视觉诱导的非自愿的手臂,头部和干运动
Alexandra Martin1, Avijit Bakshi1, Joel Ventura1
1Ashton Graybiel Spatial Orientation Laboratory, MS 033, Brandeis University, 415 South Street, Waltham, MA, 02454, USA.
Experimental brain research
|September 18, 2024
概括
视觉诱导的自旋和移位 (SR&D) 在站立的受试者中引起了显著的无意的手臂偏差. 然而,指向目标可以减少这些偏差,这表明了纠正虚幻自动运动效应的机制.
科学领域:
- 人类运动控制器
- 感知和感官处理是感知和感官处理.
- 垂体和视觉垂体相互作用.
背景情况:
- 虚幻的自我运动,如视觉诱导的自我旋转和位移 (SR&D),可以影响运动反应.
- 手动接下来反应 (MFR) 是一种已知的机制,影响被动手臂控制和目标维护.
- 了解视觉前体信息如何影响身体姿势和手臂运动对于解释感知运动现象至关重要.
研究的目的:
- 为了研究SR&D对站立受试者的手臂,头部和干姿势的影响.
- 检查积极指向目标如何影响SR&D过程中的这些偏差.
- 将观察到的偏差与现有的运动控制模型联系起来,包括MFR和视觉前体收.
主要方法:
- 12名站立的受试者参加了75秒的试验,包括视觉诱导的自我旋转和移位.
- 在"自由"条件下和"工具条件"下评估了手臂运动,受试者持有棍子.
- 当手臂自由伸展或指向特定的目标时,测量了手臂偏差.
主要成果:
- 试验对象在自由条件下显示出明显的非故意的手臂偏差 (平均55°) 与虚幻自动运动相反的方向.
- 指向目标可以将这些手臂偏差减少约80%,这表明了纠正机制.
- 头部和干位置的偏差也发生了,在SR&D的主观经验之前,并且可以通过指针部分纠正.
结论:
- 手动下列响应 (MFR) 机制似乎扩展到SR&D期间的被动臂控制和目标维护.
- 神经通路中的视觉前庭收可能是观察到的身体和手臂偏差的基础.
- 这些发现对在易引起虚幻自动运动和位移的环境中对车辆控制有影响.
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