[Eeglablist] g.Recorder hdf5 files into EEGLAB, ERPLAB

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Mon Oct 20 16:00:57 PDT 2014

Dear David,

Usually, EEG sampling rate is either 250, 256, 500, 512, 1000, 1024, and
any higher freqs than this is rarely used.

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.


On Fri, Oct 17, 2014 at 3:33 PM, David Ryan <ryand1 at goldmail.etsu.edu>

> Hello,
> 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.
> 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.
> Does anyone have any suggestions?
> Thanks,
> Dave
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Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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