更年期状态和时间学年龄的群体内差异影响中年女性空间背景记忆的功能神经相关值
Arielle Crestol1, Sricharana Rajagopal2, Rikki Lissaman2,3
1Integrated Program in Neuroscience, McGill University, Montréal, Quebec H3A 1A1, Canada.
概括
更年期状态显著影响中年妇女的情节性记忆和大脑活动. 绝经后与较差的空间记忆和改变的大脑功能有关,特别是在晚年.
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
- 妇女健康 妇女健康
背景情况:
- 插曲性记忆对于回忆过去经历至关重要,在中年时可能会下降.
- 更年期,对于女性来说是一个重要的生物学转变,通常发生在中年期.
- 更年期状态对情节性记忆及其神经支的影响在很大程度上仍未被探索.
研究的目的:
- 调查更年期状态 (更年期前和更年期后) 如何影响空间背景的情节性记忆.
- 检查记忆编码和检索与更年期状态和时间表年龄相关的神经相关性.
- 为了确定与年龄相关的大脑活动和记忆能力的差异是否在绝经前和绝经后的妇女之间有所不同.
主要方法:
- 进行了一项与事件相关的功能磁共振成像 (fMRI) 研究.
- 参与者包括31名绝经前和41名绝经后女性.
- 多变量行为局部最小平方分析了在情节性记忆任务期间的时间表年龄,检索准确度和大脑活动之间的相关性.
主要成果:
- 在这个群体中,绝经后的状态和晚年与空间上下文记忆的减少有关.
- 在更年期后的女性中,年龄较大与皮,副海马皮和下皮层活动的减少以及记忆力较差有关.
- 绝经前的女性在特定的大脑区域 (角回形,中线,前额皮层) 显示了重叠的编码和检索活动,这与更好的记忆性能有关.
结论:
- 更年期状态和时间表年龄相互作用,影响中年期的情节性记忆及其神经相关物.
- 更年期直接调节与年龄相关的和与表现相关的脑活动模式.
- 截然不同的神经系统支持绝经前与绝经后妇女的空间背景记忆,这表明绝经对认知大脑功能的重大影响.
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