预期对年轻人和老年人的记忆形成的影响
Tineke K Steiger1, Mushfa Yousuf1, Nico Bunzeck1,2
1Department of Psychology, University of Lübeck, Lübeck, Germany.
Human brain mapping
|June 28, 2023
概括
新闻通过大脑活动增强了长期记忆力,但随着年龄的增长,这种效果会减弱. 预期在新奇性驱动的记忆形成中起着关键作用,影响大脑区域,如中间叶.
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
- 老年学是一门学科.
背景情况:
- 新奇性可以通过半边缘系统来增强长期记忆.
- 参与新奇处理的大脑区域通常在衰老过程中退化.
- 关于老化如何影响新奇对记忆的影响,目前的证据有限.
研究的目的:
- 调查新奇对年轻人和老年人的长期记忆的影响.
- 探索创新对整个生命周期内记忆的影响背后的神经机制.
- 检查期望在新奇驱动的记忆形成中的作用.
主要方法:
- 功能性磁共振成像 (fMRI) 用于健康的年轻人和老年人.
- 参与者通过彩色线索预测编码图像 (新鲜或熟悉).
- 大约24小时后,对图像的识别记忆进行了测试.
主要成果:
- 预期的新奇图像在两个年龄组中都比意外的图像更好地被识别.
- 新奇的线索激活了与注意力相关的区域 (角,下叶).
- 成功识别新的物品显示了与年龄相关的大脑激活模式的差异.
结论:
- 预期通过中间叶活动增强对新事物的记忆.
- 新闻对记忆的有益影响似乎在老年人中减弱.
- 年龄影响新奇的处理,年轻的成年人显示较强的海马激活和老年人较强的注意力相关的激活.
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