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Dissecting posterior parietal circuits for decision making a

发布人:周仁来  发布时间:2011-05-12   浏览次数:17


各位老师,您好:由实验室李武老师邀请了Georgia Health Sciences University的He  Cui博士来做报告,具体信息如下,欢迎感兴趣的老师参加。题目:Dissecting posterior parietal circuits for decision making and motor  planning时间:5月16号(周一)上午10点地点:脑成像中心三层小会议室报告人: Dr. He (名)Cui(姓)
Lab Head
Brain & Behavior Discovery  Institute
Georgia Health Sciences University, USA


Abstract: To  produce appropriate actions in response to complex and
dynamic environments,  the brain must rapidly generate potential action
plans and choose among them,  and then translate the selected abstract
plan in the extrinsic sensory  representation into a complex muscle
activation pattern in the intrinsic  movement representation. Although
neural activity in several distinct  functional subareas of the posterior
parietal cortex (PPC) has been  characterized for a variety of
sensory-motor behaviors associated with  different body parts,
understanding the operation of this complex cortical  network at the
mechanistic level lags far behind. A full understanding how  decision is
formed and action goals converted into physical action not only  requires
an interdisciplinary exploration of information flow and a  highly
integrative examination of network mechanisms across  sensorimotor
circuits, but also sophisticated behavioral paradigms able  to
distinguish two neural processes of general motor intention at  the
cognitive level and detailed motor preparations at the executive  level.
I will present some recent neurophysiological studies to  elucidate
complex neural processes of sensory-motor transformation via  the
utilization of novel decision making and sequential movement  behavioral
paradigms.

Biography: Dr. Cui received a Bachelor in  Physics from Tsinghua
University in 1994 and a Master in Biophysics from  Chinese Academy of
Sciences (CAS) in 1997, and completed his PhD in  Neuroscience at the
University of Illinois at Urbana-Champaign (UIUC) in  2003. During his
PhD study, he conducted the first examination of neural  activity in the
parabigeminal nucleus in awake, behaving animals, and  revealed for the
first time this structure’s contribution to visuomotor  behavior. In
2003, he joined the Richard Andersen lab at California Institute  of
Technology as a postdoctoral scholar, where he designed  some
sophisticated behavioral paradigms to study cortical mechanisms  of
decision making and motor planning. His postdoctoral studies  have
provided empirical evidence that posterior parietal cortex  encodes
autonomously selected motor plans and separate cortical areas  distinctly
encode decision formation and motor preparation in a  hierarchical
manner. In 2008, he joined the faculty in Brain and Behavior  Discovery
Institute and Department of Psychiatry and Health Behavior at  Georgia
Health Sciences University and started his own lab focusing  on
sensory-motor transformation in the parietal-frontal circuits. In  2010,
he was selected as one of 118 scientists, mathematicians, and  economists
in the US and Canada to receive Alfred P. Sloan Research  Fellowships.
                 此致敬礼!                                     杨静                              2011.05.12