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年龄之间的关系,在单一和双重任务条件下,熟悉度的fMRI相关性和基于熟悉度的记忆性能
bioRxiv : the preprint server for biology
|July 3, 2023
概括
年龄和注意力分裂对熟悉的神经和行为估计的影响最小,这表明这些记忆过程在不同的认知负载和年龄组中是强大的.
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
- 老年学是指老年学的学科.
背景情况:
- 熟悉性和新奇性检测对于记忆性能至关重要.
- 以前的研究表明,年龄和注意力分散会影响认知功能,包括记忆力.
研究的目的:
- 研究熟悉性和新奇性检测的神经相关性.
- 检查年龄和注意力分裂对这些神经相关和记忆性能的影响.
主要方法:
- 功能磁共振成像 (fMRI) 用于测量大脑活动.
- 参与者 (年轻人和老年人) 在单任务和双任务条件下进行了关联识别测试.
- 分析了fMRI数据,以确定与熟悉和新奇效应相关的神经区域.
主要成果:
- 对熟悉性的行为估计在各个年龄组和任务条件中是一致的.
- 功能磁共振扫描显示,在头顶和前额叶皮层以及尾巴皮层中,强烈的熟悉效应.
- 在前叶中叶观察到新奇效应.
- 熟悉性和新奇性效应都与年龄和任务条件不变.
- 熟悉效应与熟悉强度的行为估计有积极的相关性.
结论:
- 年龄和注意力分散对熟悉的行为和神经测量都有很小的影响.
- 熟悉性和新奇性的神经相关物在成年人一生中以及在不同的注意力需求下非常稳定.
- 这些发现有助于了解老化和认知负载下记忆过程的弹性.
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