Clinical Research Directory

Inclusion Criteria: * Diagnosis of stroke as defined by the WHO: "a rapid onset event of vascular origin reflecting a focal disturbance of cerebral function, excluding isolated impairments of higher function and persisting longer than 24 hours." Diagnosis of stroke will be confirmed by imaging or clinical diagnosis. * Age 18 or older. * Admitted to in-patient rehabilitation. * National Institutes of Health Stroke Scale (NIHSS) item 1a score \<2 (Level of consciousness: 0=alert, 1=not alert, but arousable by minor stimulation to obey, answer, or respond). * Provision of informed consent by individual or by legally authorized representative. Exclusion Criteria: * Pre-stroke or current diagnosis of OSA or other sleep-related breathing disorder. * Living in a nursing home or assisted living center prior to the stroke. * Unable to ambulate 150' independently prior to the stroke. * Other neurologic health condition that may impact recovery such as Parkinson Disease, Multiple Sclerosis, Traumatic Brain Injury, Alzheimer's Disease. * Women who are pregnant. * Recent hemicraniectomy or suboccipital craniectomy (i.e. those whose bone has not yet been replaced), or any other recent bone removal procedure for relief of intracranial pressure. * Planned discharge location \>150 miles radius from recruitment site * Global aphasia as defined by a NIHSS item 9 score of 3 (3= Mute, global aphasia; no usable speech or auditory comprehension). * Inability to understand English