R
Robert F. Hess
Researcher at McGill University
Publications - 520
Citations - 20366
Robert F. Hess is an academic researcher from McGill University. The author has contributed to research in topics: Contrast (vision) & Spatial frequency. The author has an hindex of 72, co-authored 504 publications receiving 18782 citations. Previous affiliations of Robert F. Hess include University of Melbourne & University College London.
Papers
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Biological motion perception is cue-invariant
TL;DR: Psychophysically, using randomized-polarity and contrast-modulated stimuli, it is shown that detection of second-order biological motion walkers is worse for stimuli defined by second- order cues, but this difference is explained by a difference in visibility of the local motion in the stimuli.
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Binocular combination of second-order stimuli.
TL;DR: Binocular phase combination of second-order stimuli was similar regardless of whether the carriers in the two eyes were correlated, anti-correlated, or uncorrelated, and this suggests that, in normal adults, the binocular phase mixture occurs after the monocular extracting of the second- order modulations.
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Spatial scale invariance of the amblyopic global motion deficit
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What Do Contrast Threshold Equivalent Noise Studies Actually Measure? Noise vs. Nonlinearity in Different Masking Paradigms.
TL;DR: It is found that the loss of sensitivity with increasing spatial frequency results from changes in the saturation constant of the gain control nonlinearity, and that this only masquerades as a change in internal noise under the equivalent noise method.
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Collinear facilitation in color vision.
TL;DR: At the level of collinear facilitation, the chromatic and the achromatic postreceptoral mechanisms have their own spatial interactions that are segregated from one another.