Sleep Disordered Breathing and Alzheimer's Disease Biomarkers in Normal Aging and Mild Cognitive Impairment

The purpose of this study is to determine the sleep patterns of subjects with or without sleep disturbances (insomnia, sleep apnea) and compare these findings with their previous FDG/PIB PET, structural MRI and brain blood flow scams performed during their participation in the Following studies 'Alzheimer's Disease Core Center (ADCC) Clinical Evaluation' (IRB: 2942), MRI Progression Markers of Cognitive Decline in the Elderly' (IRB:09-0586), or 'Imaging Neuro inflammation in Alzheimer's Disease with \[11C\] Arachidonic Acid (AA) and PET'(IRB: 10-00442).