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Psychometric intelligence and P3 of the event-related potentials studied with a 3-stimulus auditory oddball task
Eligiusz Wronka1, Jan Kaiser, Anton M L Coenen
1Institute of Psychology, Jagiellonian University, Mickiewicza 3, 31-120 Krakow, Poland; Department of Biological Psychology, Radboud University Nijmegen, Montesorilaan 3, 6525 HR Nijmegen, The Netherlands. eligiusz.wronka@gmail.com
Abstract:
Relationship between psychometric intelligence measured with Raven's Advanced Progressive Matrices (RAPM) and event-related potentials (ERP) was examined using 3-stimulus oddball task. Subjects who had scored higher on RAPM exhibited larger amplitude of P3a component. Additional analysis using the Standardized Low Resolution Electromagnetic Tomography (sLORETA) revealed that this effect corresponds with stronger activity within the frontal cortex and the cingulate gyrus. High intelligence can also be linked with greater P3b response and stronger activity within the parietal cortex and the posterior cingulate gyrus. It may be concluded that the processes related to the initial stage of attention engagement as indexed by P3a, as well as the later stimulus evaluation and classification reflected in P3b, are more intense in subjects scoring higher on RAPM. The quality of mental abilities can therefore be related to differences of the activity in frontal and parietal brain regions.
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