BINOCULAR MASKING LEVEL DIFFERENCES IN SINUSOIDAL GRATING DETECTION

Authors
  1. Henning, G.B.
  2. Hertz, B.G.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Cambridge Univ, Cambridge (England) Psychological Lab
Abstract
Observers were required to detect sinusoidal gratings in a background of noise composed of a narrow band of spatial frequencies centred on the frequency of the grating to be detected. The visual noise was identical in two fields, one for each eye. The grating to be detected--the signal grating--was presented in one of two conditions: either the signal grating was identical in both fields or 180 out-of-phase; that is, with the dark bars in one field in locations corresponding to the locations for light bars in the other. Signal gratings of low spatial frequency presented out-of-phase were detected at much lower contrast than in-phase gratings. The difference in detectability with vertical gratings, approx. 0.6 log units of contrast, was at least as large with horizontal gratings.
Report Number
RP-934 — Research Paper
Date of publication
01 Jan 1973
Number of Pages
9
Reprinted from
Vision Res, vol 13, 1973, p 2455-2463
DSTKIM No
74-03152
CANDIS No
22827
Format(s):
Hardcopy

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