4 ms·
I used to work in eeg and eye tracking software (for neuro-motor rehabilitation and control of robotic arms). Using gaze for fine control is very difficult and
by psychstudio 4y ago
I used to work in eeg and eye tracking software (for neuro-motor rehabilitation and control of robotic arms). Using gaze for fine control is very difficult and terribly unnatural due to saccades and general scene scanning. One easy way to demonstrate how difficult it is is to have a cursor appear at the point of gaze. You're vision "chases" the cursor away from your target like it does a floater. Controlling anything directly with gaze is very very hard.
- jcims 4y agoI always find it odd how smoothly the eye can track something but voluntary movement is herky jerky.
- formerly_proven 4y agoAh you see these are different “hardware features” https://en.m.wikipedia.org/wiki/Smooth_pursuit https://en.m.wikipedia.org/wiki/Smooth_pursuit
- MichaelCollins 4y ago> One easy way to demonstrate how difficult it is is to have a cursor appear at the point of gaze. You're vision "chases" the cursor away from your target like it does a floater. That sounds like a slight miscalibration of the eye tracker. Assuming perfect eye control, if the tracker estimates your gaze slightly incorrectly then the cursor will always move away when you try to look at it.
- brtkdotse 4y ago> Assuming perfect eye control No such thing. The eye does constant micro movements and the brain filters this out. You can compensate for this in software but it lowers the target accuracy.
- dopu 4y agoIt’s no wonder that it takes us many months of training to get monkeys to perform simple saccade-based tasks.