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| Research article summary (published 30 Dec 2002): |
Serotonin levels influence patterns of repetition priming.
Full Abstract
Repetition priming in a word-stem completion task was examined in a group of control subjects and in a group of experimental subjects under conditions of acute tryptophan depletion (T-) and tryptophan augmentation (T+). Experimental subjects ingested amino acid compounds that depleted or loaded the body with tryptophan, and word-stem completion priming performance was measured. Results indicate differential effects of T- and T+ manipulations on word-stem completion priming. In the control group, both specific-visual and amodal priming were observed. Conversely, in the T+ condition, specific-visual priming, but no amodal priming, was observed, whereas in the T- condition, amodal priming, but no specific-visual priming, was observed. The authors conclude that serotonin (5-hydroxytryptamine) plays a critical role in repetition priming by helping to modulate which neural systems contribute to priming effects.
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Author information
Author/s: Burgund, E Darcy (ED); Marsolek, Chad J (CJ); Luciana, Monica (M);
Affiliation: Department of Neurology, Washington University School of Medicine, St. Louis, Missouri 63110, USA. darcy@npg.wustl.edu
Grants: M01-RR00400 (Agency:United States NCRR)
Journal and publication information
Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.
Journal: Neuropsychology (Neuropsychology), published in United States. (Language: eng)
Reference: 2003-Jan; vol 17 (issue 1) : pp 161-70
Dates: Created 2003/02/24; Completed 2003/04/11; Revised 2007/11/14;
PMID: 12597085, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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