Prior to administration of the neurophysiology test battery, alcoholic subjects had been detoxified in a 30-day treatment program and none of the subjects was in the withdrawal phase. All subjects were excluded from the neurophysiology protocol if they manifested any of the following: uncorrected sensory deficits, hepatic encephalopathy/cirrhosis of the liver, history of significant head injury, seizures or neurosurgical procedures, other acute/chronic medical illness, were on medication known to influence brain functioning (e.g., any psychotropic medications), or tested positive for HIV. The subjects were also excluded on the basis of recent (i.e., 5 days) substance and alcohol use, based on self-report as well as breath-analyzer and urine screen. In addition, all subjects were screened for cognitive status, using the Mini Mental State Examination (MMSE, Folstein and others 1975).
