实验室李武老师邀请了纽约大学的丁鼐博士来实验室做报告，具体信息如下，欢迎感兴趣的老师和同学来听。

 

报告题目： Selection and Integration of Sequential Information: Insights from Speech Processing

报告时间：9月2日10：00

报告地点：脑成像中心308会议室（三楼大会议室）

报告摘要：

Abstract: Natural sensory stimuli, e.g. speech, music, and visual scenes,often come in sequences. Perception of sensory sequences critically relieson the neural representation of temporal order. I argue that the perceivedtemporal structure is represented by the temporal sequencing of corticalactivity, and test the hypothesis using the example of speech perception.Using magnetoencephalography (MEG), we demonstrate that as the listenersintegrate smaller speech units into larger linguistic structures (e.g.,words into phrases and sentences), distinct time scales emerge in corticalactivity, mapping hierarchically embedded linguistic structures intotemporally coupled cortical dynamics. Furthermore, in complex listeningenvironments, cortical activity is selectively synchronized to the temporalstructure of speech and largely invariant to the listening background, whichprovides a plausible mechanism to direct attention to sensory events intime. Taken together, these results strongly suggest that the sequencing ofcortical activity mediates the structural parsing and attentional selectionof sensory sequences.