Visual search: eye movements and peripheral vision.
The visual search task allows investigation of the way in which central processes can influence the programming of saccadic eye movements. In this paper, a simple search task is studied in which a target is presented in a ring-shaped display of eight stimuli. The subject is required to locate the target with a saccadic eye movement. Targets were colored disks and the task was to search for a target of a particular color. Sensory factors (when all nontargets are identical, the target stands out) and central factor (prespecification of the target) both contribute to search efficiency. When the display contains a double target, saccades sometimes land at an intermediate position between the two targets. This shows that the signal delivered by the search procedure is not necessarily highly localized.
Findlay
J M
JM
Department of Psychology, University of Durham, England.
D000328:Adult; D003118:Color Perception / Q000502:physiology*; D005133:Eye Movements / Q000502:physiology*; D006801:Humans; D012438:Saccades / Q000502:physiology; D014785:Vision, Ocular / Q000502:physiology*