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FURTHER STUDIES OF PATTERN PERCEPTION AND A STABILIZED RETINAL IMAGE: THE USE OF PROLONGED AFTER‐IMAGES TO ACHIEVE PERFECT STABILIZATION
Author(s) -
EVANS C. R.
Publication year - 1967
Publication title -
british journal of psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.536
H-Index - 92
eISSN - 2044-8295
pISSN - 0007-1269
DOI - 10.1111/j.2044-8295.1967.tb01088.x
Subject(s) - unitary state , perception , psychology , retinal , orientation (vector space) , arc (geometry) , image (mathematics) , cognitive psychology , visual perception , communication , artificial intelligence , pattern recognition (psychology) , computer vision , neuroscience , mathematics , computer science , ophthalmology , geometry , medicine , political science , law
A technique to allow the study of prolonged after‐images as perfectly stabilized retinal images is described. A simple model to account for the variability of unitary or fragmentary disappearance of stabilized images is proposed and tested. Results suggest the presence of recognition units mediating the perception of straight lines which vary in size from approximately 30 to 90 min arc in the human fovea and perifovea. These units appear to be arrayed independently of orientation, and may be primarily represented in the cortex. A reappraisal of the methodology and theoretical significance of stabilization studies is attempted.