User manual

100 Data Files
© 2005-2008 SR Research Ltd.
command. This is followed by a list of data types and options, selected from the
list below:
Keyword Effect
GAZE includes display (gaze) position data.
GAZERES includes units-per-degree screen resolution (for start, end of event)
HREF includes head-referenced eye position
AREA includes pupil area or diameter
VELOCITY
includes velocity of parsed position-type (average, peak, start and
end)
STATUS
includes warning and error flags, aggregated across event (not yet
supported)
FIXAVG include ONLY averages in fixation end events, to reduce file size
NOSTART start events have no data other than timestamp
The "file_event_data" command may be edited in the DATA.INI file of the
EyeLink 1000 tracker, or may be sent over the link. Some example settings are
given below:
GAZE,GAZERES,AREA,HREF,VELOCITY - default: all useful data
GAZE,GAZERES,AREA,FIXAVG,NOSTART - reduced data for fixations
GAZE,AREA,FIXAVG,NOSTART - minimal data
4.6.3 Event Types
The "file_event_filter" command specified what type of events will be written to
the EDF file. It may be changed in the DATA.INI file of the EyeLink 1000
tracker, or may be sent over the link. The command is followed by a list of data
types and options, selected from the list below:
Keyword Effect
LEFT, RIGHT Sets the intended tracking eye (usually include both LEFT and
RIGHT)
FIXATION includes fixation start and end events
FIXUPDATE includes fixation (pursuit) state update events
SACCADE
includes saccade start and end events
BLINK includes blink start and end events
MESSAGE includes messages (ALWAYS use)
BUTTON includes button 1..8 press or release events
INPUT includes changes in input port lines (not yet supported)
These examples of the command are the default event set, and a fixation-only
configuration:
file_event_filter= LEFT,RIGHT,FIXATION,SACCADE,BLINK,MESSAGE,BUTTON