 - If PwD is on any of four classes of psychotropic medications antidepressant, benzodiazepines, antipsychotic, or anti-convulsant or an anti-dementia medication memantine or a cholinesterase inhibitor, we will require that heshe have been on a stable dose for 60 days prior to enrollment typical time frame in clinical trials to minimize possible confounding effects of concomitant medications. 