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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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Failure of direction identification for briefly presented second-order motion stimuli: evidence for weak direction selectivity of the mechanisms encoding motion.
Timothy Ledgeway,Robert F. Hess +1 more
TL;DR: It is proposed that second-order motion detectors are much less selective for stimulus direction than first- order motion sensors, and thus are more susceptible to the deleterious effects of limiting stimulus duration (which introduces spurious motion in the opposite direction, particularly at low drift rates).
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The selectivity of responses to red‐green colour and achromatic contrast in the human visual cortex: an fMRI adaptation study
TL;DR: The findings of fMRI adaptation support a strong presence of integrated mechanisms for colour and Ach contrast across the visual hierarchy, with a progression towards selective processing in extrastriate visual areas.
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Localization of element clusters: multiple cues.
TL;DR: It was concluded that the cue used varied as the characteristics of the cloud changed and therefore that the visual system is not restricted to the use of a single cue type when localizing object clusters.
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Regional variation of contrast sensitivity across the retina of the achromat: sensitivity of human rod vision.
TL;DR: The contention that the typical and complete achromat is a functional rod monochromat is supported and hence can be used to explore the sensitivity of the isolated rod post‐receptoral mechanism under mesopic conditions where its sensitivity is optimal.
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A Robust and Reliable Test to Measure Stereopsis in the Clinic.
Robert F. Hess,Rifeng Ding,Simon Clavagnier,Catherine Liu,Cindy X. Guo,Catherine Viner,Brendan T. Barrett,Krupali Radia,Jiawei Zhou +8 more
TL;DR: A convenient test of stereopsis in the clinic that is both robust and reliable and capable of providing a measure of variability necessary to make valid comparisons between measurements obtained at different occasions or under different conditions is developed.