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Full-Text Articles in Social and Behavioral Sciences
Motion Streaks In Fast Motion Rivalry Cause Orientation-Selective Suppression, Deborah Apthorp, Peter Wenderoth, David Alais
Motion Streaks In Fast Motion Rivalry Cause Orientation-Selective Suppression, Deborah Apthorp, Peter Wenderoth, David Alais
Faculty of Health and Behavioural Sciences - Papers (Archive)
We studied binocular rivalry between orthogonally translating arrays of random Gaussian blobs and measured the strength of rivalry suppression for static oriented probes. Suppression depth was quantified by expressing monocular probe thresholds during dominance relative to thresholds during suppression. Rivalry between two fast motions or two slow motions was compared in order to test the suggestion that fast-moving objects leave oriented "motion streaks" due to temporal integration (W. S. Geisler, 1999). If fast motions do produce motion streaks, then fast motion rivalry might also entail rivalry between the orthogonal streak orientations. We tested this using a static oriented probe that …
Tilt Aftereffects And Tilt Illusions Induced By Fast Translational Motion: Evidence For Motion Streaks, Deborah Apthorp, David Alais
Tilt Aftereffects And Tilt Illusions Induced By Fast Translational Motion: Evidence For Motion Streaks, Deborah Apthorp, David Alais
Faculty of Health and Behavioural Sciences - Papers (Archive)
Fast-moving visual features are thought to leave neural 'streaks' that can be detected by orientation-selective cells. Here, we tested whether 'motion streaks' can induce classic tilt aftereffects (TAEs) and tilt illusions (TIs). For TAEs, participants adapted to random arrays of small Gaussian blobs drifting at 9.5 deg/s. Following adaptation to directions of 15, 30, 45, 60, 75, and 90 degrees (clockwise from vertical) subjective vertical was measured for a briefly presented test grating. For TIs, the same motions were presented in an annular surround and subjective vertical was measured for a simultaneously presented central grating. All motions were 50% coherent, …