title: Flicker photometry: residual minimum flicker.
abstract: We show that when all possible optical artifacts are eliminated in a flicker photometric procedure, there is still a residual minimum flicker after color fusion occurs. Our stimuli were alternated with approximately rectangular pulses; we obtained results contrary to those of a previous report in which the stimuli were alternated sinusoidally. In a subsidiary test using a computer-generated cosine wave on a RGB monitor, one observer perceived no residual flicker but a second observer did.
mesh_terms: D000328:Adult; D003118:Color Perception / Q000502:physiology*; D005260:Female; D005425:Flicker Fusion / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010783:Photometry / Q000295:instrumentation / Q000379:methods*