TY - JOUR
T1 - Spatiotemporal organization of brain dynamics and intelligence
T2 - An EEG study in adolescents
AU - Anokhin, Andrey P.
AU - Lutzenberger, Werner
AU - Birbaumer, Niels
N1 - Funding Information:
Supported by the German Research Society (DFG), Alexander von Humboldt Fountation (Bonn), and the Russian Academy of Sciences.
Funding Information:
The study was partly supported by the German Research Society (DFG), Alexander von Humboldt Foundation (Bonn), the Russian Academy of Sciences, and the Children’s Development and Adaptation Center (Moscow). We specially thank Drs I. Kuznetsova and A. Nikolaev for their help in conducting EEG examinations.
PY - 1999/9/1
Y1 - 1999/9/1
N2 - This study investigated relationships between global dynamics of brain electric activity and intelligence. EEG was recorded monopolarly from 10 symmetric leads (10-20 system) in 37 (17 males) healthy subjects (mean age 13.7 years) at rest and during performance of two visually presented cognitive tasks, verbal (semantic grouping) and spatial (mental rotation). On another occasion, the subjects were administered the Intelligence Structure Test (IST). Both total IST score and some individual subtests of specific abilities showed significant positive correlations with EEG coherence in the theta band and significant negative relationships with EEG dimension, a measure of complexity and unpredictability of neural oscillatory dynamics underlying the EEG time series. Furthermore, EEG coherence and dimensional complexity were inversely related. Taken together, these EEG metrics accounted for over 30% of the variability of the total IST score in this sample. No significant effects of the task type (spatial vs. verbal) or specific abilities were observed. Long-distance theta coherence between frontal and parieto-occipital areas showed the most consistent relationship with cognitive abilities. The results suggest that order to chaos ratio in task-related brain dynamics may be one of the biological factors underlying individual differences in cognitive abilities in adolescents. Copyright (C) 1999 Elsevier Science B.V.
AB - This study investigated relationships between global dynamics of brain electric activity and intelligence. EEG was recorded monopolarly from 10 symmetric leads (10-20 system) in 37 (17 males) healthy subjects (mean age 13.7 years) at rest and during performance of two visually presented cognitive tasks, verbal (semantic grouping) and spatial (mental rotation). On another occasion, the subjects were administered the Intelligence Structure Test (IST). Both total IST score and some individual subtests of specific abilities showed significant positive correlations with EEG coherence in the theta band and significant negative relationships with EEG dimension, a measure of complexity and unpredictability of neural oscillatory dynamics underlying the EEG time series. Furthermore, EEG coherence and dimensional complexity were inversely related. Taken together, these EEG metrics accounted for over 30% of the variability of the total IST score in this sample. No significant effects of the task type (spatial vs. verbal) or specific abilities were observed. Long-distance theta coherence between frontal and parieto-occipital areas showed the most consistent relationship with cognitive abilities. The results suggest that order to chaos ratio in task-related brain dynamics may be one of the biological factors underlying individual differences in cognitive abilities in adolescents. Copyright (C) 1999 Elsevier Science B.V.
KW - Cognitive tasks
KW - Coherence
KW - Dimensional complexity
KW - EEG
KW - Intelligence
UR - http://www.scopus.com/inward/record.url?scp=0032827319&partnerID=8YFLogxK
U2 - 10.1016/S0167-8760(99)00064-1
DO - 10.1016/S0167-8760(99)00064-1
M3 - Article
C2 - 10533842
AN - SCOPUS:0032827319
SN - 0167-8760
VL - 33
SP - 259
EP - 273
JO - International Journal of Psychophysiology
JF - International Journal of Psychophysiology
IS - 3
ER -