<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Dear Muhammad,<div><br></div><div>to rephrase Makoto's message, if you have two groups of subjects of unequal size and these subjects are paired, then there is a problem (if the data is paired then the two groups cannot have unequal size). If this is not the case, please submit a bug report at <a href="http://sccn.ucsd.edu/eeglab/bugzilla">http://sccn.ucsd.edu/eeglab/bugzilla</a> so we can investigate the issue more in depth.</div><div>Thanks,</div><div><br></div><div>Arno</div><div><br><div><div>On 26 Nov 2012, at 09:43, Makoto Miyakoshi wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">Dear Muhammad,<div><br></div><div>This is just a guess. Please check your study design. Are you not using 'paired statistics' even for groups?</div><div><br></div><div>Makoto<div><br><div class="gmail_quote">2012/11/19 M Abul Hassan <span dir="ltr"><<a href="mailto:abulhassan85@yahoo.com" target="_blank">abulhassan85@yahoo.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td valign="top" style="font:inherit"><div style="DIRECTION:ltr">
<font color="#000000" face="Tahoma">Dear all,</font></div>
<div style="DIRECTION:ltr"><font face="tahoma"></font></div>
<div style="DIRECTION:ltr"><font face="tahoma">I have created a STUDY with 3 groups and 2 conditions on CONTINUOUS data and want to compare spectrums of three groups. I am trying to use '''subtract individual subject mean spectrum ' but I get the following error</font></div>
<div style="DIRECTION:ltr"><font face="tahoma"></font></div>
<div style="DIRECTION:ltr"><font color="#000000" face="Tahoma"><b>Problem while subtracting mean spectrum.<br>Common spectrum subtraction is performed based on<br>pairing settings in your design. Most likely, one<br>independent variable should not have its data paired.</b></font></div>
<div style="DIRECTION:ltr"><font color="#000000" face="Tahoma">I am using Matlab<a></a> xx and EEGlab<a></a><a></a> xxx</font></div>
<div style="DIRECTION:ltr"><font face="tahoma"></font></div>
<div style="DIRECTION:ltr"><font face="tahoma">Does anybody else had this problem?</font></div>
<div style="DIRECTION:ltr"><font face="tahoma">Thanks</font></div>
<div style="DIRECTION:ltr"><font face="Tahoma">Best Regards</font></div>
<div style="DIRECTION:ltr"><font face="Tahoma">Muhammad Abul Hasan</font></div></td></tr></tbody></table><br>_______________________________________________<br>
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-- <br>Makoto Miyakoshi<br>JSPS Postdoctral Fellow for Research Abroad<br>Swartz Center for Computational Neuroscience<br>Institute for Neural Computation, University of California San Diego<br><br>
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