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111.
One of the stable hypotheses in systems neuroscience is the relationship between attention and the enhancement of visual responses when an animal attends to the stimulus in its receptive field (Goldberg and Wurtz, 1972 Journal of Neurophysiology 35 560-574). This was first discovered in the superior colliculus of the monkey: neurons in the superficial layers of the superior colliculus responded more intensely to the onset of a stimulus during blocks of trials in which the monkey had to make a saccade to it than they did during blocks of trials in which the monkey had to continue fixating a central point and not respond to the stimulus. This enhancement has been found in many brain regions, including prefrontal cortex (Boch and Goldberg, 1987 Investigative Ophthalmology 28 Supplement, 124), V4 (Moran and Desimone, 1985 Science 229 782-784), and lateral intraparietal area (Colby et al, 1996 Journal of Neurophysiology 76 2841-2852; Colby and Goldberg, 1999 Annual Review of Neuroscience 22 319-349), and even V1 (Lamme et al, 2000 Vision Research 40 1507-1521). In these studies the assumption has been that the monkey attended to the stimulus because the stimulus evoked an enhanced response. In the experiments described here we show that for abruptly appearing stimuli, attention is not related to the initial response evoked by the stimulus, but by the activity present on the salience map in the parietal cortex when the stimulus appears. Attention to the stimulus may subsequently, by a top down signal, sustain the map, but stimuli can as easily be suppressed by top down features as they can be enhanced. 相似文献
112.
Juan M. Falomir‐Pichastor Gabriel Mugny Alain Quiamzade Fabrice Gabarrot 《European journal of social psychology》2008,38(4):587-600
Drawing on regulatory focus theory, the present work examined the motivations underlying intergroup attitudes expressed under conditions of majority versus minority support. In two studies, participants expressed their attitudes towards equality and non‐discrimination of foreigners and were informed that the equality and non‐discrimination principle was supported by either a majority or a minority. Regulatory focus was assessed as the extent to which participants felt promotion‐related and prevention‐related emotions when acting either inconsistently or consistently with the egalitarian principle. Results provided evidence supporting the hypothesis that attitudes are related to prevention emotions when supported by a majority, but to promotion emotions when supported by a minority. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献
113.
Perception of American Sign Language (ASL) handshape and place of articulation parameters was investigated in three groups of signers: deaf native signers, deaf non-native signers who acquired ASL between the ages of 10 and 18, and hearing non-native signers who acquired ASL as a second language between the ages of 10 and 26. Participants were asked to identify and discriminate dynamic synthetic signs on forced choice identification and similarity judgement tasks. No differences were found in identification performance, but there were effects of language experience on discrimination of the handshape stimuli. Participants were significantly less likely to discriminate handshape stimuli drawn from the region of the category prototype than stimuli that were peripheral to the category or that straddled a category boundary. This pattern was significant for both groups of deaf signers, but was more pronounced for the native signers. The hearing L2 signers exhibited a similar pattern of discrimination, but results did not reach significance. An effect of category structure on the discrimination of place of articulation stimuli was also found, but it did not interact with language background. We conclude that early experience with a signed language magnifies the influence of category prototypes on the perceptual processing of handshape primes, leading to differences in the distribution of attentional resources between native and non-native signers during language comprehension. 相似文献
114.
Shira Gabriel Mauricio Carvallo Brooke Tippin 《Journal of experimental social psychology》2008,44(2):330-343
The current research proposes that thinking about friends improves feelings about the self and does so differentially depending on avoidance of intimacy. Based on previous findings that individuals who avoid intimacy in relationships (avoidant individuals) contrast their self-concepts with primed friends whereas those who pursue intimacy in relationships (non-avoidant individuals) assimilate their self-concepts to primed friends [Gabriel, S., Carvallo, M., Dean, K., Tippin, B. D., & Renaud, J. (2005). How I see “Me” depends on how I see “We”: The role of avoidance of intimacy in social comparison. Personality and Social Psychology Bulletin, 31, 156-157], we predicted that friends who embody negative aspects of self would lead avoidant individuals to like themselves more, whereas friends who embody positive aspects of self would lead non-avoidant individuals to like themselves more. A pretest determined that good friends were seen as more similar to positive and ideal aspects of the self, whereas friends about whom participants had more mixed feelings (ambivalent friends) were seen as more similar to disliked and feared aspects of the self. Four experiments supported the main hypotheses. In Experiment 1, non-avoidant individuals like themselves more when good friends were primed. In Experiment 2, avoidant individuals like themselves more when ambivalent friends were primed. In Experiment 3, non-avoidant individuals liked themselves better after thinking about a friend’s positive traits, whereas avoidant individuals liked themselves better after thinking about a friend’s negative traits. In Experiment 4, all individuals under self-esteem threat strategically brought friends to mind who would help them like themselves more. 相似文献
115.
116.
Philosophical Studies - As neuroscience progresses, we will not only gain a better understanding of how our brains work, but also a better understanding of how to modify them, and as a result, our... 相似文献
117.
Gabriel Uzquiano 《Synthese》2009,170(3):331-347
The paper is concerned with the bad company problem as an instance of a more general difficulty in the philosophy of mathematics.
The paper focuses on the prospects of stability as a necessary condition on acceptability. However, the conclusion of the
paper is largely negative. As a solution to the bad company problem, stability would undermine the prospects of a neo-Fregean
foundation for set theory, and, as a solution to the more general difficulty, it would impose an unreasonable constraint on
mathematical practice. 相似文献
118.
Darnon C Harackiewicz JM Butera F Mugny G Quiamzade A 《Personality & social psychology bulletin》2007,33(6):813-827
Performance-avoidance goals (the desire to avoid performing more poorly than others do) have been shown to have consistently deleterious effects on performance but the effects of performance-approach goals (trying to outperform others) are more complex. Two studies examine uncertainty as a moderator of the effect of performance-approach goals on performance. Experiment 1 shows that manipulated performance-approach goals lead to better performance than do performance-avoidance goals in the absence of uncertainty about performance but when participants learn that a coactor disagreed with them about problem solutions, creating uncertainty, performance-approach goals do not differ from performance-avoidance goals in their effect on performance. Experiment 2 shows that uncertainty also moderates the effects of self-set performance-approach goals. Moreover, the same dynamic occurs with another kind of uncertainty: negative competence feedback. 相似文献
119.
120.
This paper is a short survey of different languageswith imperfect information introduced in (Hintikka and Sandu 1989).The imperfect information concerns both quantifiers and connectives.At the end, I will sketch a connection between these languages and linearlogic. 相似文献