Which eye movement term refers to the tracking and observation of eye motion in a visual field?

The term that best describes the tracking and observation of eye motion in a visual field is "gaze." Gaze refers to the direction in which a person is looking and can provide insights into the focus of attention and the exploration of visual scenes. It encompasses the overall observation of where the eyes are aimed and how they move across a visual field, making it an important concept in understanding user behavior and experience design.

While fixation refers specifically to the point where the eyes momentarily rest to gather information, and scanning involves the sequential movements of the eyes across a visual area, gaze captures the broader idea of visual attention and direction. Tracking could imply following the movement of an object over time, but it does not fully encompass the broader observation of eye direction like gaze does.