<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hello Veronique,<div><br></div><div>I believe you can do a lot of that manually by manipulating the data in the EEG variable object from the Matlab command line, but I do much of it ERPLAB, a free EEGLAB plugin. </div><div><br></div><div>you can probably do a lot of what you want using the EEGLAB menus too, but ERPLAB has nice measurement tools for outputting tables of component measurements you can import into R/excel/SPSS, as well as sophsticated event and channel manipulation operations to create/add/subject/etc., new channels: <a href="http://erpinfo.org/">http://erpinfo.org/</a></div><div><br></div><div>In addition to ERPLAB, you can also create difference waves and do multiple t-tests along the waveforms using David Groppe's Mass Univariate ERP Toolbox: <a href="http://openwetware.org/wiki/Mass_Univariate_ERP_Toolbox">http://openwetware.org/wiki/Mass_Univariate_ERP_Toolbox</a></div><div><br></div><div>Both toolsets are very well documented and fairly easy to work with - e.g. at about the same level as EEGLAB.</div><div><br></div><div>Best,</div><div>Andrew</div><div><br></div><div><br><div><div>On Mar 25, 2011, at 10:16 AM, Veronique Boulenger wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div> Dear EEGLab users,<br><br>I am new to EEGlab so I apologize in advance if answers to my questions <br>are obvious. I ran an MMN experiment and would like to subtract 2 <br>conditions to compute a difference waveform (i.e. the MMN). I managed to <br>plot the MMN using Sum/Compare ERPs from the Plot menu but I don't know <br>how to save it as a "new condition" (to do some stats afterwards). Can <br>anyone help?<br><br>Also, I would like to do an ANOVA to compare MMN latency and amplitude <br>between 2 types of contrasts and 2 groups of subjects (2x2 design). For <br>this, I'd like to extract numerical values for peak latency and peak <br>amplitude in a given time-window. Does anyone know how to do it with EEGlab?<br><br>Many thanks in advance for your help!<br><br>Cheers,<br>Veronique Boulenger<br><br>-- <br>Véronique Boulenger, PhD<br>Chargée de Recherches CNRS<br>Laboratoire Dynamique du Langage – UMR 5596<br>Institut des Sciences de l’Homme<br>14 avenue Berthelot<br>F69363 Lyon Cedex 07<br><br>(33) 04.72.72.79.24<br>(33) 04.72.72.65.90<br><a href="mailto:veronique.boulenger@ish-lyon.cnrs.fr">veronique.boulenger@ish-lyon.cnrs.fr</a><br>http://www.ddl.ish-lyon.cnrs.fr/Annuaires/Boulenger<br><br><br>_______________________________________________<br>Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html<br>To unsubscribe, send an empty email to eeglablist-unsubscribe@sccn.ucsd.edu<br>For digest mode, send an email with the subject "set digest mime" to eeglablist-request@sccn.ucsd.edu<br></div></blockquote></div><br></div></body></html>