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THE INFLUENCE OF TEMPORAL FREQUENCY AND WAVELENGTH ON BETA MOVEMENT
Author(s) -
Buckingham Terry
Publication year - 1987
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/j.1475-1313.1987.tb00984.x
Subject(s) - monochromatic color , physics , luminance , wavelength , beta (programming language) , arc (geometry) , displacement (psychology) , optics , mathematics , psychology , geometry , computer science , psychotherapist , programming language
—The maximum displacement threshold for beta (apparent) movement was determined using small near‐monochromatic stimuli subtending 2 min arc, over the frequency range 1.67–6.67 Hz. Displacement thresholds for the apparently oscillating spot were dependent upon both temporal frequency (F (9,903) = 1413) and wavelength (F (12,903) = 19.6), the stimuli having been equated for luminance. Significant interaction effects (F (108,903) = 3.32) demonstrated that the influence of colour varied with temporal frequency. It is suggested that short‐range apparent movement over this frequency range may be mediated by a mechanism which is colour dependent.