Drowsiness detection by skin potential activity

Conventional drowsiness detection devices are usually equipped with infrared LEDs and CCD cameras; however, they are adversely affected by factors such as ambient light and the use of eyewear. Drowsiness detection by other methods would thus improve such devices. This study examines skin potential activity, which is not affected by the aforementioned factors. Response performance during monotonous work using visual stimuli was quantified as drowsiness and compared with skin potential activity.