Selects the preset standard parser setup (0) or more sensitive saccade detector (1). These are equivalent to the cognitive and psychophysical configurations listed below. Note, users should use the select_parser_configuration to change the configuration in a group instead of modifying individual commands separately.
Arguments:
<set>
: 0 for standard, 1 for high sensitivity saccade detector configurationSets velocity threshold of saccade detector: usually 30 for cognitive research, 22 for pursuit and neurological work.
Arguments:
<vel>
: minimum velocity (deg/sec) for saccadeSets acceleration threshold of saccade detector: usually 9500 for cognitive research, 5000 for pursuit and neurological work.
Arguments:
<accel>
: minimum acceleration (deg/sec/sec) for saccadesSets a spatial threshold to shorten saccades. Usually 0.15 for cognitive research, 0 for pursuit and neurological work.
Arguments:
<deg>
: minimum motion (degrees) out of fixation before saccade onset allowedSets the maximum pursuit velocity accommodation by the saccade detector. Usually 60.
Arguments:
<maxvel>
: maximum pursuit velocity fixup (deg/sec)Normally set to 0 to disable fixation update events. Set to 50 or 100 msec. to produce updates for gaze-controlled interface applications.
Arguments:
<time>
: milliseconds between fixation updates, 0 turns offNormally set to 0 to disable fixation update events. Set to 50 or 100 msec. to produce updates for gaze-controlled interface applications. Set to 4 to collect single sample rather than average position.
Arguments:
<time>
: milliseconds to collect data before fixation update for average gaze positionIn general, users should use select_parser_configuration rather than the other commands listed below. The Cognitive configuration is optimal for visual search and reading, and ignores most saccades smaller than 0.5 degrees. It is less sensitive to set up problems. The Pursuit configuration is designed to detect small (< 0.25 degrees) saccades, but may produce false saccades if participant setup is poor.
Cognitive Configuration:
Pursuit and Neurological Configuration: