title: Visual processing of simultaneously presented peripheral and foveal stimuli.
abstract: Results are reported for an experiment in which subjects were required to detect simple stimuli presented tachistoscopically to the periphery and/or fovea. Three modes of stimulus presentation were employed: an SMf mode in which foveal stimuli were presented alone; an SMp mode in which peripheral stimuli were presented alone; and an SIMfp mode in which peripheral stimuli were presented simultaneously. Stimulus detection was significantly better under SMf and SMp modes of presentation than under an SIMfp mode of presentation. Results are discussed in terms of a limited-capacity attentional model in which selective factors operate in the initial processing of visual stimuli and prior to short-term memory.
mesh_terms: D001288:Attention; D004192:Discrimination, Psychological; D005584:Fovea Centralis; D006801:Humans; D007257:Information Theory; D008266:Macula Lutea; D008297:Male; D008570:Memory, Short-Term; D010775:Photic Stimulation; D014794:Visual Fields; D014796:Visual Perception