Dear all<br />
In general, ICA and re-reference are linear operation, the order is not a problem in theory, however, ICA is a numeric operation, the actual neumeric errors may be different before or after reference transform.<br />
My suggestion is to have Reference first transformed to zero reference, then any operations, linar or non-linear, are really not a problem forever.<br />
There is a free software REST at <a href="http://www.neuro.uestc.edu.cn/rest">www.neuro.uestc.edu.cn/rest</a> for realizing such a transform, where you can also find some comparative studies between REST, average reference, linked ear, or single point reference<br />
Best wishes <br />
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<address>Dezhong Yao PhD<br />
Cheung Kong Professor of Neuroengineering, Neuroimaging<br />
E-mail: dyao@uestc.edu.cn<br />
Fax: 86-28-83208238; Tel: 86-28-83201018<br />
Director, Key Laboratory for NeuroInformation, Ministry of Education, China<br />
International Joint Research Center for NeuroInformation, Ministry of Science and Technology, China <br />
Dean, School of Life Science and Technology, University of Electronic Science and Technology of China, Sichuan,Chengdu 610054, China<br />
Director, Center for Information in Medicine, University of Electronic Science and Technology of China, China<br />
http://www.neuro.uestc.edu.cn/bci/member/yao/yao.html<br />
尧德中 电子科技大学 生命科学与技术学院/信息医学研究中心/神经信息教育部重点实验室/神经信息国际联合研究中心</address>
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</div>
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---------- Origin message ----------<br />
>From:"David G Gilbert" <dgilbert@siu.edu><br />
>To:"eeglablist@sccn.ucsd.edu" <eeglablist@sccn.ucsd.edu><br />
>Subject:[Eeglablist] Is it better to run ICAs with average reference or with vertex reference prior to ICA for during data cleaning?<br />
>Date:2017-04-06 23:06:28<br />
<blockquote style="margin: 0px 0px 0px 0.8ex; padding-left: 1ex; border-left-color: rgb(0, 0, 204); border-left-width: 1px; border-left-style: solid;">Is it better to run ICAs with average reference or with vertex reference prior to ICA for during data cleaning?<br />
<br />
<br />
David Gilbert<br />
<br />
Department of Psychology<br />
<br />
Southern Illinois University Carbondale<br />
<br />
<br />
</blockquote>