Document Detail


Changes in the activity of cells in the lateral geniculate nucleus by stimulation of the abducens nucleus area in rabbits
MedLine Citation:
PMID:  3761206     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
These investigations are aimed at studying the influence of the electrical stimulation of the VIth nucleus (abducens nucleus) on responses of lateral geniculate cells in rabbits. The animals were prepared in the usual fashion for single cell recordings at the lateral geniculate nucleus (LGN). Results show that: Electrical stimulation of the VIth nucleus always produced excitatory discharges whose latency varied from 30 to 400 ms. Interestingly, an electrical pulse applied to the abducens nucleus was capable of enhancing the light-evoked responses without altering the spontaneous rate of firing. It thus seems that the ascending influence of the VIth nucleus manifests itself when it coincides with light responses. Most cells which were sensitive to electrical activation of the abducens nucleus had their receptive field located peripherally (greater than 50 degrees). Histological reconstructions of recording electrode tracts suggest that cells which responded to electrical stimulation were located in a narrow band lying dorsally relative to the LGN. This area can be paralleled with the perigeniculate area observed in other mammals, although not identified in rabbits. It is suggested that these extraretinal impulses which reach the LGN and emerge from an area surrounding the VIth nucleus are associated with corollary discharges.
Authors:
C Casanova; S Molotchnikoff
Publication Detail:
Type:  English Abstract; Journal Article    
Journal Detail:
Title:  Journal de physiologie     Volume:  81     ISSN:  0021-7948     ISO Abbreviation:  J. Physiol. (Paris)     Publication Date:  1986  
Date Detail:
Created Date:  1986-11-14     Completed Date:  1986-11-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9309350     Medline TA:  J Physiol (Paris)     Country:  FRANCE    
Other Details:
Languages:  fre     Pagination:  7-13     Citation Subset:  IM    
Vernacular Title:
Modulations de l'activité des cellules du corps genouillé latéral par la stimulation de la région du noyau abducteur chez le lapin.
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MeSH Terms
Descriptor/Qualifier:
Abducens Nerve / physiology*
Animals
Cats
Electric Stimulation
Evoked Potentials, Visual*
Eye Movements*
Geniculate Bodies / physiology*
Neural Pathways / anatomy & histology
Photic Stimulation
Rabbits
Saccades*
Visual Fields

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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