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Digital biomarker of mental fatigue
Vincent Wen-Sheng Tseng1, Nachiappan Valliappan2, Venky Ramachandran2
1Cornell University, Ithaca, NY, USA.
NPJ Digital Medicine
|March 12, 2021
Abstract:
Mental fatigue is an important aspect of alertness and wellbeing. Existing fatigue tests are subjective and/or time-consuming. Here, we show that smartphone-based gaze is significantly impaired with mental fatigue, and tracks the onset and progression of fatigue. A simple model predicts mental fatigue reliably using just a few minutes of gaze data. These results suggest that smartphone-based gaze could provide a scalable, digital biomarker of mental fatigue.
