<div dir="ltr">Dear Lucia,<div><br></div><div>I did not understand why continuous data rejection does not work for you. My comment below may not be specific to your case.</div><div><br></div><div>You can clean it with clean_rawdata() that uses Artifact Subspace Reconstruction (ASR). You can install it from EEGLAB plugin manager or from here</div><div><a href="http://sccn.ucsd.edu/wiki/Plugin_list_process">http://sccn.ucsd.edu/wiki/Plugin_list_process</a><br></div><div><br></div><div><span style="color:rgb(0,0,0);font-family:Tahoma;font-size:13.1428575515747px">> Another potential way is to re-lable the event markers such that the ones in each block are different - does anyone know of a way I can selectively re-label event markers? (i.e. turn all the event markers '4' from the first block only to '44')?</span><br></div><div class="gmail_extra"><br></div><div class="gmail_extra">You can do it from EEGLAB GUI 'Edit'... if you can write a Matlab code, you want to write either a for loop to replace them. I saw the related post just a few days ago. Go to eeglablist archive and find it by title.</div><div class="gmail_extra"><br></div><div class="gmail_extra">Makoto</div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Feb 11, 2015 at 7:39 AM, Li, Lucia M <span dir="ltr"><<a href="mailto:lucia.li@imperial.ac.uk" target="_blank">lucia.li@imperial.ac.uk</a>></span> wrote:<br><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">
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<div style="direction:ltr;font-family:Tahoma;color:rgb(0,0,0);font-size:10pt">Dear eeglab users & experts,
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<div>Would someone be able to help me out with a query?</div>
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<div>I am analysing EEG data from a task. This task is separated into 3 blocks (beginning, middle and last), and there are several trials within each block. I would like to compare EEG parameters between the trials occurring in different blocks. I know that
I can highlight continuous portions of data for rejection (e.g. reject the middle and last portions, and be left with just the beginning portion). However, I don't want to do this because I think that subsequent cleaning on the divided data may introduce bias
- i.e. differences between the blocks may be because of differences in cleaning and not due to differences in neurological state.</div>
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<div>I have tried a couple of different methods (e.g. adding markers in, but eeglab doesn't seem to allow bins of different sizes to exist; trying to use Edit --> select data using events, but after cleaning and deleting noisy epochs the markers may be deleted).
The stimulus markers do not differentiate between each block.</div>
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<div>Another potential way is to re-lable the event markers such that the ones in each block are different - does anyone know of a way I can selectively re-label event markers? (i.e. turn all the event markers '4' from the first block only to '44')?</div>
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<div>Does anyone have any other suggestions for how I can mark divide my data (after epoching and cleaning) into the blocks?</div>
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<div>Thank you in advance for your help.</div>
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<div>Kind regards,</div>
<div>Lucia</div>
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For digest mode, send an email with the subject "set digest mime" to <a href="mailto:eeglablist-request@sccn.ucsd.edu">eeglablist-request@sccn.ucsd.edu</a><br></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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