皮质厚度,体积和记忆性能对年龄差异的神经恢复场景信息的影响
Joshua M Olivier1,2, Sabina Srokova3,4, Paul F Hill3,4
1Center for Vital Longevity, University of Texas at Dallas, 1600 Viceroy Dr., Suite 800, Dallas, TX 75235, United States.
Cerebral cortex (New York, N.Y. : 1991)
|August 22, 2025
概括
年长的成年人显示神经恢复较弱的场景, 与关键脑区的皮质体积减少有关. 这种体积差异解释了与年龄相关的记忆恢复下降.
科学领域:
- 神经科学
- 认知心理学
- 神经成像
背景情况:
- 在老年人中,神经恢复 - - 一种对情节性记忆的测量 - - 较弱,
- 与年龄相关的认知衰退与皮质厚度和体积的减少有关.
研究的目的:
- 研究皮质体积,皮质厚度,年龄和与场景相关的神经恢复之间的关系.
- 检查参与场景处理的特定大脑区域中的这些关系:近海马位区域 (PPA),中位区域 (MPA) 和位区域 (OPA).
主要方法:
- 分析了健康年轻人和老年人的功能磁共振成像 (fMRI) 数据.
- 在场景图像的源记忆测试中,从fMRI数据计算出恢复指数.
- 使用多重回归分析来评估年龄,皮质厚度和皮质体积对现场恢复的影响.
主要成果:
- 在神经恢复,皮质厚度和皮质体积方面观察到显著的年龄差异.
- 皮质体积在PPA和MPA中完全介导了年龄对神经恢复的影响.
- 在PPA中恢复强度预测源记忆性能,不论年龄和皮质体积如何.
结论:
- 与年龄相关的场景恢复差异是由特定大脑区域内皮质体积的减少介导的.
- 皮质体积和记忆性能与神经恢复强度的不同方面有关,突出显示了老化记忆中的复杂相互作用.
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