<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
        {font-family:Helvetica;
        panose-1:2 11 6 4 2 2 2 2 2 4;}
@font-face
        {font-family:"Cambria Math";
        panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
        {font-family:Calibri;
        panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
        {margin:0cm;
        margin-bottom:.0001pt;
        font-size:11.0pt;
        font-family:"Calibri",sans-serif;
        mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
        {mso-style-priority:99;
        color:#0563C1;
        text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
        {mso-style-priority:99;
        color:#954F72;
        text-decoration:underline;}
span.EmailStyle17
        {mso-style-type:personal-compose;
        font-family:"Calibri",sans-serif;
        color:windowtext;}
.MsoChpDefault
        {mso-style-type:export-only;
        font-family:"Calibri",sans-serif;
        mso-fareast-language:EN-US;}
@page WordSection1
        {size:612.0pt 792.0pt;
        margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
        {page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-GB" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<p class="MsoNormal">Hi all,<o:p></o:p></p>
<p class="MsoNormal">I ran ICA with either a 0.1Hz or 1Hz filter. 0.1 does not give stable components- multiple blinks, and fuzzy looking brain maps.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">However, I wanted to avoid transferring the weights from 1Hz to 0.1, incase the 0.1Hz, which does not get fully characterised within the training, subsequently gets removed when we exclude eye blinks etc. Although this is fairly unlikely,
 I did wonder if there would be an alternative to help my decomposition at 0.1Hz?  Something that would also not distort the ERP.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I wondered about de-trending, but again, I am unsure how this would distort the ERP and I am not sure if this has been tested?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best wishes,<o:p></o:p></p>
<p class="MsoNormal">Jumana <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="mso-fareast-language:EN-GB">------------------------------------------</span></b><span style="font-family:"Helvetica",sans-serif;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="mso-fareast-language:EN-GB">Jumana Ahmad<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">Post-Doctoral Research Worker in Cognitive Neuroscience </span><span style="font-family:"Helvetica",sans-serif;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">EU-AIMS Longitudinal European Autism Project (LEAP)
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Helvetica",sans-serif;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">Room M1.09. Department of Forensic and Neurodevelopmental Sciences (PO 23) | Institute of Psychiatry, Psychology & Neuroscience | King’s College London | 16 De Crespigny Park | London SE5 8AF</span><span style="font-family:"Helvetica",sans-serif;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB"> </span><span style="font-family:"Helvetica",sans-serif;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="mso-fareast-language:EN-GB">Phone:</span></b><span style="mso-fareast-language:EN-GB"> </span><span lang="EN-US" style="mso-fareast-language:EN-GB">0207848 0260</span><span style="mso-fareast-language:EN-GB">| <b>Email:</b> jumana.ahmad<a href="mailto:antonia.sanjose@kcl.ac.uk" target="_blank"><span style="color:windowtext;text-decoration:none">@kcl.ac.uk</span></a> | <b>Website:</b> <a href="http://www.eu-aims.eu/" target="_blank"><span style="color:windowtext">www.eu-aims.eu</span></a> | <b>Facebook:</b> <a href="http://www.facebook.com/euaims" target="_blank"><span style="color:windowtext">www.facebook.com/euaims</span></a></span><span style="font-family:"Helvetica",sans-serif;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>