We made adjustments as you suggested, modifying gain, spreading out inner fixation points and adding more fixation points between the inner square and the outer square. It seems to be working so thank you so much for your help.by Anna_mito - Questions and Answers
As you can see in the first picture, the 15 (also16 and 17) calibrated eye position is shifted from the actual one. This implies that kind of rotation I mentioned in the last message of the saccade end point (second picture). Moreover, we noticed that every time we select fixation points in order to calibrate, Matlab give us the following warning message "matrix is close to singular or badlyby Anna_mito - Questions and Answers
Hi, We have some issue with 2D spatial transformation for calibrating eye signal: we noticed that by using more than 5 fixation points (which we need for our experiment in order to test the visual field up to 25-30 degrees) the assigned nulling values shift from the acquired initial ones. For calibration we use the same points structure shown in the picture under the iii paragraph of ML Docs (htby Anna_mito - Questions and Answers