Return to the Neuroscan Interoperability Sample Script page
Script Author: Sean Draine, Ph.D. (email@example.com) for Millisecond Software, LLC
last updated: 11-18-2015 by K.Borchert for Millisecond Software LLC
Copyright © 11-18-2015 Millisecond Software
This script shows how to send markers from the parallel port of the Inquisit presentation computer to a Neuroscan EEG System. Neuroscan requires that the
value of the marker be set on the data register of the parallel port, and a pulse is sent to the control register to indicate the onset of the marker
signal. Between each signal, both data and control registers must be reset to zero. The process for sending a marker requires a value of zero to be sent to both
data and control registers, then sending the marker value to the data register, and finally sending a brief pulse sent to the control register at the point when the marker
should be sent.
To run this script:
1) Connect the parallel port to the Neuroscan EEG System using the custom Neuroscan cable.
2) Check the number of the parallel port you are using. This script assumes LPT1, so if you have a difference port number, search/replace "LPT1" with
whatever your port number is (e.g. "LPT3" for port 3).
3) Click the Run button in Inquisit to run the script
One each trial, marker values of 1, 2, and 3 are sent approximately 500 ms apart.