Document Detail

Learned suppression of photopositive tendencies in Drosophila melanogaster.
MedLine Citation:
PMID:  12593325     Owner:  NLM     Status:  MEDLINE    
A task was designed to teach individual flies to avoid a lighted area after they had displayed an initial preference for it. The flies walked in a T-maze and chose between a lighted and a darkened alley leading, respectively, to a lighted and a darkened vial. Flies that were photopositive on a first trial were subjected to an aversive stimulus (a filter paper inserted into the lighted vial and wetted with a quinine solution), and they performed 16 training trials; they learned to avoid the lighted vial. The flies trained with water instead of quinine in the lighted vial still display avoidance of the lighted vial, but to a lesser extent. The flies trained with a dry filter paper in the lighted vial did not show any increase in avoidance during training. Like the flies trained with no quinine at all, those trained to avoid the lighted vial under a partial reinforcement condition (one half of the trials with quinine, the other half with a dry vial) did not master the task. Finally, removal of the quinine after an avoidance acquisition criterion was reached resulted in an extinction process.
Eric Le Bourg; Christian Buecher
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Animal learning & behavior     Volume:  30     ISSN:  0090-4996     ISO Abbreviation:  Anim Learn Behav     Publication Date:  2002 Nov 
Date Detail:
Created Date:  2003-02-20     Completed Date:  2003-04-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0357415     Medline TA:  Anim Learn Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  330-41     Citation Subset:  IM    
Laboratoire d'Ethologie et Cognition Animale, FRE CNRS 2382, Université Paul-Sabatier, 118 route de Narbonne, 31062 Toulouse, France.
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MeSH Terms
Avoidance Learning*
Choice Behavior*
Conditioning, Classical
Drosophila melanogaster*
Extinction, Psychological
Maze Learning*

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

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