Rethinking neural efficiency: effects of controlling for strategy use.

Full Abstract

A sentence verification task (SVT) was used to test whether differences in neural activation patterns that have been attributed to IQ may actually depend on differential strategy use between IQ groups. Electroencephalograms were recorded from 14 low (89 < IQ < 110) and 14 high (121 < IQ < 142) IQ individuals as they performed the SVT with either a spatial or verbal strategy. Event-related desynchronization in upper alpha (9.5-12.5 Hz) and theta (4-6 Hz) bands showed that different strategies evoked different activation patterns, but these patterns did not differ between groups. However, an IQ-related correlate was found in the preparation interval. Thus, although processing patterns during task performance seem to depend on the strategy used for task execution, preparation for task processing may depend on IQ.(PsycINFO Database Record (c) 2007 APA, all rights reserved).

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Author information

Author/s: Toffanin, Paolo (P); Johnson, Addie (A); de Jong, Ritske (R); Martens, Sander (S);

Affiliation: University Medical Center Groningen, Groningen, Netherlands. p.toffanin(-atsign-)med.umcg.nl

Journal and publication information

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

Journal: Behavioral neuroscience (Behav Neurosci), published in United States. (Language: eng)

Reference: 2007-Oct; vol 121 (issue 5) : pp 854-70

Dates: Created 2007/10/02; Completed 2007/11/20;

PMID: 17907818, status: MEDLINE (last retrieval date: 11/6/2008)

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Intelligence Tests
Male
Mental Processes - physiology
Neurons - physiology
Photic Stimulation
Psychomotor Performance - physiology
Reaction Time - physiology
Space Perception - physiology
Theta Rhythm

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