Problem Topics

The MQP appears to be a nifty tool for eye-tracking functionality in either gaming or research studies. However, as a general VR user, I have some remaining quandaries about the quality of the MQP’s eye tracker.

Accuracy and Precision

I’m curious about the overall accuracy and precision about the eye tracker itself. Is there any way to quantify these properties?

Head VS Eye Rotation Differences

Another quandary I want to explore is something more niche. One of my colleagues is interested in replicating the head and eye rotation that occurs during natural locomotion - i.e. when something gets our attention and we rotate our body, head, and eyes to fixate on that item. I am curious about to what extent a fixation target is outside at the periphery of one’s view to require a user to rotate their head and eyes. During such a motion, if the head and eye are both in free movement, to what extent do the eye and head separate?

Electroencephalography: Baseline EEG Responses to Eye Rotations

I want to aggregate a collection of EEG responses to eye movements, in order to conduct some form of template filtering when looking at EEG signals in more natural conditions. This EEG data can be aggregated using wearable EEG devices such as the Muse S, but the important quality is that

Related Works

Naturalistic Eye-Head-Body Physiology

<aside> 📃

Majority of this information is cited from the related works of this paper: https://doi.org/10.1145/3361218

</aside>

Physiological Range of Motion

• For healthy adults, eyes have a motion range of $50\degree$ in any direction [reports from 1999 and 2012]. The total FOV of human vision is $210\degree$ horizontally and $120\degree$ vertically ($50\degree$ upward, $70\degree$ downward).
• The neck has a $80\degree-90\degree$ motion range horizontally and $60\degree-70\degree$ vertically [2002 report].
• “Eyes and head together thus provide a movement range of around 130–140° in the horizontal axis and 110–120° in the vertical axis” (*https://doi.org/10.1145/3361218,* Pg. 3)
• “Gaze shifts extending less than 20° are almost entirely made by the eye movement” (*https://doi.org/10.1145/3361218,* Pg. 3, references 2008, 1997, and 2012].
• “While the eyes have a physical range of 50°, it has been found that they rarely rotate beyond 30° relative to the head” [*https://doi.org/10.1145/3361218,* Pg. 4, references 2012]. “In natural tasks, the head contributes about ⅓ to gaze shifts of up to 30°, and more to gaze shifts that are larger” [*https://doi.org/10.1145/3361218,* Pg. 4, references 2011].