Memory loss benzodiazepines vs narcotics

This study compares the effect of benzodiazepines to narcotics on EEG, memory quotient, and WAIS testing. Valium, Librium, Dalmane and other benzodiazepines produced EEG and cognitive abnormalities in 70% of the patients, while only 30% of patients on narcotics had cognitive impairment.and EEG abnormalities.