(1) alcoholics scored higher compared to controls on the nonplanning and motor impulsiveness subscales of the BIS-11 scale as well as on the total impulsiveness, indicating higher impulsiveness in alcoholics, (2) alcoholics committed more omission (Go) errors compared to controls, (3) alcoholics displayed lower evoked delta, theta, slow alpha, and fast alpha frequency band power compared to controls regardless of condition, indicating lower resource allocation for the activation/inhibition dimension, (4) these findings were highly significant in both Go and NoGo conditions for the evoked delta, theta, and slow alpha power, whereas they were significant in only the NoGo condition for evoked fast alpha power, indicating its specific relative contribution to the suppression of a motor response.
