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第105回、第106回WPI-IIISセミナー

2017/03/01

日時:平成29年3月1日(水)
    ・第105回 WPI-IIIS セミナー(11:00-12:00)
    ・第106回 WPI-IIIS セミナー(12:00 -13:00)

場所:筑波大学 医学系エリア 睡眠医科学研究棟 1F 講堂GooglrMap版へ
アクセス:「筑波大学筑波キャンパスへの交通アクセス」をご覧ください。
利用停留所(関東鉄道バス):筑波大学中央行き又は筑波大学循環バス「追越学生宿舎前

第105回WPI-IIISセミナー

演者: Dr. Masami Tatsuno
Department of Neuroscience/Canadian Centre for Behavioural Neuroscience,
University of Lethbridge

演題:“Reactivation of procedural memory during REM sleep”

要旨:It has been suggested that memory is consolidated during sleep when both motor output and sensory input are minimized. Reactivation of behaviourally induced neural activity during non-REM sleep as well as quiet wakefulness supports this conjecture. However, relatively little is known about memory reactivation during REM sleep. In this talk, first, I will review the recent electrophysiological studies on memory reactivation. Second, I will talk about our investigation of REM reactivation using spatial memory task as well as procedural memory task. Our preliminary data suggest that REM reactivation can be detected with procedural memory but not with spatial memory. The results indicate that consolidation of procedural memory may benefit from REM sleep reactivation.

第106回WPI-IIISセミナー

演者: Dr. Kaori Takehara-Nishiuchi
Department of Psychology, University of Toronto

演題:“Balance between abstraction and detail in neural code in the prefrontal-entorhinal circuit”

要旨:Many events in our lives resemble experiences we have had before, without being identical to them. Memories of these experiences may be grouped based on their commonality or separated based on their incidental, contextual details. In this talk, I will present evidence suggesting that these two styles of memory representations co-exist in the cortex. First, I will show that neural ensemble activity in the medial prefrontal cortex becomes more sensitive to relevant, associative information common across multiple experiences while apparently independently losing irrelevant, stimulus modality information unique to each experience. I will then contrast this observation with neuron ensemble activity in the lateral entorhinal cortex that differentiates multiple experiences by encoding their unique situational context with lasting stability. Based on these findings, I will discuss computations that these two regions may perform for building a generalizable abstraction of the world (“knowledge”) while maintaining accurate records of each experience (“episodic memory”).

問い合わせ:国際統合睡眠医科学研究機構 029-853-8080(内線8080)

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