AB074. Link between interocular correlation sensitivity and stereoscopic vision
Brain and Perception

AB074. Link between interocular correlation sensitivity and stereoscopic vision

Alexandre Reynaud, Robert F. Hess

Department of Ophthalmology, McGill Vision Research, McGill University, Montréal, QC, Canada


Background: Stereoscopic Vision uses the disparity between the two images received by the two eyes in order to create a tridimensional representation. With this study, we aimed at providing an estimate of binocular vision at a level prior to disparity processing. In particular, we wanted to assess the spatial properties of the visual system for detecting interocular correlations (IOC).

Methods: We developed dichoptic stimuli, made of textures which IOC is sinusoidally modulated at various correlation spatial frequencies. Then, we compared the sensitivity to these stimuli to the sensitivity to analogous stimuli with disparity modulation.

Results: We observed that IOC sensitivity presents a low-pass/band-pass profile and increases as a function of presentation duration and contrast, in a similar way as disparity sensitivity.

Conclusions: IOC sensitivity is weakly—though significantly—correlated with disparity sensitivity in the general population, which suggests that it could provide a marker for binocular vision, prior to disparity processing.

Keywords: Binocular vision; interocular correlation (IOC); stereoscopy; psychophysics


doi: 10.21037/aes.2018.AB074
Cite this abstract as: Reynaud A, Hess RF. Link between interocular correlation sensitivity and stereoscopic vision. Ann Eye Sci 2018;3:AB074.