The intervention is for participants to wear the study device (nuroflux) as soon as possible after initial diagnostic imaging (baseline) and for at approximately 24 hours until the completion of their routine Day 1 National Institutes of Health Stroke Scale (NIHSS) assessments and brain scanning, occurring at approximately 24 hours after initial diagnostic imaging are completed. The device will be fitted, checked on, and removed by ED/Stroke ward nurses. A semi-circular ring is fitted across the