Document Detail

Circumvention of extraretinal photoresponses in assessing recovery of vision following optic nerve crush in goldfish.
MedLine Citation:
PMID:  6824528     Owner:  NLM     Status:  MEDLINE    
Earlier experiments indicated that a conditioned light stimulus that was used to investigate the recovery of vision following optic nerve crush could evoke an extraretinal photoresponse. The present experiments sought to identify a visual stimulus that does not evoke a response following removal of both eyes for use in experiments on optic nerve regeneration. A stimulus consisting of a slight up-down movement of a small ring of light, that was kept stationary between conditioning trials, was classically conditioned to shock in eyed fish and the conditioned response consisted of a suppression of branchial ventilation movements. Following bilateral enucleation or a sham operation the fish received additional sessions of conditioning trials over a period of 3 weeks. Postoperative responding to the moving light stimulus was blocked in the enucleated but not the sham-operated fish. When the ring of light was turned on and off as a conditioned stimulus, responding was extensively but not completely eliminated following enucleation. The investigation confirms that extraretinal photostimulation can be classically conditioned to shock in at least some goldfish, and it shows that such conditioning can be circumvented by using a small moving light as the conditioned stimulus.
R E Davis; B E Schlumpf
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Behavioural brain research     Volume:  7     ISSN:  0166-4328     ISO Abbreviation:  Behav. Brain Res.     Publication Date:  1983 Jan 
Date Detail:
Created Date:  1983-04-07     Completed Date:  1983-04-07     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8004872     Medline TA:  Behav Brain Res     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  65-79     Citation Subset:  IM; S    
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MeSH Terms
Conditioning, Classical / physiology
Dominance, Cerebral / physiology
Nerve Crush
Nerve Regeneration*
Optic Nerve / physiology*
Photic Stimulation
Photoreceptor Cells / physiology*
Retina / physiology*
Sensory Deprivation / physiology
Visual Perception / physiology*

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

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