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181.
Extinction has mostly been studied in conditioning paradigms, more sparsely in spatial tasks, and never as a function of the age of a spatial memory. Using rats, we compared the time-course of extinction of a recent (5 days) vs. remote (25 days) spatial memory in a water maze, over three probe trials. When the trials were set 24h apart, performance in the remote memory group was significantly worse on the first probe trial and significantly better on the third probe trial, as compared to the recent memory group, thereby showing differences between cognitive operations underlying recent vs. remote memory extinction. In contrast, when trials were given consecutively, both groups showed a similar profile of extinction. Furthermore, in a room with overly-salient cues providing a strong remote memory trace, no difference between groups was observed when the spaced extinction paradigm was used. These results might be related to a balance between reconsolidation and extinction processes occurring after a first retrieval experience, of which the outcome may depend on the extinction protocol, and on the age and strength of a memory. 相似文献
182.
The progressive demasking (PDM) task is a perceptual identification task using degraded stimulus presentation procedures, but with the advantage of providing response time (RT) measures on each trial. Participants simply press a response button whenever they recognize a word. In this article, we present newly developed, easy-to-use freeware for PDM. Considering the difficulty of programming such a paradigm with standard experimental software, we developed a program based on high-level C libraries to be executed on Windows XP computers. The program execution is millisecond accurate forRT measurements and generates the fewest possible display duration errors. 相似文献
183.
The authors investigated how expert dancers achieve accurate timing under various conditions. They designed the conditions to interfere with the dancers' attention to time and to test the explanation of the interference effect provided in the attentional model of time processing. Participants were 17 expert contemporary dancers who performed a freely chosen duration while walking and executing a bilateral cyclic arm movement over a given distance. The dancers reproduced that duration in different situations of interference. The process yielded temporal overproductions, validating the attentional model and extending its application to expert populations engaged in complex motor situations. The finding that the greatest overproduction occurred in the transfer-with-improvisation condition suggests that improvisation within a time deadline requires specific training. 相似文献
184.
Handgraaf MJ Van Dijk E Vermunt RC Wilke HA De Dreu CK 《Journal of personality and social psychology》2008,95(5):1136-1149
The authors investigate the effect of power differences and associated expectations in social decision making. Using a modified ultimatum game, the authors show that allocators lower their offers to recipients when the power difference shifts in favor of the allocator. Remarkably, however, when recipients are completely powerless, offers increase. This effect is mediated by a change in framing of the situation: When the opponent is without power, feelings of social responsibility are evoked. On the recipient side, the authors show that recipients do not anticipate these higher outcomes resulting from powerlessness. They prefer more power over less, expecting higher outcomes when they are more powerful, especially when less power entails powerlessness. Results are discussed in relation to empathy gaps and social responsibility. 相似文献
185.
Joël Bradmetz 《Axiomathes》2002,13(2):127-146
Beyond their linguistic and rhetorical uses, the mental epistemic verbs to knowand to believe reveal a basic conceptual system for human intentionality and the theory of representational mind. Numerous studies, particularly
in the field of child development, have been devoted to the conditions under which knowledge and belief are acquired. Upstream
of this empirical approach, this paper proposes a topological model of the conceptual structure underlying the linguistic
use of to know and to believe. A cusp model of catastrophe theory is chosen to model the formation of epistemic states. Its main characteristic is considering
to believe as an intermediate state which lacks stability and presents the delayed effect of hysteresis. The attribution of mental states
to the other (viewpoint of the third person) is obtained by the crossing of first and third person knowledge and belief, which
gives rise to new categories (to know if and to falsely believe) and closes the system. Another merging of the beliefs of persons A and B, using the butterfly catastrophe, provides a model
of interpersonal belief appreciated by an independent observer along a potential evolving from agreement to disagreement.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
186.
187.
Marie-Pascale Noël 《Child neuropsychology》2013,19(5):413-430
This paper aimed to test the specificity of predicting power of finger gnosia on later numerical abilities in school-age children and to contribute to the understanding of this effect. Forty-one children were tested in the beginning of Grade 1 on finger gnosia, left–right orientation (another sign of the Gerstmann “syndrome”), and global development. Fifteen months later, numerical and reading abilities were assessed. Analyses of the results indicated that, contrary to the general measures of cognitive development, performance in the finger gnosia test was a good predictor of numerical skills 1 year later but not of reading skills, which proves the specificity of that predictor. The same conclusion was also true for the left–right orientation. However, finger gnosia could equally predict performance in numerical tasks that do or do not rely heavily on finger representation or on magnitude representation. Results are discussed in terms of the localizationist and the functional hypotheses. 相似文献
188.
Applied Research in Quality of Life - Cars represent a valuable real asset that most individuals use on a daily basis. Although cars are a form of material prosperity like income and other forms of... 相似文献
189.
A case of pure word deafness due to a left temporal infarct is reported. The results of dichotic tests suggest that auditory verbal material may be processed in the right hemisphere. The inability to repeat nonsense words, the frequent semantic paraphasias in real-word repetition tasks, and the capacity to give a partial account of the meaning of a word that the patient cannot repeat show that despite the impairment of the phonological analysis, lexical semantic processing is possible. An attempt is made to demonstrate that the patient resorts to this semantic processing and that this reflects the linguistic competence of the right hemisphere. 相似文献
190.