MRI completed on 09/30/09 showed "mild cerebral and cerebellar atrophy with no significant interval change from a prior study dated June 15, 2007.  No evidence of acute intracranial processes identified.  CT scan was also unremarkable showing only mild cerebral and cerebellar atrophy.  EEG was negative.  Deferential diagnosis was transient global amnesia versus possible seizure disorder.  Note that he also reportedly has some hearing changes, but has not followed up with an evaluation for hearing aid.