Saccade EventMarker

I would like to ask if there is a way to add an EventMarker indicating the initiation of a saccade in the timing file of a task.

If you are scripting in the v1 style, you can monitor the eye position around the initial fixation point with eyejoytrack('holdfix',...) and, as soon as it returns with 0 (i.e., when the fixation is broken), call eventmarker.

However, I advise against this unless you have a compelling reason to detect saccades in real time. Whenever possible, it is better to analyze saccades offline. Saccades are typically identified using a velocity threshold (e.g., eye movements faster than 30 deg/s), but calculating velocity often requires accumulating eye position data to reduce noise and cannot be done without some delay.

Thank you for your help.