Acupuncture to Reduce Anxiety in Alzheimer's Disease (AD) and AD Related Dementias

Inclusion Criteria: * Ages 55-95 inclusive, male or female. * Diagnosis of CU, or probable AD, FTD or DLB as determined by established clinical criteria at screening14. * For the AIA symptomatic groups, a score of \> 2 for Severity on at least 1 of the AIA-relevant items on the NPI-Q, i.e., Anxiety, Irritability/Lability, Agitation or Aggression. * For the CU and no neuropsychiatric symptoms group, NPI-Q score must be 0 for AIA-relevant items, i.e., Anxiety, Irritability/Lability, Agitation or Aggression. * No concurrent use of therapies with prohibitive effects on interpretation of HRV and SC measurements, e.g., those with major direct adrenergic or anticholinergic activities. * Stable doses (\>2 weeks) of concurrent dementia or psychiatric drugs for those applicable. Exclusion Criteria: * Atrial or junctional arrhythmias or other cardiac conditions, including pacemakers or other implantable devices that affect RR intervals or their measurement. * AIA symptoms or dementia so severe that subject cannot assent and cooperate with all study procedures or requires immediate rescue medication for behavioral control. * Seizure disorders or other potentially confounding medical, neurological or longstanding psychiatric illnesses.