July 18, 2026

@michaelokun

How do you choose the best sleep sensor for Parkinson's disease and neurodegenerative disorders? Actigraphy refers to wearable sensors that estimate sleep, movement and potentially related measures. Manon Mijnsbergen and colleagues describe in a new paper in npj Parkinson's Disease how wearable movement sensors can objectively monitor sleep and nighttime movement in Parkinson's disease and what is needed to make these tools more accurate and useful in research and clinical care. Key points: - Wearable movement sensors can reliably detect differences in nighttime sleep and movement between folks w/ Parkinson's disease and healthy controls, making them valuable research and clinical tools. - At least seven consecutive nights of monitoring, appropriate sensor placement and Parkinson's disease specific algorithms appear essential for obtaining reliable and meaningful data. - Wrist-worn actigraphy performs well for estimating many sleep measures, however specialized sensor placement may be better for evaluating specific nighttime problems such as difficulty turning in bed or getting out of bed. My take: This is a nice practical reviews on sleep monitoring in Parkinson's disease. We are moving beyond simply asking folks how they slept. Wearable technology now allows us to measure sleep in the home over multiple nights, capturing a more realistic picture of nighttime function. The next frontier is already evolving in combining movement sensors w/ heart rate, temperature and other biomarkers, along w/ Parkinson's disease specific algorithms, to create personalized sleep monitoring that truly guides care. Remember that total sleep time is really important and we tell folks in my clinic to shoot for ~6-8 hours if possible. Here are 3 points that resonated w/ me: 1- Choose a wearable that has been validated in Parkinson's disease rather than assuming every consumer sleep tracker performs equally well. 2- Record sleep for at least seven nights because one night rarely reflects the true pattern of sleep in Parkinson's disease. 3- Match the sensor to the clinical question. A wrist sensor may be ideal for estimating sleep, while other sensor locations have special advantages.