Research article summary (published 30 Oct 2006):

Callosal involvement in a lateralized stroop task in alcoholic and healthy subjects.

Full Abstract

To investigate the role of interhemispheric attentional processes, 25 alcoholic and 28 control subjects were tested with a Stroop match-to-sample task and callosal areas were measured with magnetic resonance imaging. Stroop color-word stimuli were presented to the left or right visual field (VF) and were preceded by a color cue that did or did not match the word's color. For matching colors, both groups showed a right VF advantage; for nonmatching colors, controls showed a left VF advantage, whereas alcoholic subjects showed no VF advantage. For nonmatch trials, VF advantage correlated with callosal splenium area in controls but not alcoholic subjects, supporting the position that information presented to the nonpreferred hemisphere is transmitted via the splenium to the hemisphere specialized for efficient processing. The authors speculate that alcoholism-associated callosal thinning disrupts this processing route.

Author information

Author/s: Schulte, T (T); Müller-Oehring, E M (EM); Salo, R (R); Pfefferbaum, A (A); Sullivan, E V (EV);

Affiliation: Neuroscience Program, SRI International, Menlo Park, CA, USA.

Grants: AA05965 (Agency:NIAAA NIH HHS) ; AA10723 (Agency:NIAAA NIH HHS) ; AA12388 (Agency:NIAAA NIH HHS) ; AA12999 (Agency:NIAAA NIH HHS)

Journal and publication information

Publication Type: Journal Article; Research Support, N.I.H., Extramural

Journal: Neuropsychology (Neuropsychology), published in United States. (Language: eng)

Reference: 2006-Nov; vol 20 (issue 6) : pp 727-36

Dates: Created 2006/11/14; Completed 2007/01/10; Revised 2007/12/03;

PMID: 17100517, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adult Alcoholism - pathology; physiopathology Attention - physiology Color Perception - physiology Corpus Callosum - pathology; physiopathology Cues Female Functional Laterality - physiology

Humans Magnetic Resonance Imaging Male Middle Aged Neuropsychological Tests Psychomotor Performance - physiology Reaction Time - physiology Visual Perception - physiology

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