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Obiang P Maubert E Bardou I Nicole O Launay S Bezin L Vivien D Agin V 《Neurobiology of learning and memory》2011,96(2):121-129
Although tissue type plasminogen activator (tPA) and brain derived neurotrophic factor (BDNF) have been extensively described to influence brain outcomes in a number of disorders, their roles during physiological aging are poorly investigated. In the present study, we investigated whether maintenance of mice in different environmental conditions could influence age-associated changes in hippocampal tPA expression and BDNF maturation in relation with modifications of their cognitive performances. Our data indicate that maintenance in enriched housing led to a reversal of age-associated decrease in expression of hippocampal tPA. A subsequent increase in the level of mature BDNF and an improvement in emotional and spatial memories were observed. Taken together, these data suggest that the tPA–BDNF axis could play a critical role in the control of cognitive functions influenced both by the age and housing conditions. 相似文献
293.
Few studies have investigated the way conversational work is divided between men and women in work or problem-solving contexts. This study analyzed dialogues in the workplace between 13 pairs of male and female flight attendants asked to solve a problem adapted from the Wason task. Most previous work suggests that men speak more, interrupt more, and show a greater propensity to put forward a solution. Conversely, women’s speech acts tend to be mainly of an acquiescent or questioning type. Only the hypotheses concerning interruptions, acquiescence and putting forward a solution were confirmed. 相似文献
294.
Ferdenzi C Schirmer A Roberts SC Delplanque S Porcherot C Cayeux I Velazco MI Sander D Scherer KR Grandjean D 《Emotion (Washington, D.C.)》2011,11(5):1168-1181
Do affective responses to odors vary as a function of culture? To address this question, we developed two self-report scales in the United Kingdom (Liverpool: LEOS) and in Singapore (city of Singapore: SEOS), following the same procedure as used in the past to develop the Geneva Emotion and Odor Scale (GEOS: Chrea, Grandjean, Delplanque et al., 2009). The final scales were obtained by a three-step reduction of an initial pool of 480 affective terms, retaining only the most relevant terms to describe odor-related subjective affective states and comprised of six (GEOS) or seven affective dimensions (LEOS and SEOS). These included dimensions that were common to the three cultures (Disgust, Happiness Well-being, Sensuality Desire, and Energy), common to the two European samples (Soothing Peacefulness), and dimensions that were culture specific (Sensory Pleasure in Geneva; Nostalgia and Hunger Thirst in Liverpool; Intellectual Stimulation, Spirituality, and Negative Feelings in Singapore). A comparative approach showed that the dimensional organization of odor-related affective terms in a given culture better explained data variability for that culture than data variability for the other cultures, thus highlighting the importance of culture-specific tools in the investigation of odor-related affect. 相似文献
295.
Leila Selimbegovic Isabelle Régner Pascal Huguet 《Journal of experimental social psychology》2011,47(1):72-78
Two studies tested the impact of autobiographical recall of general versus specific academic success or failure on actual task performance. As expected, it was found that general memories of failure and specific memories of success resulted in worse performance than general memories of success and specific memories of failure. In Study 1, this performance pattern was obtained on a standard math test. In Study 2, it was replicated on a test of intellectual ability, and a mediation by fear of failure was documented. The present findings offer direct evidence that autobiographical memories of success and failure impact actual performance and also reveal the role of memory specificity in this influence. 相似文献
296.
This study investigated the Gestalt law of closure in baboons. Using a computer-controlled self-testing procedure, we trained baboons (Papio papio) to discriminate open versus closed shapes presented on a touch screen with a two-alternative forced choice procedure. Ten baboons (OPEN + group) were trained with the open shapes serving as the positive stimulus (S+), and nine others (CLOSE + group) were trained with the closed shape serving as S+. The OPEN + group obtained higher discrimination performance than the CLOSE + group (Exp 1), but its scores declined when new line segments were added to the stimuli (Exp 2) and after smoothing the end points of the open shapes (Exp 3). The CLOSE + group was less affected by the above manipulations of local stimulus dimension, but its performance was disrupted when the collinearity end points was reduced (Exp 3). Use of a visual search task revealed that the search for an open shape among closed distractors was less attention demanding in baboons than the search for a closed shape among open ones (Exp 4). It is concluded that (1) end lines rather than closeness per se are perceptual primitives for the open versus closed discrimination in baboons, and (2) the relative emphasis on local or configural cues when processing contour closure depends on experiential factors in baboons and is thus subject to interindividual variations. 相似文献
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298.
Bounoua L Cury F Regner I Huguet P Barron KE Elliot AJ 《The British journal of social psychology / the British Psychological Society》2012,51(4):626-641
The present research used correlational and experimental methods and two well-established social comparison paradigms to integrate and extend prior research from the achievement goal and social comparison literatures. In Study 1, a general disposition to engage in social comparison was positively correlated with each type of goal in the 2 × 2 model of achievement goals, suggesting that the desire to seek out social comparison information is not exclusive to a particular type of achievement goal pursuit. In Study 2, when evaluating the specific direction of social comparison (upward or downward), the pursuit of performance-approach, mastery-approach, and mastery-avoidance goals facilitated upward social comparison, and the pursuit of performance-avoidance goals prompted a shift away from upward comparison towards downward comparison. The present findings provide new insight to the emerging integration of achievement goals and social comparison. 相似文献
299.