Document Detail

Conditioning of an autonomic response in Crustacea.
MedLine Citation:
PMID:  20451536     Owner:  NLM     Status:  MEDLINE    
Reports on experience-dependent changes in invertebrate autonomic function are few. In the crab Chasmagnathus, repeated presentations of a visual danger stimulus (VDS) elicit long-term cardiac adjustments. Although these changes can be explained in terms of an associative process, they do not necessarily indicate an anticipatory conditioned response. In the present work, we investigated anticipation of the cardio-inhibitory response (CIR) after classical conditioning. We found that an initially seemingly neutral stimulus, which could trigger only a brief CIR as part of an arousal/orienting response, following pairing with the unconditioned stimulus, 24 h after a second exposure, triggered a significantly stronger CIR response compared to controls. We propose that, as a result of training, the conditioned stimulus acquires a different biological meaning, allowing the crab to anticipate the aversive stimulus.
Ana Burnovicz; Gabriela Hermitte
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-05-06
Journal Detail:
Title:  Physiology & behavior     Volume:  101     ISSN:  1873-507X     ISO Abbreviation:  Physiol. Behav.     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-07-08     Completed Date:  2010-11-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0151504     Medline TA:  Physiol Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  168-75     Citation Subset:  IM    
Copyright Information:
Copyright 2010 Elsevier Inc. All rights reserved.
Laboratorio de Neurobiología de la Memoria, Departamento Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2 Ciudad Universitaria (1428), Buenos Aires, Argentina.
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MeSH Terms
Adaptation, Physiological
Association Learning / physiology*
Autonomic Nervous System / physiology
Brachyura / physiology*
Conditioning, Classical / physiology*
Escape Reaction / physiology*
Heart Rate

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