多稳定感知会引起老年人的补偿性阿尔法活性
Kurtuluş Mert Küçük1, Annika S Wienke2, Birgit Mathes2
1Department of Psychology, Izmir University of Economics, Izmir, Türkiye.
Frontiers in aging neuroscience
|June 12, 2023
概括
老年人由于阿尔法大脑活动的改变而表现出较慢的感知逆转. 这表明,随着年龄的增长,补偿神经网络被招募来维持感知.
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
- 衰老研究研究 衰老研究
背景情况:
- 多稳定的刺激产生交替的感知,使研究内生感知过程.
- 内生感知过程随着年龄的增长而减慢,这在55岁左右的感知逆转减少的证据.
研究的目的:
- 为了确定与年龄相关的多稳定感知减缓的神经相关物.
- 用阿尔法反应检查感知失稳和维持的年龄差异.
主要方法:
- 电脑电图 (EEG) 从12名老年人和12名年轻成年人身上记录下来,这些成年人在一个强光镜替代运动 (SAM) 任务和一个控制任务中进行了测试.
- 通过波段转换来分析α频段活动 (8-14 Hz) 来评估神经反应.
- 在内源和外源感知任务期间,年龄组之间的α活动模式的比较.
主要成果:
- 年轻成年人在内源性逆转期间表现出后部α活性下降,这与之前的研究一致.
- 年长的成年人表现出α脱同步转移到前皮层区域,不包括部区域.
- 在对照 (外源) 条件期间,没有观察到阿尔法反应的显著年龄差异.
结论:
- 研究结果表明,老年人招募补偿性阿尔法网络来维持内源性感知.
- 扩展的神经网络的招募可能会延长神经和,导致老年人逆转率降低.
- 阿尔法网络动态的与年龄相关的变化会影响内生感知稳定性.
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