This support note applies to using m-pod with Neuroscan’s Grael EEG amplifier. Information about about connecting m-pod to Neuroscan EEG systems that accept 16 bits of external triggers is available on a separate page.

m-pod for Neuroscan Grael connects to the Grael Trigger Module (Compumedics part no. 8028-0006-1). Note: the Grael PSG model does have a trigger input.

Internally, the Grael and the Neuroscan 16-bit variants of m-pod share the same hardware. You can change the configuration if needed.

Using SCAN

Neuroscan’s SCAN software has been superseded by Curry, and m-pod’s interface to Neuroscan hardware was developed long after SCAN’s last major release. Consequently, only Trigger bits 0-7 can be detected by SCAN.

Using Curry 7.0.5 or later

Curry version 7.0.5 or later implements direct support for StimTracker, which can also be used for m-pod support. To use:

The Trigger Settings dialog (screen) appears. Select the Cedrus StimTracker radio button.

Ground is on DB25 pin 25.

When Connected to a Riponda or RB-x40 Response Pad

m-pod contains a powerful microprocessor that can reassign any input signal to any output line, and without any significant delay. It can also assign multiple signals to the same output line.

The tables above describe the factory default. If your experiment or lab setup requires different output, Cedrus provides a free utility for configuring your m-pod. After you use it, your configuration is saved to flash memory so that it’s remembered even after you power off m-pod.

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