Various other attributes of EEG have also been implicated. In one study, young children (11 to 13 years old) of alcoholic parents were found to have more relative fast (β, >18 Hz) activity in their EEG than children without alcoholic parents.57 In a recent study examining older adults with alcoholic relatives, sons of alcoholics were found to have elevated β amplitudes in specific regions of the brain58; however, other studies have not observed this finding.42,59 Both linkage and candidate gene analysis that incorporate various aspects of EEG are currently being explored in connection with certain subtypes (endophenotypes) of alcohol dependence.
