Latency of the steady state visual evoked potential.
A technique has been devised to measure the latency of the steady state evoked potential (EP) to the separate flashes of a flickering light. The steady state method measures the averaged following EP to a flickering light. From the different averaged EP curves resulting from different averaged EP curves resulting from different intervals separating successive flashes, a latency is calculated which can be said to be the latency of a single response to a single flash of light. This latency is shorter for short inter-flash intervals (60-45 msec) than for the long inter-flash intervals (90-105 msec). The average short latency for three subjects was 61 msec and the average long latency 119 msec. These results agree reasonably well with other previous estimates of latency.
D005071:Evoked Potentials; D006801:Humans; D008722:Methods; D010775:Photic Stimulation; D011930:Reaction Time; D014793:Visual Cortex / Q000502:physiology*