| Measurement | Meaning | Previous studies |
|---|---|---|
| Fixation duration (응시 시간) | Duration of all fixations (no eye movement) | |
| Blink count (눈깜빡임 수) | Number of blinks | |
| Scan path length (시선 이동 길이) | The length of gaze positions and eye movements plotted on the stimulus image | |
| Saccade duration (시선의 급격한 이동 시간) | Duration of quick eye movements as the gaze travels from one fixation point to another |