Journal article

Publication year: 2009

Pages: 2317-2327

Journal: Journal of Neurophysiology

Volume number: 101

Issue number: 5

ISSN: 0022-3077

DOI Link: https://doi.org/10.1152/jn.91248.2008

Publisher: American Physiological Society

Abstract: 

Recently we showed that sensitivity for chromatic-and high-spatial frequency luminance stimuli is enhanced during smooth-pursuit eye movements (SPEMs). Here we investigated whether this enhancement is a general property of slow eye movements. Besides SPEM there are two other classes of eye movements that operate in a similar range of eye velocities: the optokinetic nystagmus (OKN) is a reflexive pattern of alternating fast and slow eye movements elicited by wide-field visual motion and the vestibulo-ocular reflex (VOR) stabilizes the gaze during head movements. In a natural environment all three classes of eye movements act synergistically to allow clear central vision during self-and object motion. To test whether the same improvement of chromatic sensitivity occurs during all of these eye movements, we measured human detection performance of chromatic and luminance line stimuli during OKN and contrast sensitivity during VOR and SPEM at comparable velocities. For comparison, performance in the same tasks was tested during fixation. During the slow phase of OKN we found a similar enhancement of chromatic detection rate like that during SPEM, whereas no enhancement was observable during VOR. This result indicates similarities between slow-phase OKN and SPEM, which are distinct from VOR.

Harvard Citation style: Schütz, A., Braun, D. and Gegenfurtner, K. (2009) Chromatic Contrast Sensitivity During Optokinetic Nystagmus, Visually Enhanced Vestibulo-ocular Reflex, and Smooth Pursuit Eye Movements, Journal of Neurophysiology, 101(5), pp. 2317-2327. https://doi.org/10.1152/jn.91248.2008

APA Citation style: Schütz, A., Braun, D., & Gegenfurtner, K. (2009). Chromatic Contrast Sensitivity During Optokinetic Nystagmus, Visually Enhanced Vestibulo-ocular Reflex, and Smooth Pursuit Eye Movements. Journal of Neurophysiology. 101(5), 2317-2327. https://doi.org/10.1152/jn.91248.2008