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231.
ABSTRACT— Recent advancements in imaging methods and analysis approaches have provided important insights about the neural bases of object recognition. We address the potential limitations of standard functional magnetic resonance imaging (fMRI) and discuss methodological advancements, including fMRI-adaptation, pattern analyses, and high-resolution fMRI, that may be more appropriate for studying object and face representations. fMRI-adaptation and high-resolution fMRI measure responses of neural subpopulations within standard fMRI voxels, and pattern analyses examine the information in the distributed activations across voxels, which may differ from the mean response across these voxels. These methods have provided evidence for a multitude of representations across the human ventral stream that provide empirical constraints for cognitive theories of recognition. 相似文献
232.
We offer a study revealing the mechanisms through which communication helps actual bargaining behavior outperform economic predictions. The possibility of individually strategic behavior in the presence of private information leads to game‐theoretic predictions of less than full efficiency. We present a one‐stage, simultaneous offers bargaining game in which buyers and sellers have independent, privately held valuations for the item being sold (i.e. a bilateral auction with two‐sided private information). In three communication treatments, parties are: (a) allowed face‐to‐face communication prior to submitting offers; (b) allowed written communication prior to submitting offers; or (c) allowed no‐communication prior to submitting offers. When parties are allowed pre‐play communication, we find nearly full efficiency (98%). We examine two systematically predictable aspects of dyadic interaction—disclosure and reciprocity—to explain how negotiators achieve this efficiency. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献
233.
控制知觉材料的熟悉性和概念范例的典型性,以考察它们对内隐与外显记忆发展的影响。结果表明:(1)知觉内隐记忆的启动效应不存在年龄和熟悉性效应,而知觉外显记忆成绩则具有明显的年龄和熟悉性效应;(2)在概念内隐记忆任务上,典型范例的启动效应不存在年龄差异,非典型范例的启动效应则存在随年龄而增长的启动效应:无论是典型范例还是非典型范例的外显记忆成绩均随年龄增长而提高。 相似文献
234.
235.
Gudrun Schwarzer 《Infant and child development》2002,11(3):253-269
The present experiments examined the degree to which analytic and holistic modes of processing play a role in the way 2–5‐year‐old children process facial and non‐facial visual stimuli. Children between 2 and 5 years of age were instructed to categorize faces (in Experiment 1) and non‐facial visual stimuli, such as birds and planes (in Experiment 2), into two categories. The categories were so constructed as to allow the children to categorize the facial and non‐facial stimuli either analytically (by focusing on a single attribute) or holistically (in terms of overall similarity). The results demonstrated that the previous conclusions concerning older children's (from 6 years onwards) holistic mode of facial processing could not be generalized to younger children because most of the 2–5‐year olds processed the faces by taking single facial attributes into account. A similar pattern of results emerged for the processing of objects, showing that the majority of the children focused on single attributes. Thus, for both visual domains, holistic processing was the exception rather than the rule. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献
236.
Muriel Basile Sarah Boivin Anaïs Boutin Catherine Blois-Heulin Martine Hausberger Alban Lemasson 《Animal cognition》2009,12(4):611-619
Laterality is now known to be an ubiquitous phenomenon among the vertebrates. Particularly, laterality of auditory processing
has been demonstrated in a variety of species, especially songbirds and primates. Such a hemispheric specialization has been
shown to depend on factors such as sound structure, species specificity and types of stimuli. Much less is known on the possible
influence of social familiarity although a few studies suggest such an influence. Here we tested the influence of the degree
of familiarity on the laterality of the auditory response in the domestic horse. This species is known for its social system
and shows visible reactions to sounds, with one or two ears moving towards a sound source. By comparing such responses to
the playback of different conspecific whinnies (group member, neighbor and stranger), we could demonstrate a clear left hemisphere
(LH) preference for familiar neighbor calls while no preference was found for group member and stranger calls. Yet, we found
an opposite pattern of ear side preference for neighbor versus stranger calls. These results are, to our knowledge, the first
to demonstrate auditory laterality in an ungulate species. They open further lines of thought on the influence of the social
“value” of calls and the listener’s arousal on auditory processing and laterality. 相似文献
237.
Harriet J. Huggenberger Susanne E. Suter Ester Reijnen Hartmut Schachinger 《Brain and cognition》2009
Women’s cradling side preference has been related to contralateral hemispheric specialization of processing emotional signals; but not of processing baby’s facial expression. Therefore, 46 nulliparous female volunteers were characterized as left or non-left holders (HG) during a doll holding task. During a signal detection task they were then asked to detect the emotional baby faces in a series of baby portraits with neutral and emotional facial expressions, presented either to the left or the right visual field (VFP). ANOVA revealed a significant HG × VFP interaction on response bias data (p < .05). Response bias was lowest when emotional baby faces were presented in the visual field of cradling side preference, suggesting that women’s cradling side preference may have evolved to save cognitive resources during monitoring emotional baby face signals. 相似文献
238.
239.
为探讨结构和熟悉性在惯用语加工中的作用,本研究操纵惯用语的结构(偏正、动宾)和熟悉性(高、低),采用Eyelink 1000 plus记录104名大学生阅读包含惯用语的句子时的眼睛注视过程。结果发现:高熟悉惯用语的第一遍注视时间和总注视时间均短于低熟悉惯用语;只有加工低熟悉惯用语时,偏正结构惯用语的总注视时间短于动宾结构惯用语。结果说明,结构只影响低熟悉惯用语的晚期加工,偏正结构比动宾结构惯用语语义整合更容易;熟悉性影响惯用语整个加工过程,高熟悉比低熟悉惯用语加工更快。实验结果支持惯用语的混合模型。 相似文献
240.
影响动作图片命名的因素 总被引:1,自引:0,他引:1
图片是研究词汇习得与加工的重要材料, 而名词和动词是最主要的两类实词。然而, 目前较少有研究考察汉语中的动词加工过程, 也没有标准化的动词图片库。本研究通过成人图片命名和评定任务, 获得了265张动词图片的中文名称、命名反应时, 以及H值、命名一致性、熟悉性、视觉复杂性、表象一致性和口语习得年龄等指标, 同时也探索了影响动作图片命名反应时的因素。逐步回归分析结果发现, H值、熟悉性和视觉复杂性这三个变量可解释动词图片命名反应时72.4%的变异。此外, 本研究根据图片命名反应时将动词图片加工难度分成了五个等级。研究发现, 与名词图片相比, 动词图片的视觉复杂性更高、命名一致性更低、命名反应时更长。本研究获得的各项心理语言学指标有望为后续关于动词加工的实验研究提供重要的参考资料。 相似文献