右侧睡眠与图像识别中的中性对情绪偏差有关:一夜间的研究
Risto Halonen1, Sanni Luokkala2, Liisa Kuula1
1SleepWell Research Program, Research Program Unit, Faculty of Medicine, University of Helsinki, P.O. Box 21, 00014, Helsinki, Finland.
Cognitive, affective & behavioral neuroscience
|June 12, 2023
概括
睡眠期间大脑半球的活动会影响情绪事件的记忆. 在快速睡眠中,右侧大脑活动与随着时间的推移对负面图像的记忆力较差有关.
科学领域:
- 神经科学是一个神经科学.
- 睡眠研究 睡眠研究
- 认知心理学 认知心理学
背景情况:
- 睡眠对于记忆巩固至关重要,特别是对情感内容.
- 睡眠期间情绪记忆优先级的机制,特别是半球不对称性,尚未得到充分理解.
- 虽然REM睡眠theta与情感记忆有关,但非REM睡眠侧面化仍然未被探索.
研究的目的:
- 为了研究REM theta的横向化,睡眠,缓慢振荡-合和夜间识别记忆之间的关联.
- 为了检查这些睡眠振荡如何与中性与情感厌恶图片的记忆有关.
- 探索半球不对称性在非REM睡眠振荡中在情感记忆处理中的作用.
主要方法:
- 32名健康的成年人编码了中立和情绪化的图片.
- 记录了夜间睡眠的多睡眠图.
- 对图片的识别记忆 (可辨别性,d) 在编码后的即时,12小时和24小时间隔进行了测试.
主要成果:
- 24小时后,与中性图片相比,情感图片的分辨率不太准确.
- 额头快密度的右向左对比与24小时检索时的情感差异有关.
- 缓慢振荡-线合的侧向化与所有检索时间中中性与情感记忆的较大差异相关.
结论:
- 非REM睡眠振荡中的半球不对称性可能在处理中性与情绪信息方面发挥作用.
- 这种不对称性可能受到离线记忆巩固机制和个人认知/情感偏差的影响.
- 研究结果强调了研究横向睡眠振荡对于理解情感记忆巩固的重要性.
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