The emotional regulating function of sleep: psychophysiological study

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K04187
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Experimental psychology
• Research Institution: Hiroshima University
• Principal Investigator: Ogawa Keiko 広島大学, 総合科学研究科, 准教授 (70546861)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 情動調整 / レム睡眠 / ノンレム睡眠 / 脳波 / 感情記憶 / 宣言記憶

Outline of Final Research Achievements

Recently, it has been suggested that sleep might play an important role in the homeostasis of emotional brain regulation. First, we investigated the emotional regulation function of sleep. Results indicated negative emotion in the partial REM sleep deprivation group increased more than in the partial NREM sleep deprivation group, after sleep. Moreover, the degree of negative emotion after sleep had a significantly negative correlation with the REM sleep duration. Next, we investigated the emotional memory consolidation function of sleep using the emotional words. Participants were divided into 2 groups: 90-min daytime sleeping and awaking. Results indicate that the rate had a significantly positive correlation with the slow wave sleep (SWS) duration and REMs density. These results suggested that REM sleep might play an important role in mood improvement, and NREM sleep (SWS) might relate to emotional memory consolidation.

Free Research Field

認知神経科学