| The effect of blinks and saccadic eye movements on visual reaction times. | |
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MedLine Citation:
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PMID: 19429958 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Vision is suppressed during blinks and saccadic eye movements. We hypothesized that visual reaction times (RTs) in a vigilance test would be significantly increased when a blink or a saccade happened to coincide with the stimulus onset. Thirty healthy volunteers each performed a visual RT test for 15 min while their eye and eyelid movements were monitored by a system of infrared reflectance oculography. RTs increased significantly, many by more than 200 msec, when a blink occurred between 75 msec before and up to 150 msec after the stimulus onset. A similar result was observed with saccades that started 75 to 150 msec after the stimulus. Vision or attention was evidently inhibited before each blink and for longer than the saccades lasted. We suggest that visual suppression is involved in this process, which could explain some of the normal variability in RTs over periods of seconds that has not been adequately explained before. |
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Authors:
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Murray Johns; Kate Crowley; Robert Chapman; Andrew Tucker; Christopher Hocking |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Attention, perception & psychophysics Volume: 71 ISSN: 1943-3921 ISO Abbreviation: Atten Percept Psychophys Publication Date: 2009 May |
Date Detail:
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Created Date: 2009-05-11 Completed Date: 2009-07-13 Revised Date: 2011-02-24 |
Medline Journal Info:
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Nlm Unique ID: 101495384 Medline TA: Atten Percept Psychophys Country: United States |
Other Details:
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Languages: eng Pagination: 783-8 Citation Subset: IM |
Affiliation:
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Swinburne University of Technology, Melbourne, Victoria, Australia. mjohns@optalert.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Attention* Blinking* Discrimination Learning* Female Humans Male Pattern Recognition, Visual* Psychomotor Performance* Reaction Time* Reversal Learning Saccades* Sensory Thresholds Young Adult |
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