[Eeglablist] How to do the MMN substraction?

[Thomas, Robin D. Dr.]

There is a plug in application that integrates with EEGLAB well (also a free download at http://erpinfo.org/erplab) called ERPLAB produced by Stephen Luck's lab that has functionality specifically tailored for ERP processing I would recommend. 

Robin D. Thomas, Ph.D.
Director, Center for Human Psychophysiology
Brain and Cognitive Science Program
Department of Psychology
Miami University
Oxford, OH 45056
________________________________________
From: eeglablist-bounces at sccn.ucsd.edu [eeglablist-bounces at sccn.ucsd.edu] On Behalf Of PengMin Qin [qin.pengmin at gmail.com]
Sent: Tuesday, March 20, 2012 4:21 PM
To: eeglablist at sccn.ucsd.edu
Subject: [Eeglablist] How to do the MMN substraction?

Hello,

I am fresh user of EEGLab. I have one mismatch negativity dataset. I need to substract ERP of the 'standard stimuli' from ERP of the 'oddball stimuli' to the get the mismatch negativity waveform. How to do this substraction by using of EEGLAB?

There is another question about ITC. I generated the "####.datitc" file for each participant by using "study -> precompute channel measures". Beside the EEG data, we also acquire behavioral data. I plan to draw the ITC results to do the correlation between ITC data and behavioral data. As I understand, the ITC should be a value from 0 to 1. But when I open the "####.datitc" file, I did not find the value from o to 1, but a value like "-0.1653+0.0860i". How to use the ITC data?  How to do the correlation between ITC and behavioral data?

Thank you very much!!

Best,
Pengmin