大脑抑制控制网络中的白质纤维密度与低活动老年人下降有关
Colin Simon1, David A E Bolton2, James F Meaney3
1Trinity College Institute of Neuroscience and School of Psychology, Trinity College Dublin, Dublin, Ireland.
The European journal of neuroscience
|April 19, 2024
概括
大脑中白质密度较高的大脑中的白质密度较高
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 发动机控制器的控制器
背景情况:
- 与年龄相关的认知能力下降与跌倒有关.
- 运动反应抑制可能会调解这种关系.
- 白质的完整性对于认知和运动功能至关重要.
研究的目的:
- 为了研究白质纤维密度在运动抑制网络和老年人中跌倒之间的联系.
- 探索身体活动在这种关系中的作用.
- 为了检查白质完整性的纵向预测值下跌.
主要方法:
- 在4年内对414名老年人进行了长度研究.
- 扩散张力成像用于测量抑制控制网络中的白质纤维密度.
- 建模自我报告的跌倒频率与白质指标和身体活动水平相比.
主要成果:
- 在截面上,较高的白质纤维密度在右下额和右下thalamic核之间与下降有关.
- 这种特定的连接性并不能预测未来的纵向跌倒.
- 较高的白质纤维密度与较高的跌倒风险有关,但仅在与较低的体力活动相结合时.
结论:
- 白质完整性,体力活动和老年人跌倒之间的关系是复杂的.
- 与落相关的密度增加的反直觉发现需要进一步调查.
- 未来的纵向研究应该探索白质的动态变化及其与摔倒风险相关的身体活动的介导.
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