Construction and Operation of a High-Speed, High-Precision Eye Tracker for Tight Stimulus Synchronization and Real-Time Gaze Monitoring in Human and Animal Subjects.
Measurements of the fast and precise movements of the eye-critical to many vision, oculomotor, and animal behavior studies-can be made non-invasively by video oculography. The protocol here describes the construction and operation of a research-grade video oculography system with ~0.1° precision over the full typical viewing range at over 450 Hz with tight synchronization with stimulus onset. The protocol consists of three stages: (1) system assembly, (2) calibration for both cooperative, and for minimally cooperative subjects (e.g., animals or infants), and (3) gaze monitoring and recording.
Department of Ophthalmology, McGill Vision Research Unit, McGill UniversityMontreal, QC, Canada; Research Institute of the McGill University Health CentreMontreal, QC, Canada.
Reza
R
Farivar
Department of Ophthalmology, McGill Vision Research Unit, McGill UniversityMontreal, QC, Canada; Research Institute of the McGill University Health CentreMontreal, QC, Canada.
Danny
D
Michaud-Landry
eye tracker; gaze contingent; infant; macaque; microsaccades; oculomotor control; saccades; smooth pursuit
Behav Res Methods. 2013 Sep;45(3):684-95
23239074
Vision Res. 2016 Jan;118:83-97
25689315