Tobii Pro Spectrum provides some of the most precise gaze measurements available today by combining cutting-edge optical and processing technology with fast eye tracking hardware. Researchers can choose the temporal resolution most suitable for their experiment thanks to the system's support for several sampling frequencies of 60, 120, 150, 300, 600, and up to 1200 Hz. Both traditional behavioral studies and highly specialized research involving quick eye movements and physiological measures are made possible by this flexibility.

Eye Tracking Technology

Tobii Pro Spectrum employs video-based pupil and corneal reflection eye tracking using both:

• Bright-pupil illumination mode

• Dark-pupil illumination mode

The system uses:

• Two high-speed stereo cameras

These continuously capture images of both eyes, allowing accurate three-dimensional estimation of:

• Gaze position

• Pupil diameter

• Gaze origin

• Eye openness

The binocular design improves robustness against natural head movement while maintaining high data quality across diverse participant populations.

Eye Tracking Specifications

Tobii Pro Spectrum supports the following sampling frequencies:

• 60 Hz

• 120 Hz

• 150 Hz

• 300 Hz

• 600 Hz

• Up to 1200 Hz

This flexibility enables both conventional behavioural studies and highly specialized research involving rapid eye movements and physiological measurements.

Performance Specifications

Under optimal conditions, Tobii Pro Spectrum delivers:

• Median gaze accuracy: Approximately 0.3°

• Precision: As low as 0.01° RMS

• Mean system latency: Below 2 milliseconds at 1200 Hz

• Immediate blink recovery: Within one frame

• Gaze recovery: Less than 150 milliseconds

These specifications make the system particularly suitable for experiments requiring precise synchronization between gaze behaviour and rapidly changing stimuli.

Participant Freedom

The system provides:

• Head movement box: Approximately 34 × 26 cm at 65 cm viewing distance

• Operating distance: 55–75 cm when mounted with a monitor

The binocular design supports natural head movement while maintaining reliable eye tracking performance.

Display Compatibility

Tobii Pro Spectrum is supplied with:

• Recommended 23.8-inch Full HD monitor

Researchers can also integrate the tracker with:

• Other displays

• Real-world stimulus setups

depending on experimental requirements.

Installation & Participant Setup

Installation is straightforward, with participant setup typically taking:

• Less than one minute

Summary

In order to provide extremely accurate eye tracking for cutting-edge scientific and behavioral research, Tobii Pro Spectrum combines video-based pupil and corneal reflection eye tracking, bright-pupil and dark-pupil illumination, two high-speed stereo cameras, sampling rates from 60 Hz to 1200 Hz, 0.3° median gaze accuracy, 0.01° RMS precision, sub-2 millisecond system latency, a 34 × 26 cm head movement box, and support for 23.8-inch Full HD or custom display setups.

If you want to learn more about eye tracking technologies connect us on www.tidentech.com or feel free to ask us on parag@tidentech.com or tidentech@gmail.com call us on +91 9987442274.