<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=Windows-1252">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
Hi Cay,</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
It sounds like you want to test whether there is an interaction between your two independent variables ('target' and 'lure').</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
If so, you should start here: <a href="http://www.fieldtriptoolbox.org/faq/how_can_i_test_an_interaction_effect_using_cluster-based_permutation_tests/" style="" id="LPlnk630118">
http://www.fieldtriptoolbox.org/faq/how_can_i_test_an_interaction_effect_using_cluster-based_permutation_tests/</a> , which will help you understand what you can and can't do to test interactions using cluster-based permutation.<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
If that doesn't help feel free to ask here again. <br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
It is always helpful to provide as much information as possible in your question. For instance, right now I can't tell if you're asking about
<i>what kind of test to do</i>, or <i>how to write the code for doing the test</i>, which makes it difficult to give advice.<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
I hope that's clear and helps you!</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
Best,</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
Tom<br>
</div>
<div id="LPBorder_GTaHR0cDovL3d3dy5maWVsZHRyaXB0b29sYm94Lm9yZy9mYXEvaG93X2Nhbl9pX3Rlc3RfYW5faW50ZXJhY3Rpb25fZWZmZWN0X3VzaW5nX2NsdXN0ZXItYmFzZWRfcGVybXV0YXRpb25fdGVzdHMv" class="LPBorder476977" style="width: 100%; margin-top: 16px; margin-bottom: 16px; position: relative; max-width: 800px; min-width: 424px;" contenteditable="false">
<table id="LPContainer476977" role="presentation" style="padding: 12px 36px 12px 12px; width: 100%; border-width: 1px; border-style: solid; border-color: rgb(200, 200, 200); border-radius: 2px;">
<tbody>
<tr style="border-spacing: 0px;" valign="top">
<td style="width: 100%;">
<div id="LPTitle476977" style="font-size: 21px; font-weight: 300; margin-right: 8px; font-family: "wf_segoe-ui_light", "Segoe UI Light", "Segoe WP Light", "Segoe UI", "Segoe WP", Tahoma, Arial, sans-serif; margin-bottom: 12px;">
<a target="_blank" id="LPUrlAnchor476977" href="http://www.fieldtriptoolbox.org/faq/how_can_i_test_an_interaction_effect_using_cluster-based_permutation_tests/" style="text-decoration: none; color:var(--themePrimary);">How to test an interaction effect using
cluster-based permutation tests? - FieldTrip toolbox</a></div>
<div id="LPDescription476977" style="font-size: 14px; max-height: 100px; color: rgb(102, 102, 102); font-family: "wf_segoe-ui_normal", "Segoe UI", "Segoe WP", Tahoma, Arial, sans-serif; margin-bottom: 12px; margin-right: 8px; overflow: hidden;">
How to test an interaction effect using cluster-based permutation tests? You can use cluster-based permutation tests for some but not for all interaction effects. Specifically, you can only use them for testing interaction effects in factorial designs with
only a single between-subjects factor.</div>
<div id="LPMetadata476977" style="font-size: 14px; font-weight: 400; color: rgb(166, 166, 166); font-family: "wf_segoe-ui_normal", "Segoe UI", "Segoe WP", Tahoma, Arial, sans-serif;">
www.fieldtriptoolbox.org</div>
</td>
</tr>
</tbody>
</table>
</div>
<br>
<div id="appendonsend"></div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> fieldtrip <fieldtrip-bounces@science.ru.nl> on behalf of Lee, Kyoung Eun <klee773@gatech.edu><br>
<b>Sent:</b> 10 June 2020 12:47<br>
<b>To:</b> fieldtrip@science.ru.nl <fieldtrip@science.ru.nl><br>
<b>Subject:</b> [FieldTrip] Non-parametric permutation clustering with 2x2 within subject conditions.</font>
<div> </div>
</div>
<style>
<!--
@font-face
{font-family:"Cambria Math"}
@font-face
{font-family:"Malgun Gothic"}
@font-face
{font-family:Calibri}
p.x_MsoNormal, li.x_MsoNormal, div.x_MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman",serif}
a:link, span.x_MsoHyperlink
{color:#0563C1;
text-decoration:underline}
a:visited, span.x_MsoHyperlinkFollowed
{color:#954F72;
text-decoration:underline}
span.x_EmailStyle17
{font-family:"Calibri",sans-serif;
color:windowtext}
.x_MsoChpDefault
{font-family:"Calibri",sans-serif}
@page WordSection1
{margin:1.0in 1.0in 1.0in 1.0in}
div.x_WordSection1
{}
-->
</style>
<div lang="EN-US" link="#0563C1" vlink="#954F72">
<div class="x_WordSection1">
<p class="x_MsoNormal">Dear FieldTrip users, </p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal" style="text-autospace:none">Currently I’m working on a non-parametric permutation clustering with ft_freqstatistics function.</p>
<p class="x_MsoNormal" style="text-autospace:none">So far, I just compared two different within-subject conditions (Hit vs. Miss), Therefore, I set “<span style="color:black">cfg.statistic =
</span><span style="color:#A020F0">'depsamplesT'</span><span style="color:black">”.</span></p>
<p class="x_MsoNormal" style="text-autospace:none"><span style="color:black">And my design is set as below :</span></p>
<p class="x_MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt; font-family:"Courier New"; color:black">subj = 42;</span><span style="font-family:"Courier New""></span></p>
<p class="x_MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt; font-family:"Courier New"; color:black">design(1,1:subj) = 1:subj; design(1,subj+1:2*subj)= 1:subj;
</span><span style="font-family:"Courier New""></span></p>
<p class="x_MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt; font-family:"Courier New"; color:black">design(2,1:subj) = 1; design(2,subj+1:2*subj)= 2;
</span><span style="font-family:"Courier New""></span></p>
<p class="x_MsoNormal" style="text-autospace:none"><span style="color:black"> </span></p>
<p class="x_MsoNormal" style="text-autospace:none"><span style="color:black">But now, I want to compare 2x2 within subject conditions (Target-Hit/ Target-Miss/ Lure-Hit/ Lure-Miss).</span></p>
<p class="x_MsoNormal" style="text-autospace:none"><span style="color:black">In this case, what kind of statistic I have to use? How can I change the design?</span></p>
<p class="x_MsoNormal" style="text-autospace:none"><span style="color:black">And lastly, how’s the results look like? (would there be positive and negative clusters?)
</span></p>
<p class="x_MsoNormal" style="text-autospace:none"><span style="color:black"> </span></p>
<p class="x_MsoNormal" style="text-autospace:none"><span style="color:black">Please let me know if you have any suggestion.</span></p>
<p class="x_MsoNormal" style="text-autospace:none"><span style="color:black">Thank you so much,</span></p>
<p class="x_MsoNormal" style="text-autospace:none"><span style="color:black"> </span></p>
<p class="x_MsoNormal" style="text-autospace:none"><span style="color:black">Best,</span></p>
<p class="x_MsoNormal" style="text-autospace:none"><span style="color:black">Cay</span></p>
<p class="x_MsoNormal" style="text-autospace:none"> </p>
<p class="x_MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New""> </span></p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif"> </span></p>
</div>
</div>
</body>
</html>