Abstract
Relations between psychological status and eye movements are found through experiments with readings of different types of documents as well as playing games. Psychological status can be monitored with Electroencephalogram: EEG sensor while eye movements can be monitored with Near Infrared: NIR cameras with NIR Light Emission Diode: LED. EEG signals are suffred from noises while eye movement can be acquired without any influence from nise. Therefore, psychlogical status can be monitored with eye movement detection instead of EEG signal acquisition if there is relation between both. Through the experiments, it is found strong relation between both. In particular, relation between the number of rapid changes of line of sight directions and relatively high frequency components of EEG signals is found. It is also found that the number of rapid eye movement is counted when the users are reading the documents. The rapid eye movement is defined as 10 degrees of look angle difference for one second. Not only when the users change the lines in the document, but also when the users feel a difficulty for reading words in the document, the users’ line of sight direction moves rapidly.
Highlights
Nowadays, the eye-based HCI has been widely used to assist handicap person and for a normal person
Prof Stephen Hawking, who was diagnosed with Athe proposedotrophic Lateral Sclerosis (ALS), uses an electronic voice synthesizer to help him communicate with others [7]
When the users change the lines in the document, and when the users feel a difficulty for reading words in the document, the users’ look direction moves rapidly
Summary
The eye-based HCI has been widely used to assist handicap person and for a normal person. Eye mouse by utilizing sight obtained from pupil location and detected by using Haar Classifier (OpenCv function) is developed [9]. It used blinking for replacing left click of mouse event. Human-computer interface by integrating eye and head position monitoring devices is developed [11] It controlled the interface based on sight and blinking. They modified calibration method for reducing visual angle between the center of target and the intersection point (derived by sight) They reported that the modification allowed 108 or higher number of command blocks to be displayed on 14 inch monitor. Relations between eye movement and psychological status are described followed by conclusion with discussions
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