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Brain imaging of human hand and tool actions

时间：2012年11月9日（周五）下午2：30

地点：逸夫楼416学术报告厅

报告人简介：

Jody Culham教授现任教于加拿大伦敦University of Western Ontario心理学学院，脑科学与思维实验室。来自加拿大卡尔加里，获得哈佛大学心理学博士学位，西安大略大学博士后。她目前的研究方向是：医学图像处理和行为运动学。Jody Culham教授的团队在过去15年里，运用核磁共振技术探究了手在做抓，够，使用工具等活动时大脑特定区域的变化情况，为该领域做出了巨大的贡献。

报告简介：

Dr. Culham will discuss new results using fMRI decoding methods (multivoxel pattern analysis, MVPA). In several experiments, subjects planned and executed hand objects toward objects within direct view. Numerous brain regions in human parietal and frontal cortex – as well as areas implicated in visual perception – were able to decode upcoming hand actions. In one experiment, subjects performed reaching or grasping actions with a hand or a tool. While some brain areas were able to decode hand actions only or tool actions only, other areas (such as premotor cortex) were able to decode actions with either the hand or the tool in a common framework. These results suggest that many human brain areas contain a rich representation of actions seconds before an action is performed. Moreover, in some regions these representations can incorporate goals regardless of whether they are accomplished by the hand or a tool.