Figure 4.

Wearable EOG detection device and application. (A) Six muscles control the fine-motor movements of each eye [93]. (B) Electrooculography (EOG) signals are positive when the eyes move toward the right (horizontally). In contrast, EOG signals are negative when the eye moves to the left [91,92]. (C) Several goggles and sensors have been developed to detect EOG signals [10,94,95,96]. (D) After data analysis, the wearables for detecting EOG could be applied in fatigued driving prevention [97], stress relief and PTSD treatment. Moreover, EOG wearables can be used as research equipment to explore the mechanisms of reading, attention, scene perception, auditory language processing, psychological pressure and emotional identification.