大脑血流与站立双重任务的相关性取决于年龄组和认知负载
Azizah J Jor'dan1, Ikechukwu Iloputaife2, Wanting Yu2
1Department of Exercise and Health Sciences, University of Massachusetts Boston, Boston, MA, USA. azizah.jordan@umb.edu.
Scientific reports
|November 29, 2025
概括
衰老会影响大脑的血流如何在认知任务中维持平衡. 脑血流 (CBF) 和姿势控制之间的关系在年轻人和老年人之间有所不同,特别是任务难度增加.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 生物力学 生物力学
背景情况:
- 在认知双重任务期间,有效的姿势控制依赖于调节的大脑血流 (CBF).
- 衰老与双重任务性能和CBF的下降有关.
- 在衰老中,CBF和双任务姿势控制之间的关系还不太清楚.
研究的目的:
- 调查认知双重任务期间CBF和姿势控制之间的相关性.
- 确定年龄是否影响CBF和双任务姿势控制之间的关系.
主要方法:
- 23名年轻人和24名老年人在站立时执行了n-back认知任务 (识别X和2-back).
- 在中脑动脉中测量大脑血流 (CBF),使用跨的多普勒超声波.
- 使用可穿戴运动传感器评估姿势控制,用平衡整合得分 (BIS) 量化认知表现.
主要成果:
- 在Identify X任务中,CBF速度和姿势摆动 (路径长度) 之间的关联因年龄组而异 (p=0.03).
- 在双背任务中,更高的CBF与更大的姿势摆动相关 (p=0.03),老年人表现出更好的认知效率 (较低的BIS) 与更高的CBF.
结论:
- 双任务姿势控制取决于大脑血流 (CBF).
- CBF-姿势控制关系的性质受到参与者的年龄和认知任务难度的影响.
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