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心理学大讲堂第102期学术报告预告:Perceptual learning and neural plasticity in adult human brain

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讲座题目:心理学大讲堂第102期学术报告预告:Perceptual learning and neural plasticity in adult human brain

讲座人: 方方 教授

主持人:王振宏 教授

讲座时间:15:30

讲座日期:2018-1-24

地点:雁塔校区教学九楼9209室

主办单位:心理学院

讲座内容:

Perceptuallearning refers to remarkable performance improvement after intensive training.It is a popular model for studying cortical plasticity. So far, we still do notknow much about the neural mechanisms of visual perceptual learning. There is adebate between early-stage theories and late-stage theories. Early-stagetheories argue that perceptual learning sharpens the tuning properties of earlyvisual neurons. Late-stage theories argue that perceptual learning reweightsthe outputs of visual channels for optimal decision making. In my lab, wecombined psychophysics, magnetic resonance imaging, and transcranical magneticstimulation to investigate the neural mechanisms of face and motiondiscrimination learning. We show that: 1) perceptual learning reduces internalneural noise and sharpens cortical tuning to trained stimuli in sensory codingareas; 2) perceptual learning modifies the connections between sensory andhigher areas for optimal decision-making; 3) The anatomical structure ofsensory cortex could predict the effect of perceptual training; 4) The effectsof perceptual learning extend beyond the retuning of specific neuralpopulations that mediate performance of the trained task. Learning could modifythe inherent functional specializations of visual cortical areas.


讲座人简介:

方方,教授、博士生导师,北京大学心理与认知科学学院院长,行为与心理健康北京市重点实验室主任,麦戈文脑科学研究所常务副所长,机器感知与智能教育部重点实验室副主任;长江学者特聘教授、中青年科技创新领军人才、百千万人才工程国家级人选、国家有突出贡献中青年专家、万人计划科技创新领军人才,政府特殊津贴获得者,荣获中国青年科技奖、青年科学家奖。International Journal of Computer Mathematics特邀编委、中国神经科学学会常务理事、中国心理学会常务理事、中国心理学会国际学术交流工作委员会副主任、《中国大百科全书》第三版心理学卷副主编。主要研究领域为利用脑成像技术、心理物理学和计算模型研究视知觉、意识、注意和它们的神经机制。


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