[Latency of visual evoked responses to diffuse and scanning flashes (author's transl)].

Visual evoked potentials (VEP) were produced in humans (normal and patients) by diffuse and scanning flashes. The responses to both stimulation techniques prove to be similar. Using the flash (or the start of the scanning flash) as trigger reference we find latency differences of the first positive major component P2 about 7 ms. Scanning flash stimulation seems to elicite retinal inhibitory and excitatory processes, comparable to the stimulation effects by diffuse flashes. Following these results the recorded potential is due to space-time-integrating systems related to the fovea and parafovea.