Document Detail

Behavioral adaptation of the Aplysia siphon-withdrawal response is accompanied by sensory adaptation.
MedLine Citation:
PMID:  17324064     Owner:  NLM     Status:  MEDLINE    
Behavioral adaptation is a decrease in behavioral responsiveness due to a sustained stimulus and is a key component to an organism's overall adjustment to its ambient environment. The authors examined the relationship between behavioral adaptation and sensory adaptation in the siphon-withdrawal reflex (SWR) of Aplysia californica. Sensory input to the SWR circuit was measured via en passant extracellular recordings from the siphon nerve in semi-intact preparations. The authors characterized sensory activity in response to water turbulence, an ethologically relevant stimulus that produces behavioral adaptation of the SWR. The authors found that water turbulence elicits a continuous sensory response that adapts to a low-level steady state. Consistent with behavioral measures, this sensory adaptation attenuates the evoked response to siphon taps delivered during water turbulence. Comparing trends in both behavioral and sensory adaptation revealed similar dynamics during turbulence but divergent trends during recovery. Specifically, behavioral recovery was inversely related to the duration of environmental change; recovery of sensory adaptation was not. This supports the authors' hypothesis that environment-driven behavioral adaptation reflects an interaction between sensory adaptation and additional dynamic processes.
Robert J Calin-Jageman; Thomas M Fischer
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Behavioral neuroscience     Volume:  121     ISSN:  0735-7044     ISO Abbreviation:  Behav. Neurosci.     Publication Date:  2007 Feb 
Date Detail:
Created Date:  2007-02-27     Completed Date:  2007-04-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8302411     Medline TA:  Behav Neurosci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  200-11     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2007 APA, all rights reserved.
Department of Psychology, Wayne State University, Detroit, MI 48202, USA.
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MeSH Terms
Action Potentials / drug effects,  physiology
Adaptation, Physiological / physiology*
Anesthesia / methods
Aplysia / physiology*
Behavior, Animal / physiology
Magnesium Chloride / pharmacology
Motor Neurons / physiology
Physical Stimulation / methods
Reflex / physiology*
Sensory Thresholds / drug effects,  physiology
Touch / physiology*
Water Movements
Reg. No./Substance:
7786-30-3/Magnesium Chloride

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

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