Research article summary (published 29 Nov 2006):

Imaging informational conflict: a functional magnetic resonance imaging study of numerical stroop.

Full Abstract

We employed a parametric version of the comparison Stroop paradigm to investigate the processing of numerical magnitude and physical size under task-relevant and -irrelevant conditions to investigate two theoretical issues: (1) What is the neural fate of task-irrelevant information? (2) What is the neural basis of the resolution of the conflict between task-relevant and -irrelevant information? We show in 18 healthy adults that numerical magnitudes of numbers call for higher processing requirements than physical sizes. The enhanced activation elicited by numerical magnitudes is not modulated by task relevance, indicating autonomous processing. Moreover, the normal behavioral distance effect when the numerical dimension is task relevant and reversed distance effect when it is not show that autonomous processing fully encodes numerical magnitudes. Conflict trials elicited greater activation in bilateral inferior frontal gyri, right middle frontal gyri, and right superior frontal gyri. We postulate two sources to the conflict, namely, at cognitive and response levels.

Author information

Author/s: Tang, J (J); Critchley, H D (HD); Glaser, D E (DE); Dolan, R J (RJ); Butterworth, B (B);

Affiliation: University College London, UK. joey.tang(-atsign-)ucl.ac.uk

Grants: 078865 (Agency:Wellcome Trust) ; (Agency:Wellcome Trust)

Journal and publication information

Publication Type: Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't

Journal: Journal of cognitive neuroscience (J Cogn Neurosci), published in United States. (Language: eng)

Reference: 2006-Dec; vol 18 (issue 12) : pp 2049-62

Dates: Created 2006/11/28; Completed 2007/02/08; Revised 2009/02/10;

PMID: 17129190, 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 Brain - physiology Conflict (Psychology) Data Interpretation, Statistical Female Humans Image Processing, Computer-Assisted Magnetic Resonance Imaging

Magnetic Resonance Imaging Male Mental Processes - physiology Neuropsychological Tests Parietal Lobe - physiology Photic Stimulation Psychomotor Performance - physiology Reaction Time - physiology

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