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Express averaging saccades in monkeys.

dc.contributor.author Chou, IH
dc.contributor.author Schiller, PH
dc.contributor.author Sommer, Marc A
dc.coverage.spatial England
dc.date.accessioned 2016-03-25T03:22:53Z
dc.date.issued 1999
dc.identifier https://www.ncbi.nlm.nih.gov/pubmed/10755158
dc.identifier S0042-6989(99)00133-9
dc.identifier.issn 0042-6989
dc.identifier.uri http://hdl.handle.net/10161/11755
dc.description.abstract When monkeys are presented simultaneously with multiple stimuli, they can make one of two types of response. Either they make averaging saccades, that land at intermediate locations between the targets, or target-directed saccades, that land close to one of the targets. The two types of saccades occur at different latencies and are thought to reflect different processes; fast reflexive averaging and slower target selection. We investigated the latency of averaging saccades in five monkeys, with particular emphasis on 'express' latency saccades, which are thought to be inhibited by target selection. Express averaging saccades were made prolifically by the two monkeys that made both express and regular latency saccades, but only when no specific instruction was given regarding the saccade target. When these monkeys had to choose one of the targets, on the basis of its color, they still made averaging saccades. However, the endpoints formed two distributions close to the targets as opposed to one single distribution centered between the targets, as was the case when targets were identical; also, express saccades were almost entirely absent. We conclude that express averaging saccades are a form of spatial and temporal optimization of gaze shifting.
dc.language eng
dc.relation.ispartof Vision Res
dc.subject Animals
dc.subject Macaca mulatta
dc.subject Photic Stimulation
dc.subject Reaction Time
dc.subject Saccades
dc.title Express averaging saccades in monkeys.
dc.type Journal article
pubs.author-url https://www.ncbi.nlm.nih.gov/pubmed/10755158
pubs.begin-page 4200
pubs.end-page 4216
pubs.issue 25
pubs.organisational-group Basic Science Departments
pubs.organisational-group Biomedical Engineering
pubs.organisational-group Center for Cognitive Neuroscience
pubs.organisational-group Duke
pubs.organisational-group Duke Institute for Brain Sciences
pubs.organisational-group Institutes and Provost's Academic Units
pubs.organisational-group Neurobiology
pubs.organisational-group Pratt School of Engineering
pubs.organisational-group School of Medicine
pubs.organisational-group University Institutes and Centers
pubs.publication-status Published
pubs.volume 39


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