Document Detail

Classical conditioning of hippocampal theta patterns in the rat.
MedLine Citation:
PMID:  301529     Owner:  NLM     Status:  MEDLINE    
Electrical stimulation (88 HZ) of the lateral hypothalamus elicited a sustained theta response at hippocampal recording sites of rats immobilized with succinylcholine. By pairing this unconditioned stimulus with a 10-sec presentation of a light, conditioned theta responses were demonstrated in as few as 40 trials. Spectral analysis of hippocampal bioelectric patterns during acquisition, extinction, and reconditioning indicated that the earliest change as a result of conditioning is a loss of power in EEG frequency below 8 HZ, followed by the development of a peak at 8 HZ with further conditioning. Extinction was associated with an increase in power in the frequencies below 8 HZ. When the conditioned rats were tested in the absence of the neuromuscular blocking agent, the conditioned stimulus elicited a theta response that was associated with slow motor activity on 70% of the trials.
H Teitelbaum; W L McFarland; J L Mattsson
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of comparative and physiological psychology     Volume:  91     ISSN:  0021-9940     ISO Abbreviation:  J Comp Physiol Psychol     Publication Date:  1977 Jun 
Date Detail:
Created Date:  1977-08-12     Completed Date:  1977-08-12     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0414612     Medline TA:  J Comp Physiol Psychol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  674-81     Citation Subset:  IM; S    
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MeSH Terms
Conditioning, Classical / physiology*
Electric Stimulation
Extinction, Psychological / physiology
Hippocampus / physiology*
Hypothalamus / physiology
Immobilization / drug effects
Medial Forebrain Bundle / physiology
Motor Activity / physiology
Photic Stimulation
Succinylcholine / pharmacology
Theta Rhythm*
Reg. No./Substance:

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

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