<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><div dir="ltr"><pre style="white-space:pre-wrap;color:rgb(0,0,0)">Dear FieldTrip community,
I have a 2 x 2 within subjects study design (with my two factors being time and affective condition) in which I am hoping to use an ANOVA in the cluster based permutation framework to analyze.
Since I have a 2 x 2 design, I have been following the tutorial:
<a href="http://www.fieldtriptoolbox.org/faq/how_can_i_test_an_interaction_effect_using_cluster-based_permutation_tests" target="_blank">http://www.fieldtriptoolbox.org/faq/how_can_i_test_an_interaction_effect_using_cluster-based_permutation_tests</a>
as well as various previous responses on the mailing list.
In the context that I have an interaction in certain electrodes at certain time points, my question is:
1). If an interaction is initially found, should the post-hoc (e.g. simple main effects) be limited to the electrodes and time in which the interactions are present, or would the simple effect contrasts be run across all electrodes and time points as were run in the initial interaction test.
Most of my simple main effect contrasts are coming up as significant across various electrodes, I'm finding making my inference a bit more complicated. </pre><pre style="white-space:pre-wrap;color:rgb(0,0,0)">Any insight would be greatly appreciated.<br></pre><pre style="white-space:pre-wrap;color:rgb(0,0,0)">Thank you,
Paul</pre></div>