<div dir="ltr">Hello Aaron,<br><br>This doesn't, answer the rest of your questions, but... In your attached Fieldtrip image, component 1 does look like a likely blink component to me?<br><div><div class="gmail_extra"><br clear="all">
<div><div dir="ltr"><div><br><br></div>Stephen Politzer-Ahles<br>New York University, Abu Dhabi<br>Neuroscience of Language Lab<br><a href="http://www.nyu.edu/projects/politzer-ahles/" target="_blank">http://www.nyu.edu/projects/politzer-ahles/</a><br>
</div></div>
<br><br><div class="gmail_quote">On Mon, Mar 31, 2014 at 11:52 PM, <span dir="ltr"><<a href="mailto:fieldtrip-request@science.ru.nl" target="_blank">fieldtrip-request@science.ru.nl</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Message: 2<br>
Date: Mon, 31 Mar 2014 14:51:51 -0500<br>
From: Aaron Hanford <<a href="mailto:aharown@hotmail.com">aharown@hotmail.com</a>><br>
To: "<a href="mailto:fieldtrip@science.ru.nl">fieldtrip@science.ru.nl</a>" <<a href="mailto:fieldtrip@science.ru.nl">fieldtrip@science.ru.nl</a>><br>
Subject: [FieldTrip] ICA: eeglab and fieldtrip<br>
Message-ID: <BLU184-W8ABD13D8D59439530A857A3630@phx.gbl><br>
Content-Type: text/plain; charset="iso-8859-1"<br>
<br>
Hi,I'm resending this with the figures turned into jpgs so it's not oversize...anyway, so I'm somewhat new to both fieldtrip and eeglab (although much more so to fieldtrip). I'm trying to figure out the following:<br>
On the exact same dataset, I did the following two things:<br>
1) in eeglab, I just chose Tools -> Run ICA with default settings.<br>
Then, starting over with the original raw data:<br>
2) In fieldtrip I ran the following: data = eeglab2fieldtrip(EEG,'preprocessing','none');cfg = [];cfg.method = 'runica';[comp]=ft_componentanalysis(cfg,data);layout = 'C:\Users\aharown\Desktop\fieldtrip-20140126\template\layout\easycapM17.mat';cfg.component = [1:31];cfg.layout = layout;ft_topoplotIC(cfg,comp);<br>
In both cases I then plotted the 2-D component maps, attached.<br>
So my question is, why are these results so completely different? The fieldtrip results don't look right at all, in that for instance they don't obviously identify a blink component (note that in this dataset, there is only one electrode placed near the right eye, not the left). I did this a handful of times and got the same sort of big differences. Am I doing something wrong or what?<br>
<br>
I actually think the cap file seems incorrect, but I've been assured by my PI that it's correct, so .... is there another likely answer?<br>
Thanks,<br>
Aaron<br>
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