“…Recently, more and more machine learning-based methods have emerged due to the advancement of artificial intelligence. Some methods focused on visually-induced simulator sickness predictions [25-27, 34, 43] while others investigate physiological signals, including postural sway, gait motion, heart rate, breathing rate, galvanic skin response, and electroencephalogram (EEG) data [10,16,18,30,32,35,51], or the combination of visual content information and physiological signals [28,31,33]. For visual-based machine learning methods, gameplay video will always be analyzed first to extract the raw features of depth and optical flow, and then input them into the deployed machine learning method to regress simulator sickness level or classify simulator sickness arousal.…”