Cross-orientation masking in human color vision

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Cross-orientation masking in human color vision.

Detection of a Gabor pattern is impaired in the presence of a similar pattern of orthogonal orientation, a phenomenon known as cross-orientation masking (XOM). Here we investigate the role of color in cross-orientation masking. We measured contrast detection thresholds to horizontally oriented Gabors overlaid by similar Gabors of a different orientation. Red-green chromatic masking was compared...

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Contrast masking in human vision.

Contrast masking was studied psychophysically. A two-alternative forced-choice procedure was used to measure contrast thresholds for 2.0 cpd sine-wave gratings in the presence of masking sine-wave gratings. Thresholds were measured for 11 masker contrasts spanning three log units, and seven masker frequencies ranging +/- one octave from the signal frequency. Corresponding measurements were made...

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Cross-orientation masking in human color vision: application of a two-stage model to assess dichoptic and monocular sources of suppression.

Cross-orientation masking (XOM) occurs when the detection of a test grating is masked by a superimposed grating at an orthogonal orientation, and is thought to reveal the suppressive effects mediating contrast normalization. Medina and Mullen (2009) reported that XOM was greater for chromatic than achromatic stimuli at equivalent spatial and temporal frequencies. Here we address whether the gre...

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Peeling Plaids Apart: Context Counteracts Cross-Orientation Contrast Masking

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ژورنال

عنوان ژورنال: Journal of Vision

سال: 2009

ISSN: 1534-7362

DOI: 10.1167/9.3.20