Document Detail


Induction of LTP in rat primary visual cortex: tetanus parameters.
MedLine Citation:
PMID:  2720377     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Long-term potentiation (LTP), intensively studied in the hippocampus as a possible mnemonic device, has begun to be studied in the neocortex. In this study the effects of varying tetanic stimulus parameters on LTP of field potentials recorded from layer II/III induced by white matter stimulation in the in vitro rat visual cortical slice were examined. Low intensity tetanus was more effective in producing LTP than high-intensity tetanus, although single pulses of very high intensity reliably resulted in LTP. LTP consistently occurred following 2 Hz-60 min, or 100 Hz-10 min tetanus; whereas, 10 min of 7 and 25 Hz tetanus usually resulted in long-lasting depression. Although no obvious rule related tetanus frequency and duration to the incidence of LTP, an inverted-U relationship was found between tetanus frequency and LTP magnitude.
Authors:
R L Berry; T J Teyler; T Z Han
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Publication Detail:
Type:  In Vitro; Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Brain research     Volume:  481     ISSN:  0006-8993     ISO Abbreviation:  Brain Res.     Publication Date:  1989 Mar 
Date Detail:
Created Date:  1989-06-30     Completed Date:  1989-06-30     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0045503     Medline TA:  Brain Res     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  221-7     Citation Subset:  IM    
Affiliation:
Neurobiology Department, Northeastern Ohio Universities College of Medicine, Rootstown 44272.
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MeSH Terms
Descriptor/Qualifier:
Animals
Electric Stimulation
Female
Male
Rats
Reaction Time / physiology
Visual Cortex / physiology*
Grant Support
ID/Acronym/Agency:
DA03755/DA/NIDA NIH HHS

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


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