讲题：Human Motor Sequence Learning: Distributional Analysis in Manual and Speech Serial Reaction Time Tasks
时间：2022年5月5日（星期四）14:10 – 16:00
会议连结：https://meet.google.com/qob-baac-vqi
敬邀各位师生踊跃参加 线上演讲！！
演讲大纲：
Acquisition of sequential motor skill is a crucial part of human motor learning. Sequential motor learning has been examined extensively with the Serial Reaction Time Task (SRTT). Extant studies on SRTT have focused exclusively on the evolvement of the central tendency of RT throughout learning blocks, which largely ignored the progression of essential characteristics of RT distribution in learning. Moreover, most studies investigate manual SRTT and ignored sequence learning in effectors other than hands. In the first study, we carried out distributional analysis on the performance of manual and speech SRTT by fitting the shifted-Wald distribution on blocked RTs, and compared the trends of learning as revealed in parameters capturing the onset, variation around mode, and right-tail mass of distribution. The results indicate that all shift-Wald parameters of the RT distribution decrease as the task proceeds, reflecting the general trend of learning. Interestingly, speech appears to contain stronger variation than manual response throughout different phase of learning. The learning index of these various measures were found to be comparable between response modalities. MEG on the same paradigm revealed that RT and GAMMA, but not BETA, modulation are sensitive to learning in both effectors. There are distinct loci for manual and speech sequence production, and no between-effector difference in the strength of sequential learning as revealed in either behavioral or MEG learning indices. As such, our study demonstrated a richer and fruitful approach of re-examining sequence learning in SRTT by close inspection on RT distributions and MEG spectrum in different effectors.
讲者简介：
张智宏博士毕业于美国莱斯大学心理系。曾于加拿大西安大略大学心理系担任博士后研究员；现职国立中央大学认知神经科学研究所副教授。其研究专长包括人类行动控制与学习、视觉注意力、视觉知觉、老化与认知、认知训练等。目前研究主要透过行为实验法与神经造影技术探讨「人类运动控制系统与认知系统之间的互动」及「老化对认知与行动能力（例如心智地图、空间记忆以及手部运动控制）的影响」。
讲者网页：
http://audachang.world/
http://icn.ncu.edu.tw/2-1-detail.php?id=6
主办单位：国立政治大学心理系
国立政治大学心智、大脑与学习研究中心
协办单位：台湾联合大学系统－政大办公室
国立政治大学台湾心智科学脑造影中心
国立政治大学理学院神经科学研究所