<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 12 (filtered medium)">
<style>
<!--
/* Font Definitions */
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@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;}
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:"Microsoft YaHei";
panose-1:2 11 5 3 2 2 4 2 2 4;}
@font-face
{font-family:Microsoft;
panose-1:0 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:"Microsoft YaHei";
panose-1:2 11 5 3 2 2 4 2 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:10.5pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;}
/* Page Definitions */
@page Section1
{size:612.0pt 792.0pt;
margin:72.0pt 90.0pt 72.0pt 90.0pt;}
div.Section1
{page:Section1;}
-->
</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="ZH-CN" link="blue" vlink="purple" style="text-justify-trim:punctuation">
<div class="Section1">
<p class="MsoNormal"><span lang="EN-US">Hi everyone,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I have problems in calculating (alpha power/theta power) over time. I have studied the tutorial, currently I am able to reject the artifacts using visual inspection and ICA. I can also calculate (alpha power/theta power)
over channels using EEGLAB GUI. But I still have problems computing this correlation over time. Since I don't have experience in EEG analysis, any help would be appreciated.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I collected the data using EMOTIV EPOC headset. In my analysis, I would like to see the correlation between alpha and theta. To normalize the power, these bandwidth powers will be divided by total power. Then I want to
calculate (alpha power/theta power) over the first 20s period, and then update every 2s using a 20s moving window.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks for the help in advance. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left"><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun;color:black">--
<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:left">
<b><span lang="EN-US" style="font-size:10.0pt;font-family:
"微软雅黑","sans-serif";color:black">Chong Li
</span></b><span lang="EN-US" style="font-size:7.5pt;font-family:"Microsoft","serif";color:black">PhD student
<br>
Department of Design Engineering<br>
Faculty of Industrial Design Engineering<br>
Delft University of Technology<br>
Landbergstraat 15, 2628 CE Delft, The Netherlands </span><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
</div>
</body>
</html>