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3.4
Calibration ......................................................................................... 42
3.5
Validation .......................................................................................... 47
3.6
Recording Gaze Position ..................................................................... 49
3.7
Drift Correction .................................................................................. 49
3.8
Exiting EyeLink II............................................................................... 51
3.9
EyeLink II Setup Summary................................................................. 51
3.10
Experiment Practice ........................................................................ 52
3.11
Next Steps: Other Sample Experiments............................................ 52
4.
Data Files ............................................................................................................. 56
4.1
File Contents...................................................................................... 56
4.2
Recording EDF Files ........................................................................... 57
4.2.1
Recording from the EyeLink II Host PC....................................................... 57
4.2.2
Recording from the EyeLink API ................................................................. 57
4.3
The EyeLink On-Line Parser ............................................................... 57
4.3.1
Parser Operation ......................................................................................... 57
4.3.2
Parser Limitations........................................................................................ 58
4.3.3
EyeLink Parser Configuration...................................................................... 58
4.3.4
Parser Data Type ........................................................................................ 59
4.3.5
Saccadic Thresholds ................................................................................... 59
4.3.6
Pursuit Thresholds ...................................................................................... 60
4.3.7
Fixation Updates ......................................................................................... 60
4.3.8
Other Parameters ........................................................................................ 61
4.3.9
Sample Configurations ................................................................................ 61
4.4
File Data Types .................................................................................. 62
4.4.1
Samples....................................................................................................... 62
4.4.2
Position Data ............................................................................................... 63
4.4.3
Pupil Size Data ............................................................................................ 66
4.4.4
Button Data.................................................................................................. 66
4.5
Events ............................................................................................... 66
4.5.1
Messages .................................................................................................... 67
4.5.2
Buttons ........................................................................................................ 67
4.5.3
Eye Movement Events................................................................................. 67
4.6
Setting File Contents .......................................................................... 71
4.6.1
Sample Data................................................................................................ 72
EyeLink II User Manual (07/02/2006) © 2002-2006 SR Research Ltd.
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