| Pro- and Antisaccades: Dissociating Stimulus and Response Influences the Online Control of Saccade Trajectories. | |
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MedLine Citation:
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PMID: 21861629 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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ABSTRACT The authors examined whether the diminished online control of antisaccades is related to a trade-off between movement planning and control or the remapping of target properties to a mirror-symmetrical location (i.e., vector inversion). Pro- and antisaccades were examined in a standard no-delay schedule wherein target onset served as the movement imperative and a delay cuing schedule wherein responses were initiated 2,000 ms following target onset. Importantly, the delay cuing schedule was employed to equate pro- and antisaccade reaction times. Online control was evaluated by indexing the strength of trajectory amendments at normalized increments of movement time. Antisaccades exhibited fewer online corrections than prosaccades, and this result was consistent across cuing schedules. Thus, the diminished online control of antisaccades cannot be tied to a trade-off between movement planning and control. Rather, the authors propose that the intentional nature of dissociating stimulus and response (i.e., vector inversion) engenders a slow mode of cognitive control that is not optimized for fast oculomotor corrections. |
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Authors:
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Jeffrey Weiler; Scott A Holmes; Ali Mulla; Matthew Heath |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-8-23 |
Journal Detail:
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Title: Journal of motor behavior Volume: - ISSN: 1940-1027 ISO Abbreviation: - Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-8-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0236512 Medline TA: J Mot Behav Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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a School of Kinesiology, The University of Western Ontario , London , Canada. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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