通过虚拟现实揭示的宽容轻度认知障碍的自我中心空间记忆缺陷:横截面研究
Cosimo Tuena1,2, Silvia Serino3, Chiara Stramba-Badiale2
1Department of Theoretical and Applied Sciences, eCampus University, Novedrate, Italy.
JMIR aging
|February 25, 2026
概括
患有轻度认知障碍的个体在自我中心和异心空间记忆方面都表现出缺陷. 使用虚拟现实的自我中心空间记忆错误是阿尔茨海默病诊断的敏感预测因素.
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:
- 空间导航依赖于自我中心和非中心的参考框架.
- 由于海马的参与,阿尔茨海默病 (AD) 严重损害了非中心导航.
- 在AD早期阶段,自我中心的表现的作用是不太了解的.
研究的目的:
- 通过虚拟现实来研究在记忆缓和认知障碍 (aMCI) 中的空间记忆表现.
- 评估自我中心与非中心的暗示可用性对空间记忆回忆的影响.
- 为了确定潜在的数字生物标志物用于早期AD检测.
主要方法:
- 80名参与者 (40名MCI,40名健康对照[HC]) 完成了一个虚拟现实对象位置记忆任务.
- 通过使用离散的地标 (自我中心) 或环境边界 (偏心) 线索来测试回忆.
- 分析了导航路径和响应坐标,以评估空间战略.
主要成果:
- 与HC相比,aMCI的参与者表现出明显较差的空间记忆,而不论空间参考框架.
- 虚拟现实中的自我中心空间错误预测了MCI诊断.
- aMCI患者在回忆过程中表现出改变的导航模式和不那么有效的提示利用.
结论:
- 自我中心的空间记忆障碍存在于阿尔茨海默病早期,并补充了已知的偏心缺陷.
- 空间认知系统的双重损伤为MCI中的导航困难提供了洞察力.
- 基于虚拟现实的自我中心空间记忆任务显示出作为AD敏感数字生物标志物的承诺.
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