Document Detail


Trace and long-delay fear conditioning in the developing rat.
MedLine Citation:
PMID:  16573214     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In two experiments with rats, we examined the developmental emergence of conditioned freezing following trace and short-delay conditioning and also included a long-delay comparison group. In the short-delay and trace groups, a 10-sec conditioned stimulus (CS) was paired with shock; for the trace rats, a 10-sec trace interval followed CS termination. The long-delay groups received a 20-sec CS paired with shock, to equate for the longer interstimulus interval (ISI) in the trace group. Trace conditioning emerged later in development than did short-delay conditioning (see Moye & Rudy, 1987). Importantly, long-delay conditioning emerged in parallel with trace conditioning, at a similar time, and with similar strength. These findings suggest a role for the longer ISI, as opposed to the unfilled gap per se, in the late emergence of trace conditioning. The role of the hippocampus in trace conditioning and the possibility that young rats encode the temporal relationship between CSs and unconditioned stimuli are also considered.
Authors:
Robert C Barnet; Pamela S Hunt
Related Documents :
1616604 - Vibrissal roughness discrimination is barrelcortex-dependent.
19419674 - Labyrinthectomy abolishes the behavioral and neural response of rats to a high-strength...
22486754 - Re-assessing causal accounts of learnt behavior in rats.
12623544 - Palatability shifts in taste and flavour preference conditioning.
525394 - Colon of the rat. an anatomic, histologic and radiographic investigation.
1513804 - Development of diabetic complications in a new diabetic strain of rat (wbn/kob).
Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Learning & behavior     Volume:  33     ISSN:  1543-4494     ISO Abbreviation:  Learn Behav     Publication Date:  2005 Nov 
Date Detail:
Created Date:  2006-03-31     Completed Date:  2006-04-25     Revised Date:  2011-01-24    
Medline Journal Info:
Nlm Unique ID:  101155056     Medline TA:  Learn Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  437-43     Citation Subset:  IM    
Affiliation:
Department of Psychology, College of William & Mary, Williamsburg, Virginia, USA. rcbarn@wm.edu
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animals
Behavior, Animal
Blinking
Conditioning (Psychology)*
Fear*
Male
Random Allocation
Rats / growth & development
Grant Support
ID/Acronym/Agency:
AA12466/AA/NIAAA NIH HHS

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


Previous Document:  Identity concept formation during visual multiple-choice matching in a harbor seal (Phoca vitulina).
Next Document:  Ontogenetic forgetting of stimulus attributes.