title: Reaction-time determination of the latency between visual signals generated by rods and cones.
abstract: This paper reports the results of a series of reaction-time measurements in response to light flashes which stimulate preferentially either the rod of the cone receptor mechanisms in human vision. The average response latency between rod- and cone-generated signals as determined from these measurements was found to be 80 ms. Similar response latency values were also obtained from measurements involving only visual responses to real- and apparent-motion stimuli. The results show that the rod-cone response latency, measured by reaction-time or visual methods is relatively constant for target presentation locations between 4 and 9 degrees of visual angle from the fovea along the horizontal.
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D010775:Photic Stimulation / Q000295:instrumentation / Q000379:methods; D010786:Photoreceptor Cells / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology*; D014785:Vision, Ocular / Q000502:physiology*