Dear Pragati Rao,
Enclosed is a tutorial review with links to code (slides 146-174 are most relevant). The .wav cue approach to triggers is most effective with NBS presentation, though I have known people have problems with there being a dynamics to the port code onset to event onset delay and its jitter through the course of the paradigm, particularly with large numbers of port codes. This can happen even when the timing seems fine at first. Initial clues to this may be seen with a dry run of the paradigm when looking at the uncertainties in the log file Recommended is to record a trigger channel and the sound signal via multichannel oscilloscope for the whole dry run and then analyze this to assay if there is such a dynamics. You do want that delay to be constant within limits that are suited to your EEG sample rate and the ERP deflections of interest.
Date: Fri, 6 Sep 2013 08:36:10 +1000http://www.ling.mq.edu.au/cll/team.html
Amusia and Tonal languages.pptx
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