Figure 5: Cellular-resolution optogenetic ‘retinal stimulation fields’.
From: Holographic optogenetic stimulation of patterned neuronal activity for vision restoration

(a) Fluorescent image of retina and multielectrode array (black dots) with superposed distribution of SFs (estimated using spike-triggered averaging of pseudo-random holographic patterns with 20 spots each). Scale bar, 200 μm (b,c) Examples where retinal SFs match (b) or do not correspond to (c) visualized ChR2-eYFP-expressing RGCs. Scale bars, 20 μm (d) Mean SF spatial distribution (n=202 units from 11 retinas). Scale bar, 50 μm.