title: Magnitude estimation of the brightness of brief foveal stimuli.
abstract: Eighteen observers judged the apparent brightness of light flashes that varied in both duration and luminance. The median numerical estimations (made relative to a standard flash) confirmed three principles: the reciprocity between luminance and duration (Bloch's law), the enhancement of brightness at about 50 milliseconds (Broca-Sulzer effect), and the power-law relation between brightness and energy (Stevens's law).
mesh_terms: D006801:Humans; D008027:Light; D014785:Vision, Ocular; D014796:Visual Perception
keywords: VISUAL PERCEPTION