<div dir="ltr">Dear Jason,<div><br></div><div>Whenever repeated measures applies you want to use the 'paired' checked otherwise you'll lose statistical power.</div><div><br></div><div>Makoto</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Oct 6, 2015 at 11:27 AM, jason roger <span dir="ltr"><<a href="mailto:jasonroger8@gmail.com" target="_blank">jasonroger8@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div>Dear Makoto, <br><br></div>Thanks for your kind help.<br><br></div>Due to the fact of using the "Condition" option while creating a STUDY, do you recommend, though, utilizing repeated measures for the statistical analysis?<br><br></div>Best regards, <br></div>Jason<br></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Oct 7, 2015 at 1:59 AM, Makoto Miyakoshi <span dir="ltr"><<a href="mailto:mmiyakoshi@ucsd.edu" target="_blank">mmiyakoshi@ucsd.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Dear Jason,<span><br><br>> 1-What's the meaning of the word "conditions" in upper section "To compare event-related EEG dynamics for a subject in two or more conditions from the same experiment"? In other words, does that mean, if I have dataset of one participant with 2 events ("rt", and "square"), and in oder to compare those events, I need to seperate my data into 2 datasets where each of them has one event (first dataset is related to the rt event, and second dataset is related to the square event?<br><br></span>A condition here means independent variable in the experimental framework. There are within-subject conditions and between-subject (i.e. group) conditions.</div><div><br></div><div>For example, Oddball paradigm typically consists of standard (95% frequency) and rare (5% frequency) trials. This is a within-subject condition, and you use repeated measures (or 'paired') for statistics. An example of between-subject condition is the group difference between American and Japanese, or those who drink offer vs. black tea, etc.</div><span><div><br></div><div>> 2-Is the term "event-related EEG dynamics" (mentioned up) can be considered as "event-related potential"?</div><div><br></div></span><div>Right. They don't want to use 'event-related potential' because for the historical reason it tends to mean trial-averaged line plot of event-related potentials.</div><div><br></div><div>Makoto</div><div class="gmail_extra"><br><div class="gmail_quote"><div><div>On Tue, Sep 29, 2015 at 2:34 AM, jason roger <span dir="ltr"><<a href="mailto:jasonroger8@gmail.com" target="_blank">jasonroger8@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div><div><p dir="ltr">Dear all,</p>
<p dir="ltr">In EEGLAB tutorial under the section "Selecting events and epochs for two conditions" was written:</p>
<p dir="ltr">"To compare event-related EEG dynamics for a subject in two or more conditions from the same experiment, it is first necessary to create datasets containing epochs for each condition. In the experiment of our sample dataset, half the targets appeared at position 1 and the other half at position 2".</p>
<p dir="ltr">My queations: <br>
1-What's the meaning of the word "conditions" in upper section "To compare event-related EEG dynamics for a subject in two or more conditions from the same experiment"? In other words, does that mean, if I have dataset of one participant with 2 events ("rt", and "square"), and in oder to compare those events, I need to seperate my data into 2 datasets where each of them has one event (first dataset is related to the rt event, and second dataset is related to the square event? </p>
<p dir="ltr">2-Is the term "event-related EEG dynamics" (mentioned up) can be considered as "event-related potential"?</p>
<p dir="ltr">Thanks.<span><font color="#888888"><br>
Jason </font></span></p>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr">Makoto Miyakoshi<br>Swartz Center for Computational Neuroscience<br>Institute for Neural Computation, University of California San Diego<br></div></div>
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