Document Detail


Do rats time filled and empty intervals of equal duration differently?
MedLine Citation:
PMID:  17343993     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The goal was to determine whether rats time filled and empty intervals of equal duration differently. Each of five rats was trained for 50 sessions on an instrumental appetitive head entry procedure in which food was available (primed) every 120 s. On "empty" cycles, 30s prior to the next food prime, a 0.5-s pulse of white noise was presented. On "filled" cycles, 30s prior to the next food prime, white noise came on and stayed on until food was delivered. The two types of cycles were presented with equal probability. The results showed that the rats timed both the food-to-food interval and the stimulus-to-food interval. A comparison of the response gradients on filled and empty cycles following stimulus presentation showed better temporal discrimination on filled cycles. The results were modeled using a Packet theory of timing, with a linear averaging rule to combine the temporal information provided by the stimulus and food. The model fits to the individual response gradients were evaluated with a Turing test.
Authors:
Mika L M Macinnis
Related Documents :
8210453 - The effect of intertrial food presentations on anticipatory goal-tracking in the rat.
19376153 - Escalation of food-maintained responding and sensitivity to the locomotor stimulant eff...
7108083 - Microbiological evaluation of food items. for patients undergoing gastrointestinal deco...
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2007-02-08
Journal Detail:
Title:  Behavioural processes     Volume:  75     ISSN:  0376-6357     ISO Abbreviation:  Behav. Processes     Publication Date:  2007 Jun 
Date Detail:
Created Date:  2007-04-24     Completed Date:  2007-07-06     Revised Date:  2007-12-03    
Medline Journal Info:
Nlm Unique ID:  7703854     Medline TA:  Behav Processes     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  182-7     Citation Subset:  IM    
Affiliation:
Department of Psychology, Box 1853, Brown University, Providence, RI 02912, USA. Mika_Macinnis@Brown.edu
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animals
Attention / physiology*
Conditioning, Operant / physiology*
Discrimination (Psychology) / physiology*
Male
Perceptual Masking / physiology*
Rats
Rats, Sprague-Dawley
Reinforcement Schedule
Time Perception / physiology*
Grant Support
ID/Acronym/Agency:
MH44234/MH/NIMH NIH HHS

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


Previous Document:  Sesquiterpenes from Ulmus davidiana var. japonica with the inhibitory effects on lipopolysaccharide-...
Next Document:  Species differences between rats and pigeons in choices with probabilistic and delayed reinforcers.