用于鼠标导航的视觉处理双流假说。

Two stream hypothesis of visual processing for navigation in mouse.

机构信息

UCL Institute of Behavioural Neurosciences, Department of Experimental Psychology, University College London, London, WC1H 0AP, UK.

出版信息

Curr Opin Neurobiol. 2020 Oct;64:70-78. doi: 10.1016/j.conb.2020.03.009. Epub 2020 Apr 12.

Abstract

Vision research has traditionally been studied in stationary subjects observing stimuli, and rarely during navigation. Recent research using virtual reality environments for mice has revealed that responses even in the primary visual cortex are modulated by spatial context - identical scenes presented in different positions of a room can elicit different responses. Here, we review these results and discuss how information from visual areas can reach navigational areas of the brain. Based on the observation that mouse higher visual areas cover different parts of the visual field, we propose that spatial signals are processed along two-streams based on visual field coverage. Specifically, this hypothesis suggests that landmark related signals are processed by areas biased to the central field, and self-motion related signals are processed by areas biased to the peripheral field.

摘要

视觉研究传统上一直针对观察刺激的静止主体进行研究,而很少在导航过程中进行。最近,使用虚拟现实环境对老鼠进行的研究表明,即使在初级视觉皮层中,响应也会受到空间背景的调制——在房间的不同位置呈现相同的场景可以引起不同的反应。在这里,我们回顾这些结果,并讨论视觉区域的信息如何到达大脑的导航区域。基于观察到老鼠的高级视觉区域覆盖了不同的视野部分,我们提出空间信号是基于视野覆盖范围沿着两条路径进行处理的。具体来说,该假说表明,与地标相关的信号由偏向于中央视野的区域处理,而与自身运动相关的信号由偏向于外周视野的区域处理。

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