doctor placing electrodes on patient's head for a polysomnography (sleep study) - 電極 個影片檔及 b 捲影像00:15
doctor placing electrodes on patient's head for a polysomnography (sleep study) - 電極 個影片檔及 b 捲影像00:29
1960s black and white medium shot woman sitting at eeg control panel turning knobs / treating women in next room - 電極 個影片檔及 b 捲影像00:08