Document Detail

Sign-tracking with an interfood clock.
MedLine Citation:
PMID:  16812418     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Food was presented to pigeons, irrespective of their behavior. The fixed 60-s interfood interval was segmented into ten 6-s periods, each signaled by a distinctive stimulus color, ordered by wavelength. This "interfood clock" reliably generated and maintained successively higher rates of key pecking at stimuli successively closer to food. Under extinction, key pecking ceased. When the standard stimulus sequence was changed to a different sequence for each bird, accelerated responding again emerged and was sustained under each of the new color sequences. However, responding was neither maintained nor acquired when each successive interfood interval provided a different random sequence of the ten stimuli. Thus, the interfood clock generated and maintained sign-tracking under stimulus control, and the resulting behavior was attributable neither to stimulus generalization nor to a simple temporal gradient.
W L Palya
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the experimental analysis of behavior     Volume:  43     ISSN:  0022-5002     ISO Abbreviation:  J Exp Anal Behav     Publication Date:  1985 May 
Date Detail:
Created Date:  2010-06-29     Completed Date:  2010-06-29     Revised Date:  2010-09-15    
Medline Journal Info:
Nlm Unique ID:  0203727     Medline TA:  J Exp Anal Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  321-30     Citation Subset:  -    
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