<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div>Dear David,</div><div><br></div><div>In addition to Makoto recommendation, the E-prime files should have exact latencies in milliseconds. You may simply align these events with your EEG data and compute the EEG sampling rate.</div><div><br></div><div>Arno</div><div><br><div><div>On Oct 21, 2014, at 1:00 AM, Makoto Miyakoshi <<a href="mailto:mmiyakoshi@ucsd.edu">mmiyakoshi@ucsd.edu</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><div dir="ltr">Dear David,<div><br></div><div>Usually, EEG sampling rate is either 250, 256, 500, 512, 1000, 1024, and any higher freqs than this is rarely used.</div><div><br></div><div>To make a rough estimate... If the task is with any visual presentation you can use occipital visual potential as the reliable marker. I would set it to 500 for starting and run ICA to find occipital alpha peak in the IC spectrum, and if the peak is around 8-12 you are fine (I don't think you can distinguish 500 from 512 or 1000 from 1024 in this 'method') if it is 4-6 or 16-24 then you want to half/double the sampling rate.</div><div><br></div><div>Makoto</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Oct 17, 2014 at 3:33 PM, David Ryan <span dir="ltr"><<a href="mailto:ryand1@goldmail.etsu.edu" target="_blank">ryand1@goldmail.etsu.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><div>Hello,<br><br></div>I have been given the task of analyzing data salvaged from a broken hard drive, from a study done a few years ago. I have g.Recorder hdf5 files that need artifact rejection (eye blink, eye movement) and ERPs that need to be extracted from 4 different triggers from E-prime. <br><br></div>I have read on this list that it is simple to get these files imported into EEGLAB; however, I do not know the sample rate or other simple characteristics of these files. <br clear="all"><div><div><br></div><div>Does anyone have any suggestions?<br></div><div>Thanks,<br>Dave<br><br>
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