运动体形对成像策略的影响在人体内皮层内大脑与计算机接口的成功
N G Kunigk1,2,3, H R Schone1,4, C Gontier1,4
1Rehab Neural Engineering Labs, University of Pittsburgh, Pittsburgh, PA, United States of America.
Journal of neural engineering
|February 24, 2025
概括
电极阵列在运动皮层中的位置会影响大脑与计算机接口的控制. 介面阵列更好地捕捉近端手臂运动,而侧面阵列在远端运动中表现出色,影响控制策略.
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
- 康复医学 康复医学 康复医学
背景情况:
- 关于体型组织的运动皮层的传统观点正在重新评估,新出现的证据表明运动的控制更加分散.
- 这种不断发展的理解对在皮质内脑-计算机接口 (iBCI) 中最佳放置电极阵列具有关键意义.
- 研究神经记录位置和运动表示之间的关系对于推进iBCI技术至关重要.
研究的目的:
- 为了确定神经记录在前中心环中的体位位置是否会影响iBCI控制的成像策略的有效性.
- 评估电极阵列放置对不同运动类型的解码精度的影响.
主要方法:
- 三名脊髓损伤患者参加了一项iBCI临床试验.
- 在功能成像的基础上,在前中心环中植入了皮层内微电极阵列.
- 在尝试手,手腕,肘部和肩部运动时记录了神经数据.
主要成果:
- 与横向阵列相比,位于中间的阵列对近接手臂运动 (肘部,肩膀) 的活性显著更高.
- 侧向阵列捕获了更多与远端手臂运动 (手,手腕) 相关的活动.
- 图像策略显著影响了每个数组对解码精度的贡献,用于翻译和掌握任务.
结论:
- 运动皮层中的体形对iBCI性能和用户控制策略有明显影响.
- 神经记录的空间组织影响可以解码的运动信息类型.
- 在规划iBCI植入时考虑体质学是最大限度地提高器件疗效的关键.
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