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Author Ellemberg, Dave ♦ Hess, Robert F. ♦ Arsenault, A. Serge
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Lateral Interaction ♦ Anisometropic Amblyopes ♦ Perceived Contrast ♦ Strabismic Amblyopes ♦ Local Contrast Gain Control ♦ Equivalent Amount ♦ Anomalous Contrast Perception ♦ Horizontal Array ♦ Normal Vision ♦ Spatial Distortion ♦ Lateral Neural Interaction ♦ Positional Sensitivity ♦ Test Stimulus ♦ Amblyopic Eye ♦ Observed Anomaly ♦ Neighboring Gabor ♦ Normal Eye ♦ Spatial Frequency ♦ Strabismic Am-blyopes ♦ Lateral Contrast Information
Abstract We studied lateral neural interactions in strabismic (n 6) and anisometropic amblyopes (n 3) by measuring reductions in the perceived contrast of a foveally viewed Gabor centred in a horizontal array of closely neighboring Gabors. Strabismic amblyopes, but not anisometropic amblyopes, failed to show the reduction in perceived contrast typical of normal vision [J. Opt. Soc. Amer. A 15 (1998) 1733] when lateral contrast information is available at the same orientation and spatial frequency. The strabismic am-blyopes also severely misperceive the regularity of the array of Gabors flanking the test stimulus. A normal eye could model the anomalous contrast perception of the amblyopic eye, by adding an equivalent amount of spatial distortion to the stimulus. The relationship between the observed anomalies for local contrast gain control and positional sensitivity is discussed.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Publisher Date 2001-01-01