Phase discrimination in chromatic compound gratings.
Phase discrimination thresholds were measured for yellow/green isoluminant and non-isoluminant compound gratings in which the amplitude of the two components (f and 3f) was twice the detection threshold. The phase discrimination threshold at isoluminance was worse than in all the other conditions, which gave broadly similar threshold data. It is suggested that this is due to a positional uncertainty in the neural representation of the isoluminant stimuli.
Troscianko
T
T
Universitäts-Augenklinik, Tübingen, F.R.G.
Harris
J
J
D015350:Contrast Sensitivity; D004192:Discrimination, Psychological / Q000502:physiology; D005556:Form Perception; D006801:Humans; D008163:Luminescent Measurements; D010364:Pattern Recognition, Visual / Q000502:physiology; D012684:Sensory Thresholds; D014792:Visual Acuity; D014794:Visual Fields