Abstract
The EEG correlates of the verbal, numerical, and figural IQ components according to the power and coherence characteristics of the baseline EEG in six frequency bands were studied taking into account personality traits of subjects (extroversion, neuroticism, psychoticism, and anxiety). Analysis of variance and correlation showed that a decreased power of the low-frequency θ1, 2and α1 rhythms and increased EEG power in the β2 band with the right-hemispheric dominance were characteristic of persons with higher intelligence. These EEG characteristics were associated with increased interhemispheric interaction according to the coherence indices and increased coherence within the right hemisphere. Each of the intelligence components (verbal, numerical, and figural) was characterized by a specific baseline frequency–spatial EEG pattern distinguished by specific interactions, predominantly, between the frontal and caudal cortical regions in the θ and/or β2 frequency bands.
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Razoumnikova, O.M. Reflection of the Intelligence Structure in the Spatiotemporal Features of the Baseline EEG. Human Physiology 29, 619–626 (2003). https://doi.org/10.1023/A:1025876203177
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DOI: https://doi.org/10.1023/A:1025876203177