2017 Conference

2017 I01 - Intelligence and EEG Measures of Information Flow: Efficiency and Homeostatic Neuroplasticity - Robert Thatcher, PhD

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  • Released: 10/25/2017 22:56:47
  • Level: Beginner

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The purpose of this study was to explore the relationship between the magnitude of EEG information flow and intelligence. The electroencephalogram (EEG) was recorded from 19 scalp locations from 371 subjects ranging in age from 5 years to 17 years. The Wechsler Intelligence (WAIS-R) was administered to estimate I.Q. The phase slope index estimated the magnitude of information flow between all electrode combinations for difference frequency bands. Discriminant analyses were performed between high I.Q. (> 120) and low I.Q. groups (< 90). The magnitude of information flow was inversely related to I.Q. especially in the alpha and beta frequency bands. Long distance inter-electrode distances exhibited greater information flow than short inter-electrode distances. Frontal parietal correlations were the most significant. It is concluded that higher I.Q. is related to increased efficiency of local information processing and reduced long distance compensatory dynamics that supports a small-world model of intelligence.


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