报告题目:Nostril-specific and structure-based olfactory learning of chiral discrimination in human adults

报 告 人:周雯 教授

时间:20181026日(周五)下午15:10-16:40

地点:独墅湖校区10055536室(教育学院学术报告厅)

报告人简介:

周雯,中国科学院心理研究所研究员、博士生导师。2004年毕业于北京大学心理学系,2009年于美国Rice University获心理学博士学位。先后入选中科院百人计划,中科院脑科学与智能技术卓越创新中心及生命科学科教融合卓越中心,中组部万人计划青年拔尖人才,教育部长江学者青年学者计划,获国家自然科学基金优秀青年科学基金项目资助。研究方向为人类嗅觉,综合使用心理物理学、神经心理学、生理记录、脑功能成像(如EEG, fMRI)等手段来探索嗅知觉编码及性质、人体化学信号的嗅觉表征、以及嗅觉与情绪及其它感知觉系统间的交互。在上述方向的研究成果发表在Current Biology, eLife, Cerebral Cortex, Journal of Neuroscience, Psychological Science等期刊上,得到了国际媒体的广泛关注。

报告内容简介:

Practice makes perfect. In human olfaction, such plasticity is generally assumed to occur at the level of cortical synthetic processing that shares information from both nostrils. Here we present findings that challenge this view. In two experiments, we trained human adults unirhinally for the discrimination between odor enantiomers over a course of about 10 to 11 days. Results showed that training-induced perceptual gain was restricted to the trained nostril yet partially generalized to untrained odor enantiomers in a structure- rather than quality- based manner. In other words, learning enhanced the differentiation of chirality (molecular configuration) as opposed to odor quality (odor object) per se. These findings argue that, contrary to earlier beliefs, one nostril does not readily know what the other learns. Moreover, the initial analytical processing of the structural features of uninarial olfactory input remains plastic in human adults.

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