Tracking

pds.tracking

New method for [eye] tracking to replace device-centric standard (e.g. pds.eyelink, etc)

• enable/disable by setting p.trial.tracking.use (default==true)
  • disable & all standard tracking should behave as normal (fingers crossed)
• uses standard underlying PLDAPS components like p.trial.eyelink or p.trial.mouse
  • defaults to eyelink
• robust to other eyetracking hardware and even other tracking sources (e.g. leap motion)
  • currently coded to be totally interchangeable with .mouse & .eyelink
  • easily extensible to others (use as examples)
• Manages all calibration on matlab-side, for total control of calibration state
  • save/recall different calibrations on-the-fly
  • adjust calibration to changing viewing distance
  • binocular eye tracking
  • subject-specific calibrations are saved locally (inside pldaps root dir: ./rigPrefs/tracking)
• Calibration runs as/within an actual PLDAPS trial
  • utilizing all the same presentation functionality of the real experimental flow
  • GUI figure during calibration for online evaluation of sampled data points & calibration state

Usage

• After beginning experiment, enter pause state by pressing [p] key (as normal)
• From command window, execute pds.tracking.runCalibrationTrial(p)

Follow instructions printed in command window for controls

• Press [zero] key to unhide stimulus
• Press [spacebar] to acquire a sample and move to the next random point
• use number keys to jump to a given location on the 9-point grid
• Press [u] key to update calibration
  • [v] key to validate (i.e. progress through points & reward, but don't record the points into your calibration data
  • continue to acquire more samples until happy with calibration
• Press [p] key to finish calibration, save to file, and return to experiment pause state
• Resuming experiment will use your new calibration!