A computational model of stereoscopic prey capture in praying mantises
Fig 6
The image shows left- and right-eye receptive fields, superimposed and backprojected onto a screen at 10cm distance for ease of comparison with the stimuli.
The left- and right-eye receptive fields have identical structures, with a central strongly excitatory region (blue) surrounded by an outer, more weakly excitatory region (purple), and then by a much larger inhibitory region (pink). The receptive fields in the two eyes appear offset horizontally on the screen by the screen disparity d = 15.4°.