saccadeThreshold attribute

The saccadethreshold attribute specifies the saccade angular velocity threshold in degrees per second used in determining when a fixation is completed.

Member of

Syntax

/ saccadeThreshold = saccadethreshold

Parameters

Name	Type	Description
saccadethreshold	number	The saccade velocity threshold to use in the real-time calculation of fixation points.

Remarks

If the eye moves faster than the threshold it indicates a potential saccade and the end of the current fixation. The default value is 30's.

Examples

The following sets the saccade velocity threshold to 35 degrees per second with a Tobii eye tracker:

<eyetracker>
/ plugin = "tobii"
/ saccadethreshold = 35
</eyetracker>

The following sets the saccade velocity threshold to 35 degrees per second with an EyeLink eye tracker:

<eyetracker>
/ plugin = "srresearch"
/ saccadethreshold = 35
</eyetracker>