Document Detail

Effects of posterior parietal lesions (area 7) on VOR in monkeys.
MedLine Citation:
PMID:  3487465     Owner:  NLM     Status:  MEDLINE    
Unilateral ablations of area 7 were performed in three adult monkeys. Vestibulo-ocular reflex (VOR) was tested in the dark by sinusoidal rotations at different frequencies. Following lesion of area 7, spontaneous nystagmus was observed in the dark, with the fast phase directed toward the lesioned side. The same lesion induced a strong VOR asymmetry due to a gain decrease when the animal was rotated toward the side contralateral to the lesion and an increase when rotated toward the opposite side. These VOR deficits were transient: spontaneous nystagmus was no longer present after the first post-operative week whereas the VOR asymmetry lasted for 2 to 4 weeks after the lesion. It is concluded that area 7 might be involved in an ipsilateral control of the slow component of VOR. These results support the idea that posterior parietal cortex plays a role in body reference stabilization.
J Ventre; S Faugier-Grimaud
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Experimental brain research     Volume:  62     ISSN:  0014-4819     ISO Abbreviation:  Exp Brain Res     Publication Date:  1986  
Date Detail:
Created Date:  1986-08-06     Completed Date:  1986-08-06     Revised Date:  2013-12-13    
Medline Journal Info:
Nlm Unique ID:  0043312     Medline TA:  Exp Brain Res     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  654-8     Citation Subset:  IM; S    
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MeSH Terms
Functional Laterality / physiology
Macaca fascicularis
Nerve Crush
Nystagmus, Physiologic*
Parietal Lobe / physiology*
Reflex / physiology
Spatial Behavior / physiology
Vestibule, Labyrinth / physiology*

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