在65毫秒内完成:表达 rhesus macaques 上肢肌肉中的视觉运动反应
Aaron L Cecala1,2, Rebecca A Kozak3, J Andrew Pruszynski1,2
1Department of Physiology and Pharmacology, Western University, London, Ontario N6A 5B7, Canada.
eNeuro
|July 28, 2023
概括
非人类灵长类动物表现出类似于人类的快速表达视觉运动反应,在视觉目标呈现后65毫秒内. 这一发现表明,皮质下路径可能对快速视觉引导的触摸至关重要.
科学领域:
- 神经科学是一个神经科学.
- 发动机控制器的控制器
- 灵长类动物研究研究
背景情况:
- 大脑快速将视觉信息转化为行动的能力对于像视觉引导伸手这样的任务至关重要.
- 在人类中,表达视觉运动反应在100毫秒内启动肌肉活动,这表明由于有限的皮质处理时间,皮质下途径是有限的.
研究的目的:
- 调查非人类灵长类动物 (NHPs) 是否表现出与人类观察到的类似的视觉运动反应.
- 为未来的比较研究建立NHP视觉运动转换的基准.
主要方法:
- 两只雄性被训练在一个视觉指导的达到任务,旨在引起表达视觉运动反应.
- 在任务期间,从三角形肌肉中获得了肌肉内记录.
- 用行为范式的变化来评估响应属性.
主要成果:
- NHPs表现出明显的视觉运动反应,平均发病时间为65ms (范围:48-91ms) 的目标后呈现.
- 响应大小与更短的到达延迟相关,但时间与反应时间没有共同变化.
- 背景因素可以调节响应的大小,尽管具有相当大的变化.
结论:
- 在NHP中表达视觉运动反应的特性与在人类中发现的非常相似.
- 这些发现支持皮下途径在快速视觉运动转换中发挥的作用.
- 这项研究为未来的研究提供了基础,比较皮质和皮质下对在时间限制下达到的贡献.
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