A wireless health-monitoring system that detects early signs of traumatic brain injury by continuously monitoring various brain and neural functions has been developed by engineers. "Wearable nanosensor systems can detect the severity of head injury by quantifying force of impact, be it light or violent," said an expert involved in the study. "In real time, our system continuously monitors neural activity and recognizes the signs and symptoms of traumatic brain injury, such as drowsiness, dizziness, fatigue, sensitivity to light and anxiety."