StimTracker

Cedrus® StimTracker enables reliable and precise timestamping of visual and auditory events and participant responses, synchronizing them with eye-tracking data from the Tobii Pro Spectrum system – with millisecond accuracy.

Stimulus synchronization

Precise
synchronization.

StimTracker is a device for hardware synchronization of visual and auditory stimuli and participant responses with neurophysiological data. Sub-1-millisecond accuracy eliminates systemic software delays that can distort experiment results.

StimTracker

Synchronization without delays

Hardware stimulus detection with <1 ms accuracy — elimination of temporal artifacts in multimodal research.

< 1 ms accuracy

An optical sensor on the screen detects the moment a stimulus appears with hardware precision — regardless of operating system or graphics card delays.

Visual and audio detection

Optical sensor for visual stimuli plus detection of the onset of auditory stimuli. Independent of the presentation software.

8 TTL channels

Eight independent TTL outputs for synchronization with EEG, fMRI, eye-tracking, GSR and any neurophysiological recording systems.

StimTracker

No
delays.

StimTracker eliminates a fundamental problem in multimodal research — the uncertainty of temporal synchronization between stimulus presentation and response recording. Hardware detection provides accuracy impossible to achieve with software methods.

< 1 msAccuracy
8 channelsTTL outputs
USBInterface

Technical parameters

Synchronization accuracy< 1 ms
Stimulus detectionVisual (optical sensor), audio
TTL outputs8 channels
InterfaceUSB 2.0
CompatibilityEEG, fMRI, eye-tracking, GSR, EMG
SoftwareStimTracker Quad, E-Prime, PsychoPy, MATLAB

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with us.

We will help you choose the right solution for your research goals and prepare a quote for StimTracker.

INTERLAB Sp. z o.o.

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Exclusive Tobii distributor in Poland, the Czech Republic and Slovakia
© 2026 Interlab Sp. z o.o.
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Product: StimTracker