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Spatial and temporal aspects of oculomotor inhibition as revealed by saccade trajectories

McSorley, E., Haggard, P. and Walker, R. (2005) Spatial and temporal aspects of oculomotor inhibition as revealed by saccade trajectories. Vision Research, 45 (19). pp. 2492-2499. ISSN 0042-6989

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To link to this article DOI: 10.1016/j.visres.2005.04.012

Abstract/Summary

The spatial and temporal effect of distractor related inhibition on stimulus elicited (reflexive) and goal driven (voluntary) saccades, was examined using saccade trajectory deviations as a measure. Subjects made voluntary and reflexive saccades to a target location on the vertical midline, while the distance of a distractor from the target was systematically manipulated. The trajectory curvature of both voluntary and reflexive saccades was found to be subject to individual differences. Saccade curvature was found to decrease monotonically with increasing distractor distance from target for some subjects while for others no reduction in curvature or even an increase was found. These results could not be explained by latency differences or landing position effects. The different patterns of distractor effects on saccade trajectories suggest the additional influence of a non-spatial inhibitory mechanism. (c) 2005 Elsevier Ltd. All rights reserved.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Psychology and Clinical Language Sciences
ID Code:13938
Uncontrolled Keywords:saccade, curvature, trajectory, superior colliculus, salience map, FRONTAL EYE-FIELD, EXTENDED FIXATION ZONE, SUPERIOR COLLICULUS, TARGET, SELECTION, CURVATURE, ATTENTION, MOVEMENTS, MONKEY, RETURN, GENERATION

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