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. 2015 Jul 1;114(3):1606–1616. doi: 10.1152/jn.00484.2015

Fig. 2.

Fig. 2.

Basic light responses of wiry amacrine cells. A: Voltage responses of an ON-type and an OFF-type wiry amacrine cell to a 0.5-s, +100% contrast spot centered on the soma. Inset, 60-ms region of peak OFF cell response exhibiting high-frequency spikelets riding on top of a sustained depolarization. B: responses of cells in A to a −100% contrast spot. Inset, 60-ms region of peak ON cell response exhibiting spikelets. C: voltage response in an ON-type wiry cell to a 0.5-s family of 11 injected currents (50-pA increments from −200 pA to +300 pA). D: linear filters of ON and OFF wiry cells calculated with full-field Gaussian noise. E: nonlinear input-output functions for cells in D. F: kinetic properties derived from temporal filters of 7 ON wiry cells, 4 OFF wiry cells, 6 ON parasol cells, and 3 OFF parasol cells. Error bars denote mean and SD. Left: time to filter peak for the temporal filters in milliseconds. A smaller value indicates more brisk kinetics. Center: time to zero crossing of the temporal filter in milliseconds. A smaller value indicates more transient kinetics. Right: biphasic index of temporal filters. This value is the trough divided by the peak of the temporal filter.