Supèr Hans, Romeo August
Dept. of Basic Psychology, Faculty of Psychology, University of Barcelona, Spain.
Vision Res. 2014 Dec;105:199-203. doi: 10.1016/j.visres.2014.10.022. Epub 2014 Oct 31.
As a result of the spider experiments in Nagata et al. (2012), it was hypothesized that the depth perception mechanisms of these animals should be based on how much images are defocused. In the present paper, assuming that relative chromatic aberrations or blur radii values are known, we develop a formulation relating the values of these cues to the actual depth distance. Taking into account the form of the resulting signals, we propose the use of latency coding from a spiking neuron obeying Izhikevich's 'simple model'. If spider jumps can be viewed as approximately parabolic, some estimates allow for a sensory-motor relation between the time to the first spike and the magnitude of the initial velocity of the jump.
根据长田等人（2012年）的蜘蛛实验结果，推测这些动物的深度感知机制应基于图像散焦的程度。在本文中，假设相对色差或模糊半径值已知，我们推导了一种将这些线索值与实际深度距离相关联的公式。考虑到所得信号的形式，我们建议使用服从伊兹海克维奇“简单模型”的脉冲神经元的潜伏期编码。如果蜘蛛的跳跃可近似视为抛物线运动，一些估计结果表明，在首次产生脉冲的时间与跳跃初始速度大小之间存在感觉运动关系。
