BackgroundSleep disturbances are a potentially modifiable risk factor for neurodegenerative dementia secondary to Alzheimer disease (AD) and Lewy body disease (LBD). Therefore. we need to identify the best methods to study sleep in this population. ObjectiveThis study will assess the feasibility and acceptability of various wearable devices. https://hollandscountryclothinges.shop/product-category/long-sleeve-t-shirts/