The biometric data that you collect, e.g. from EEG or eye tracker, is vastly more useful when it includes markers that tell you exactly when certain events occurred.
StimTracker can detect the onset of these events and send them to several recorders simultaneously.
StimTracker detects the onset of events in behavioral research, and does so autonomously to avoid operating system delays; see also StimTracker Duo vs. Quad.
Onset of Visual Stimuli
Fast light sensors included.
Onset of Key Response
Connect a response pad to mark participants’ input.
Onset of External Events
Connect switches or TTL signals (Quad only).
Onset of Auditory Stimuli
Play audio via StimTracker and let it do the rest.
Onset of Vocal Response
It’s like getting a free voice key device (Quad only).
Event Codes via USB
Send event codes from your stimulus software.
StimTracker uses m–pod to deliver its signals. This augments StimTracker’s capabilities and provides compatibility with a wide range of recorders:
When sending event markers via USB, StimTracker delivers them with jitter free precision when used with SuperLab 6 or with our open source Python or C++ libraries.
Delay is guaranteed to be 2ms exactly, every time.
A powerful 32-bit microprocessor running our software lets StimTracker send event markers via USB asynchronously. Without this feature, software that wants to send a 10ms long event marker has to pause execution for 10ms. In neuropsychology, psychophysiology, and other fields, this is too long of a pause. With StimTracker, the software sends a command and resumes other time-sensitive tasks – no pausing.
There are other powerful features such as a pulse scheduler and pattern generator;
see Specifications.
Some audio stimuli are computer generated tones. Others are recorded words or sentences. Visual stimuli vary as well, as do the displays being used to present them. StimTracker includes powerful filtering options to handle all sorts of signals. Cedrus provides free software for setting the filter values, which StimTracker then stores in its flash memory.
StimTracker enjoys extensive software support. Some packages can deliver jitter free performance.
Cedrus worked closely with CGX Systems (formerly Cognionics) to develop an integrated solution. The result, Wireless StimTrigger, allows you to send event markers wirelessly and with high timing precision to all currently shipping CGX EEG devices. Wireless StimTrigger is available directly from CGX.
Contact us if you need a custom solution.
StimTracker ships complete and ready to use. Package includes:
And an m-pod model of your choice.
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