Eye Tracker
Equipment Introduction
The Tobii Pro Spectrum eye tracker is equipped with multiple infrared light sources and dual cameras, capable of accurately capturing eye movements at a sampling rate of up to 1200Hz. It maintains accuracy and robust tracking against head movements during data acquisition. The software can automatically identify behaviors, including fixations and saccades, and perform statistical analysis and data visualization by defining areas and time of interest (AOI and TOI). It can also be used in conjunction with EEG, fNIRS, and other devices, and is widely applied in fields such as cognitive neuroscience, reading research, and human-computer interaction.
Specification
| Mode | Human, great ape, monkey, small monkey |
| Sampling frequency | 1200, 600, 300, 150, 120 or 60 Hz |
| Precision | 0.01° RMS (Root mean square sample- to-sample deviation) at optimal conditions (Savitzky-Golay filtering applied), 0.06° RMS at optimal conditions (raw signal) |
| Accuracy | 0.3° at optimal conditions |
| Data sample output | Timestamp, gaze origin, gaze point, pupil diameter, etc. |
| Eye openness stream | has the same frequency as the gaze stream and will have the same timestamps. Eye openness data is provided in millimeters for each eye individually. |
| TTL input stream | 8–bit timestamped data (256 event codes). Event-driven detection with a timestamp accuracy of 50 µs. |
| Operating distance (mounted on screen) | 55 to 75 cm (22” and 30”) from the eye tracker |
| Set up options | (a) Screen and eye tracker mounted together (b) Standalone eye tracker (c) Tracker and screen mounted on any standard VESA mount (d) Eye tracker used with external monitor |