Acute rehabilitation inpatients with moderate-to-severe brain injury will wear biosensors that track total sleep time and heart-rate variability for up to 1 week. During this time the participants will also complete surveys regarding symptoms of anxiety. The investigators hypothesize that decreased heart rate variability and poor sleep quality will be significantly correlated with higher self-reported anxiety following brain injury.
The investigators predict that decreased heart rate variability and poor sleep quality will be significantly correlated with higher self-reported anxiety following brain injury.