To M P S, Regan B C, Wood Dora, Mollon J D
Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3EG, UK.
Vision Res. 2011 Jan;51(1):203-14. doi: 10.1016/j.visres.2010.11.008. Epub 2010 Nov 17.
The margin of the temporal visual field lies more than 90° from the line of sight and is critical for detecting incoming threats and for balance and locomotive control. We show (i) contrast sensitivity beyond 70° is higher for moving stimuli than for stationary, and in the outermost region, only moving stimuli are visible; (ii) sensitivity is highest for motion in directions near the vertical and horizontal axes and is higher for forward than for backward directions; (iii) the former anisotropy arises early in the visual pathway; (iv) thresholds for discriminating direction are lowest for upward and downward motion.
颞侧视野边缘与视线的夹角超过90°，对于检测来袭威胁以及平衡和运动控制至关重要。我们发现：（i）在70°以外，移动刺激的对比敏感度高于静止刺激，并且在最外侧区域，只有移动刺激可见；（ii）垂直和水平轴附近方向的运动敏感度最高，向前方向的敏感度高于向后方向；（iii）前者的各向异性在视觉通路中早期就出现；（iv）向上和向下运动的方向辨别阈值最低。
