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The parallel programming of voluntary and reflexive saccades

Walker, R. and McSorley, E. (2006) The parallel programming of voluntary and reflexive saccades. Vision Research, 46 (13). pp. 2082-2093. ISSN 0042-6989

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To link to this article DOI: 10.1016/j.visres.2005.12.009

Abstract/Summary

A novel two-step paradigm was used to investigate the parallel programming of consecutive, stimulus-elicited ('reflexive') and endogenous ('voluntary') saccades. The mean latency of voluntary saccades, made following the first reflexive saccades in two-step conditions, was significantly reduced compared to that of voluntary saccades made in the single-step control trials. The latency of the first reflexive saccades was modulated by the requirement to make a second saccade: first saccade latency increased when a second voluntary saccade was required in the opposite direction to the first saccade, and decreased when a second saccade was required in the same direction as the first reflexive saccade. A second experiment confirmed the basic effect and also showed that a second reflexive saccade may be programmed in parallel with a first voluntary saccade. The results support the view that voluntary and reflexive saccades can be programmed in parallel on a common motor map. (c) 2006 Elsevier Ltd. All rights reserved.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Psychology and Clinical Language Sciences
ID Code:13835
Uncontrolled Keywords:saccades, superior colliculus, frontal eye fields, parallel processing, parallel programming, FRONTAL EYE-FIELD, VISUAL-SEARCH TASK, SUPERIOR COLLICULUS, TARGET, SELECTION, COMPETITIVE INTEGRATION, PREPARATORY SET, FIXATION OFFSET, ANTI-SACCADES, STEP STIMULI, PRO-SACCADES

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