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Response latency of brisk‐sustained (X) and brisk‐transient (Y) cells in the cat retina

1. Several methods for evaluating light‐evoked response latency and its variability in brisk‐sustained (X) and brisk‐transient (Y) retinal ganglion cells were tested. The most accurate procedure proved to be that described by Levick (1973), in which the time of the occurrence of the fourth impulse after stimulus onset is taken as an estimate of the latency.