Visual scotoma and visual afterimages: some evidence that the perceived visual afterimage may not be a purely retinal phenomenon: a single case study.
Observations of the differential appearance and behaviour of a deliberately induced visual scotoma and a patterned visual afterimage are reported. Although a retinal scotoma behaves like a visual afterimage in some ways, there are sufficient differences to suggest that the perceived visual afterimage may not be just the simple consequence of prolonged retinal stimulation.
Davies
P
P
Department of Psychology, University of Leeds, England. peterd@psychology.leeds.ac.uk
D000360:Afterimage / Q000502:physiology*; D005133:Eye Movements / Q000502:physiology; D005366:Figural Aftereffect / Q000502:physiology*; D006801:Humans; D008297:Male; D009898:Optic Disk / Q000502:physiology*; D011601:Psychophysics; D012160:Retina / Q000502:physiology*