从中风前和后的运动区域的局部场潜力解码单颗粒检索任务:对半球间连接差异的洞察
IEEE transactions on bio-medical engineering
|March 3, 2025
概括
这项研究表明,中风影响的大脑区域的局部场潜力 (LFP) 可以高精度解码运动任务. 高马频段是大脑机器接口 (BMI) 中运动功能的恢复的关键.
科学领域:
- 神经科学是一个神经科学.
- 生物医学工程 生物医学工程
- 康复科学 康复科学 康复科学
背景情况:
- 皮层内脑机界面 (iBMIs) 提供了恢复中风幸存者的功能潜力.
- 使用局部场势 (LFP) 解码运动任务对iBMIs来说是有前途的.
- 有限的研究存在于使用从中风受影响的大脑区域的LFP来解码.
研究的目的:
- 调查使用健康和中风影响的皮质前肢区域 (CFAs) 的LFPs来解码单颗粒检索 (SPR) 任务的可行性.
- 在中风前后条件下分析LFP解码性能.
- 为了检查中风后的半球间连接性变化.
主要方法:
- 在使用微电极阵列执行SPR任务的老鼠中记录了CFAs的LFPs.
- 应用相对光谱功率 (PS) 方法用于频率分析.
- 使用随机森林分类来进行任务与静止状态差异化.
- 评估半球间连接性 (相关性,连贯性,PAC).
主要成果:
- 在使用LFP和相对PS方法的中风后SPR解码中获得了87.10%±9.2%的准确性.
- 确定高马频段对于中风后电机解码至关重要.
- 在SPR任务中,在中风后半球之间观察到相幅度合 (PAC) 的显著变化.
结论:
- 来自中风影响的大脑区域的LFP可用于iBMIs中的解码运动任务.
- 高马波段活动对于中风后的运动功能恢复至关重要.
- 这项研究为开发中风后与SPR相关的BMI提供了基础的见解.
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