1. 제목 : What can we do by monitoring cerebral hemodynamics?

2. 연사: 김재관 교수 (광주과학기술원 의생명공학과)

3. 일시: 2017년 05월 31일 (수) 16:30~17:45

4. 장소: 양분순 빌딩 계단식 강의실 (207호)

5. 초록:

 Understanding our brain is one of the hot topics in biomedical research field, and a few tools are available to monitor brain activities either direct or indirect way. Monitoring cerebral hemodynamics is indirect way of observing neuronal activity, which can be provided by optical imaging or spectroscopy. In this presentation, I will introduce two studies in our lab, in which both have monitored cerebral hemodynamics. In the first study, we acquired EEG and functional near-infrared spectroscopy (fNIRS) signals from subjects when they had a simulated driving. The results showed that combination of EEG and fNIRS signals improved the accuracy of classification (awake vs sleepy), and it can predict drivers’ drowsiness earlier than the eye closures by 3~4 seconds. The other study utilizes an optical intrinsic signal imaging (OISI) system to monitor the cerebral hemodynamic response during transcranial ultrasound stimulation (tUS) on a mouse brain. The results show that cerebral hemodynamic response varies depending on the parameters of tUS, which proves the usefulness of OISI as a tool of optimizing the conditions of brain stimulation.