Journal article

Publication year: 2001

Pages: 2282-2296

Journal: Journal of the Optical Society of America A Optics, Image Science and Vision

Volume number: 18

Issue number: 9

ISSN: 0740-3232

DOI Link: https://doi.org/10.1364/JOSAA.18.002282

Publisher: Optica Publishing Group

Abstract: 
We studied smooth-pursuit eye movements elicited by first- and second-order motion stimuli. Stimuli were random dot fields whose contrast was modulated by a Gaussian window with a space constant of 0.5 degrees. For the first-order stimuli, the random dots simply moved across the screen at the same speed as the window; for the second-order stimuli the window moved across stationary or randomly flickering dots. Additional stimuli which combined first- and second-order motion cues were used to determine the degree and type of interaction found between the two types of motion stimuli. Measurements were made at slow (1 degrees /s) and moderate (6 degrees /s) target speeds. At a velocity of 1 degrees /s the initiation, transition, and steady-state phases of smooth pursuit in response to second-order motion targets are severely affected when compared with the smooth pursuit of first-order motion targets. At a velocity of Vs there is a small but significant deficit in steady-state pursuit of second-order motion targets but not much effect on pursuit initiation. (C) 2001 Optical Society of America.

Harvard Citation style: Hawken, M. and Gegenfurtner, K. (2001) Pursuit eye movements to second-order motion targets, Journal of the Optical Society of America A Optics, Image Science and Vision, 18(9), pp. 2282-2296. https://doi.org/10.1364/JOSAA.18.002282

APA Citation style: Hawken, M., & Gegenfurtner, K. (2001). Pursuit eye movements to second-order motion targets. Journal of the Optical Society of America A Optics, Image Science and Vision. 18(9), 2282-2296. https://doi.org/10.1364/JOSAA.18.002282