<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
Hi David<br>
<br>
in the LIMO EEG toolbox
(<a class="moz-txt-link-freetext" href="https://gforge.dcn.ed.ac.uk/gf/project/limo_eeg/">https://gforge.dcn.ed.ac.uk/gf/project/limo_eeg/</a>) we tend to plot
an imagesc like of the F tests (ie all electrodes and time frames)
and then the relevant electrode (for instance the one showing
earliest effect or max effect) - on the plot we have confidence
intervals and nice little stars to show where the effect is (given
the multiple comparison correction applied)<br>
<br>
you can see the plots in the manual to give you an idea<br>
<br>
Cyril<br>
<br>
<br>
<pre wrap=""><div class="moz-txt-sig">
</div></pre>
<br>
<fieldset class="mimeAttachmentHeader"><legend
class="mimeAttachmentHeaderName">ForwardedMessage.eml</legend></fieldset>
<table class="header-part1" border="0" cellpadding="0"
cellspacing="0" width="100%">
<tbody>
<tr>
<td>
<div class="headerdisplayname" style="display:inline;">Subject:
</div>
[Eeglablist] Average the F and p-values?</td>
</tr>
<tr>
<td>
<div class="headerdisplayname" style="display:inline;">From:
</div>
david grahms <a class="moz-txt-link-rfc2396E" href="mailto:david.grahms@gmail.com"><david.grahms@gmail.com></a></td>
</tr>
<tr>
<td>
<div class="headerdisplayname" style="display:inline;">Date:
</div>
11/02/2013 11:12</td>
</tr>
</tbody>
</table>
<table class="header-part2" border="0" cellpadding="0"
cellspacing="0" width="100%">
<tbody>
<tr>
<td>
<div class="headerdisplayname" style="display:inline;">To: </div>
<a class="moz-txt-link-abbreviated" href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a></td>
</tr>
</tbody>
</table>
<br>
<div class="moz-text-html" lang="x-western">
<div dir="ltr">
<div>
<div>
<p class=""><span style="" lang="EN-US">Hello list,</span></p>
<p class=""><span style="" lang="EN-US">I have a
question about reporting statistics derived from EEGLAB,
or rather how to reduce
and report relevant statistics. One of the many
strengths of EEGLAB is the
possibility to perform statistical testing over all your
electrodes and samples
when performing a simple ERP experiment. I do, however
have trouble understanding
what to do with huge amount of F and p-values once I
have performed the
testing. </span></p>
<p class=""><span style="" lang="EN-US">One problem
is deciding which electrodes to include when reporting
the statistical significance
another is, if I choose one (or a cluster of relevant
electrodes), do I still
have to average relevant time period of that electrode
and test it again, or can
I average the F and p-values within that period for that
specific electrode (or
cluster)?</span></p>
<br>
</div>
Best regards,<br>
</div>
David</div>
</div>
<br>
<br>
<pre class="moz-signature" cols="72">--
Dr Cyril Pernet,
Academic Fellow
Brain Research Imaging Center
<a class="moz-txt-link-freetext" href="http://www.bric.ed.ac.uk/">http://www.bric.ed.ac.uk/</a>
Division of Clinical Neurosciences
University of Edinburgh
Western General Hospital
Crewe Road
Edinburgh
EH4 2XU
Scotland, UK
<a class="moz-txt-link-abbreviated" href="mailto:cyril.pernet@ed.ac.uk">cyril.pernet@ed.ac.uk</a>
tel: +44(0)1315373661
<a class="moz-txt-link-freetext" href="http://www.sbirc.ed.ac.uk/LCL/">http://www.sbirc.ed.ac.uk/LCL/</a>
<a class="moz-txt-link-freetext" href="http://www.sbirc.ed.ac.uk/cyril">http://www.sbirc.ed.ac.uk/cyril</a>
</pre>
</body>
</html>