor desires.—E. A. R. (shrink)

Plato is one of the key ancient authors studied by both classicists and philosophers. This long-awaited new edition contains seven of the dialogues of Plato, and is the first in the five-volume complete edition of his works in the Oxford Classical Texts series. The result of many years of painstaking scholarship, the new volume will replace the now nearly 100 year old original edition, and is destined to become just as long-lasting a classic.

The article is devoted to the formal aspects of the political power. It examines the nature of power on the basis of the analysis of dreams of her media: Russian statesmen of XIXth and early XXth centuries. The relevance of the topic due to the dynamism of a modern political culture, the inability to identify formal sources of legitimacy of authority. The results indicate the mythologization and mystification of power. Components reviewed in historical Retrospect discourses were inherited from the past (...) sacred images of power, which could not rid ourselves of its carriers. (shrink)

One of the annoying habits of philosophers is to substitute without warning a normative for a descriptive theory of the topic they are discussing—that is, in what purports to be a statement of how the subject actually presents itself they tell us instead how it ought to present itself. Current treatments of the elusive topic “meaning” seem to me to supply capital instances of this vice. Defenders of a positivist or an operational theory of meaning often give us no hint (...) that their conclusions are conclusions about how the meaning of words ought to be interpreted, not about how, by and large, it is interpreted. Without such a hint their readers naturally suppose that it is the latter problem with which they are concerned, but this is rarely the case; were it so, emphasis could hardly fail to fall on determinants of meaning that are too often neglected by philosophical analysts. (shrink)