A unified model for the combined temporal and spatial Broca-Sulzer effect.
A briefly pulsed light is brighter than a pulse of longer duration. For a brief flash of fixed duration and small area, enlarging a target results initially in an increase in brightness. Beyond some critical area, the target dims with further increases in size. These two phenomena are the temporal and the spatial Broca-Sulzer effect respectively. Each effect can be modeled using a generalization of the Hartline-Ratliff equation. The resulting analysis produces a mathematically unified treatment of both effects.
D006801:Humans; D008027:Light; D008959:Models, Neurological; D008960:Models, Psychological; D010775:Photic Stimulation; D011601:Psychophysics; D012160:Retina / Q000502:physiology; D013997:Time Factors; D014796:Visual Perception / Q000502:physiology*