边缘白质对患有多发性硬化症的老年人口语记忆的缓和作用
Daliah Ross1, Mark E Wagshul2, Frederick W Foley1
1Ferkauf Graduate School of Psychology, Yeshiva University.
Neuropsychology
|July 24, 2025
概括
患有多发性硬化症 (MS) 的老年人经历了与白质损伤相关的语言记忆的下降. 具体来说,减少白质完整性和增加关键脑道的病变会影响MS患者的回忆力.
科学领域:
- 神经科学是一个神经科学.
- 神经学 神经学
- 认知心理学 认知心理学
背景情况:
- 多发性硬化症 (MS) 是一种影响白质的慢性神经疾病.
- 语言记忆力下降是衰老的一个常见问题,特别是在多发性硬化症患者中.
- 有限的研究存在于老年人与MS的语言记忆的特定的大脑结构相关的.
研究的目的:
- 研究白质微观结构和宏观结构之间的关系,以及老年人与没有MS的口头记忆表现.
- 为了确定白质完整性和病变负载是否适度MS对口头记忆的影响.
主要方法:
- 评估了64名患有多发性硬化症的老年人和72名对照人群.
- 使用霍普金斯口语学习检测修订 (HVLT-R) 测量了口语记忆.
- 使用MRI (dMRI和FLAIR) 量化了白质完整性 (微分异型) 和病变体积.
主要成果:
- 与对照组相比,患有多发性硬化症 (OAMS) 的老年人表现出较低的即时和延迟口头回忆.
- 在OAMS中,更低的回忆率与特定路径 (,未结,腹环膜) 中较高的白质病变体积有关.
- 在右腹带环中减少的分数异质性与OAMS中较低的延迟回忆有关.
结论:
- 白质的微观结构和宏观结构完整性对于患有多发性硬化症的老年人口语记忆至关重要.
- 与MS相关的口头记忆缺陷部分可以通过边缘白质道的干扰来解释.
- 这些发现突出了特定白质损伤对MS老化中的认知功能的影响.
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