Saccade Detector Adapter (Feature Request) November 05, 2020 08:26PM |
Registered: 4 years ago Posts: 6 |
Re: Saccade Detector Adapter (Feature Request) November 07, 2020 01:15AM |
Admin Registered: 5 years ago Posts: 871 |
Re: Saccade Detector Adapter (Feature Request) November 13, 2020 02:09AM |
Registered: 4 years ago Posts: 6 |
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Third, I am a bit skeptical about the usefulness of such an adapter. In most cases, saccades are induced by presenting targets at specific locations, so just waiting for eye signals around the targets works well. I don't understand the example scenario you mentioned. If the subject takes multiple saccades to get to the target, the first saccade is probably not even aimed at the target. Are you talking about a case like a subject makes an overshoot or undershoot initially and does a corrective saccade?
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Making a saccade detector is not difficult, but I would rather leave it to individual users for a few reasons. First, there is no single method that works for all situations, especially considering blink detection together. Second, detecting saccades does not work without smoothing and derivative calculations, which are very costly operations to do online. Smoothing also causes variable delays in calculation, depending on the size of the kernel.
Re: Saccade Detector Adapter (Feature Request) November 16, 2020 02:35PM |
Admin Registered: 5 years ago Posts: 871 |
threshold = 0.1; % degrees while true data = get_analog_data('eye',6); % most recent 6 samples degrees_moved = sqrt(sum((data(1,-data(end,).^2)); if threshold < degrees_moved, break, end end
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