The center accepts donations from participants in longitudinal or clinical studies. Phenotypes collected include Alzheimer's disease, family history of Alzheimer's, cognitively normal, cognitively healthy, dementia with Lewy bodies, frontotemporal dementia, tauopathy, Parkinsons', and any other neurodegenerative/neurological or psychiatric disease. Tissue collected postmortem: whole brain, hemisphere, spinal cord. Samples are available to researchers fixed or frozen.