Asymmetry of At-Rest Human Frontal Lobe Activity is Related to Perseveration
Flint, Isaac R.
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Electroencephalographic (EEG) data from 21 undergraduate students were obtained and analyzed to assess the relationship between at-rest measures of differential EEG activity in the frontal lobes (frontal EEG asymmetry) and scores related to perseveration. At-rest EEG activity was recorded from six frontal EEG sites using the international 10-20 electrode placement system. Differences between left and right frontal lobe EEG activity were compared to participants' perseverative errors, non-perseverative errors, and correct responses on a computerized version of the Wisconsin Card Sorting Test, the Berg’s Card Sorting Test 64. Increased left frontal lobe activity was related to more non-perseverative errors, and increased right frontal lobe activity was related to less perseverative errors and more correct responses. These results indicate the importance of right frontal lobe activity in inhibiting incorrect responses when avoiding perseverative behavior.