Does your sleep tracker get it right? A Pittsburgh neuroscientist weighs in

Can a sensor on your wrist really tell how your brain slept? Here’s what happens when sleep trackers go up against polysomnography, the clinical gold standard.

By: J. David Creswell, Carnegie Mellon University, The Conversation

Outlets: The Conversation

Published: October 6, 2026

Words: 1,270

Last Updated: 1 week, 4 days ago

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By J. David Creswell, Carnegie Mellon University

On a typical night, I go to bed wearing a tracking watch on one wrist and another type of tracker on the other wrist. Then I compare their sleep findings while I drink my morning coffee.

I direct the Center for Modern Digital Health at Carnegie Mellon University in Pittsburgh, where my team and I study how to use wearables to improve health and performance. My lab’s …

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