09-03-2020, 09:40 AM
It is important to keep in mind that due to the nature of the EyeLink's parsing algorithm, blinks are always embedded within a saccade. This is because as the eyelid descends the size of the visible pupil decreases, triggering the saccade parser. There are several options related to blinks and their associated saccades in the Data Viewer preferences (Preferences tab in the Inspector window -> Data Filters). Some of the setting are Event related and others are Sample related.
The Event related properties are:
The Event related properties are:
- Display Blink Saccades - This property will display any saccade event that contains a blink entirely as a blink instead of a saccade leading into and out of a blink.
- Remove Fixation Immediately Before Blink - This property will allow for the exclusion of the fixation before a blink occurs
- Remove Fixation Immediately After Blink - This property will allow for the exclusion of the fixation after a blink occurs
- Duration to Exclude Before Blink Saccades - This property will exclude the samples prior to the blink event for the specified duration
- Duration to Exclude After Blink Saccades - This property will exclude the samples after to the blink event for the specified duration
- Apply Blink Correction in the Sample Report - This property will mark the excluded samples from the properties above as being *_IN_BLINK = TRUE in the same report