Document Detail

Enhanced motion sensitivity follows saccadic suppression in the superior temporal sulcus of the macaque cortex.
MedLine Citation:
PMID:  16785254     Owner:  NLM     Status:  MEDLINE    
The responses of neurons in the middle temporal and medial superior temporal areas of macaque cortex are suppressed during saccades compared with saccade-like stimulus movements. We utilized the short-latency ocular following paradigm to show that this saccadic suppression is followed by postsaccadic enhancement of motion responses. The level of enhancement decays with a time constant of 100 ms from saccade end. The speed of ocular following is also enhanced after saccades and decays over a similar time course, suggesting a link between the neural and behavioral effects. There is some evidence that maximum postsaccadic enhancement occurs when cells are stimulated at their optimum speeds. Latencies of motion responses are saccade dependent: 37 ms for saccade-generated motion, 45 ms for motion in the half-second after saccades, and 70 ms with no prior saccades. The finding that saccades alter response latencies may partially explain perceptual time compression during saccades and time dilation after saccades.
M R Ibbotson; N S C Price; N A Crowder; S Ono; M J Mustari
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2006-06-19
Journal Detail:
Title:  Cerebral cortex (New York, N.Y. : 1991)     Volume:  17     ISSN:  1047-3211     ISO Abbreviation:  Cereb. Cortex     Publication Date:  2007 May 
Date Detail:
Created Date:  2007-04-05     Completed Date:  2007-05-31     Revised Date:  2007-12-03    
Medline Journal Info:
Nlm Unique ID:  9110718     Medline TA:  Cereb Cortex     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1129-38     Citation Subset:  IM    
Visual Sciences, Research School of Biological Sciences, Australian National University, Canberra, ACT 2601, Australia.
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MeSH Terms
Adaptation, Physiological / physiology
Macaca mulatta
Motion Perception / physiology*
Neural Inhibition / physiology*
Reaction Time / physiology*
Saccades / physiology*
Sensitivity and Specificity
Sensory Thresholds / physiology*
Temporal Lobe / physiology*
Grant Support

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