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

Abstract

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Measurements of the fast and precise movements of the eye—critical to many vision, oculomotor, and animal behaviour 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 450Hz 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.

Keywords

• Saccades
• macaque
• oculomotor control
• eye tracking
• Infant
• eye tracking system