Specific EEG frequencies at specific brain areas and performance

In this study it was shown that in adults, the frequency characteristics of EEG preceding stimuli that were followed by incorrect responses were diffe rent from the characteristics of EEG preceding stimuli that were followed b y correct responses. In the recording during three different tasks that exp lore different neuronal networks, higher values of current preceding incorr ect performance in those areas directly related to the task were found in f requencies within the delta (1.56 and 3.12 Hz) and beta bands (13.26, 14.04 , 14.82, 15.6, 17.16 and 17.94 Hz), suggesting that these frequencies signa l inhibition. Frequencies within the alpha band (9.36 and 12.48 Hz) showed greater energy preceding correct responses in task-specific areas, supporti ng previous results observed in children. (C) 2000 Lippincott Williams & Wi lkins.