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. Author manuscript; available in PMC: 2012 Sep 10.
Published in final edited form as: Vis Neurosci. 2011 Mar 25;28(3):183–192. doi: 10.1017/S0952523811000071

Fig. 1.

Fig. 1

Response of an ON bipolar cell to a contrast step of variable diameter (A) and variable inner diameter of a concentric annulus (B). Dimensions in microns are shown above each response. The 100-µm spot and all other stimuli are centered in the receptive field. The contrast step is 0.3 log unit, that is, two times greater than the steady background of 20 cd/m2. (C) Response to a sinusoidal modulation of 80% at a frequency of 3 Hz and diameter of 240 µm.