编码期间的生理兴奋预测了情绪记忆:对阶段性和增强性皮肤导电性活动的老化研究
Michael K Yeung1, Carina K Choy2, H L Chin3
1Department of Psychology, The Education University of Hong Kong, Hong Kong, China; University Research Facility of Human Behavioral Neuroscience, The Education University of Hong Kong, Hong Kong, China.
概括
记忆编码期间的生理兴奋会影响跨年纪的回忆. 阶段性兴奋有助于积极的记忆,而增强性兴奋有助于消极的记忆,而年龄会影响增强性兴奋水平.
科学领域:
- 认知神经科学 认知神经科学
- 心理生理学 心理生理学
- 人类衰老研究研究
背景情况:
- 声明性记忆和情绪是相互关联的,但衰老对它们的影响不同.
- 生理兴奋,价值和年龄在情绪记忆中的具体作用尚未完全理解.
研究的目的:
- 研究在年轻和老年人的生理兴奋 (阶段性和强性皮肤导电) 和情绪记忆之间的关系.
- 检查价值 (正,负,中性) 和年龄如何影响这些兴奋-记忆关系.
主要方法:
- 招募了年轻的 (18-35岁) 和年长的 (55-89岁) 成年人进行情感语言学习任务.
- 在文字编码和回忆过程中测量皮肤导电活性 (阶段性皮肤导电响应和强化皮肤导电水平).
- 在编码和10分钟的延迟后,评估回忆正,负和中性单词.
主要成果:
- 两个年龄组在延迟回忆中都记得更多的情感 (积极/消极) 词,而不是中性词.
- 在编码过程中观察到对记忆的积极价值效应,与相性皮肤导电性反应 (SCR) 与积极的单词相关.
- 在编码过程中相性SCR预测了积极的单词回忆;在老年人中,较低的肌肤电导率预测了负面的单词保留.
结论:
- 编码期间的生理兴奋预测了整个生命周期的后续情感记忆.
- 阶段性兴奋对积极记忆至关重要,而增强性兴奋对负面记忆至关重要.
- 增强性兴奋的年龄相关差异可能特别影响负面刺激的记忆.
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