<div dir="ltr">Dear Arno,<div><br></div><div>I've never thought of it, but could it be anything other than microvolt?</div><div><br></div><div>Makoto</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">
2014-04-25 0:14 GMT-07:00 GROSSELIN, Fanny <span dir="ltr"><<a href="mailto:fanny.grosselin@edu.esiee.fr" target="_blank">fanny.grosselin@edu.esiee.fr</a>></span>:<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>Hi,<br><br></div>Thank you for your response. My data format come from Brain Vision so I don't use loadvg(). I use pop_loadbv and this function save units because it is written :<br>for chan = 1:length(chans)<br>
[EEG.chanlocs(chan).labels, chanlocs(chan).ref, chanlocs(chan).scale,<b> chanlocs(chan).unit</b>] = strread(hdr.channelinfos{chans(chan)}, '%s%s%s%s', 1, 'delimiter', ',');<br><br> However, it doesn't appear in the workspace of Matlab... chanlocs.unit is undefined. <br>
<br></div>Best,<br><br></div>Fanny<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-04-25 6:05 GMT+02:00 Stephen Politzer-Ahles <span dir="ltr"><<a href="mailto:spa268@nyu.edu" target="_blank">spa268@nyu.edu</a>></span>:<div>
<div class="h5"><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">I think there is one exception, which is that the loadavg() function for Neuroscan .avg data does some kind of scaling (see see <a href="http://sccn.ucsd.edu/pipermail/eeglablist/2011/003986.html" target="_blank">http://sccn.ucsd.edu/pipermail/eeglablist/2011/003986.html</a> and some other messages on the list) so the data aren't in microvolts or (I think) a straightforward multiple of microvolts. I'm not sure if that's your data format, but if it is then that message includes a different function you can use to get the data in microvolts.<div>
<br></div><div>Best,</div><div>Steve</div></div><div class="gmail_extra"><span><font color="#888888"><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>
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<br><br><div class="gmail_quote">On Fri, Apr 25, 2014 at 7:19 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">Dear Fanny,<div><br></div><div>That's an interesting question. I guess the unit is fixed to be microvolt, and it's not written anywhere!</div><div><br></div><div>Makoto</div></div><div class="gmail_extra">
<br><br><div class="gmail_quote">2014-04-24 0:57 GMT-07:00 GROSSELIN, Fanny <span dir="ltr"><<a href="mailto:fanny.grosselin@edu.esiee.fr" target="_blank">fanny.grosselin@edu.esiee.fr</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><div><div>Hi Makoto,<br><br></div>Thank you for your response. However, I wonder if unit is saved somewhere in the workspace of Matlab or if I have to get back it in the header file?<br><br></div>Fanny<br>
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<div class="gmail_extra"><br><br><div class="gmail_quote">2014-04-23 22:40 GMT+02:00 Makoto Miyakoshi <span dir="ltr"><<a href="mailto:mmiyakoshi@ucsd.edu" target="_blank">mmiyakoshi@ucsd.edu</a>></span>:<div><div>
<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Dear Fanny,<div><br></div><div>I know some of import function can specify the units for amplitudes. If you have problem, you can try</div><div>EEG.data = EEG.data*/1000;</div><div>to convert microvolt to millivolt.</div>
<div><br></div><div>Makoto</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-04-23 8:13 GMT-07:00 GROSSELIN, Fanny <span dir="ltr"><<a href="mailto:fanny.grosselin@edu.esiee.fr" target="_blank">fanny.grosselin@edu.esiee.fr</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr"><div><div><div><div>Hi everybody,<br><br></div>I would like to know what the unit of data is in EEG.data? <br>
</div>Is there microvolts unit for any type of file loaded, even if data are in millivolts in the initial file?<br>
<br></div>Thank you in advance for your help,<br><br></div>Fanny<br></div>
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-- <br><div dir="ltr">Makoto Miyakoshi<br>Swartz Center for Computational Neuroscience<br>Institute for Neural Computation, University of California San Diego<br></div>
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</font></span></blockquote></div><span><font color="#888888"><br><br clear="all"><div><br></div>-- <br><div dir="ltr">Makoto Miyakoshi<br>Swartz Center for Computational Neuroscience<br>Institute for Neural Computation, University of California San Diego<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr">Makoto Miyakoshi<br>Swartz Center for Computational Neuroscience<br>Institute for Neural Computation, University of California San Diego<br></div>
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