Sensory and integrative properties of the fast visuomotor system

快速视觉运动系统的感觉和综合特性

• 批准号: RGPIN-2016-04747
• 负责人: Corneil, Brian
• 金额: $ 2.99万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=631506
• 关键词: Sensory; integrative; properties; fast; visuomotor

Humans are largely visual animals; vision is the main sense we use to identify objects of interest in our external world. In order to execute accurate visual actions, visual information from the outside world needs to be rapidly contextualized and integrated with current body posture to generate efficient and appropriate motor commands. Previous research has shown that such contextualization and integration can be carried out remarkably quickly by a fast visuomotor system capable of initiating a movement in less than 150 ms of a visual event (e.g., such as a corrective action to catch a falling cup of water). Precise recordings of neck and limb muscle activity have provided evidence for stimulus-locked responses (SLR), which are small bursts of muscle activity well in advance of movement onset that occur time-locked ~80-100 ms after visual stimuli.

人类在很大程度上是视觉动物；视觉是我们用来识别外部世界中感兴趣的对象的主要感觉。为了执行准确的视觉动作，来自外部世界的视觉信息需要快速地与当前的身体姿势相结合，以产生有效和适当的运动命令。先前的研究已经表明，通过能够在视觉事件(例如，接住掉落的水杯的矫正动作)的少于150ms的时间内启动运动的快速视觉运动系统，可以非常迅速地执行这样的上下文和整合。对颈部和四肢肌肉活动的精确记录为刺激锁定反应(SLR)提供了证据，刺激锁定反应(SLR)是运动开始之前肌肉活动的小爆发，发生在视觉刺激后约80-100ms的时间锁定。