除了在24小时延迟后对整体情节性检索的新兴非海马体贡献之外,海马体模式完成的持久作用
Bárður H Joensen1,2, Jennifer E Ashton2, Sam C Berens3
1Department of Psychology, Lund University, Lund 221 00, Sweden bardur.hofgaard_joensen@psy.lu.se aidan.horner@york.ac.uk.
概括
海马有助于通过模式完成来检索情节性记忆,即使是在巩固之后. 海马和非海马的过程都会随着时间的推移促进记忆的恢复.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 记忆研究 记忆研究
背景情况:
- 插曲性记忆检索涉及由海马体模式完成驱动的新皮层恢复.
- 海马在巩固后的记忆检索中的作用仍在争论中,理论预测时间变量或时间不变的角色.
研究的目的:
- 调查是否经过整合后,情节性事件在整体上得到恢复.
- 为了确定海马模式的完成是否继续促进延迟后的整体恢复.
主要方法:
- 参与者学习了包含重叠元素对的事件.
- 功能磁共振成像 (fMRI) 用于测量事件检索期间的大脑活动.
- 检索发生在编码后的立即或24小时内.
主要成果:
- 观察到病例性事件的整体恢复.
- 海马图案完成与恢复相关,无论编码和检索之间的延迟.
- 一些整体恢复发生在延迟后没有海马体模式完成签名的情况下.
结论:
- 河马模式完成支持整体的情节性记忆恢复,即使在巩固期后.
- hippocampal 和非 hippocampal 机制都有助于巩固后的记忆恢复.
- 海马和新皮质可能会以附加的方式,而不是以补偿的方式,来支持情节性记忆检索.
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