[Eeglablist] Identifying stimulation events

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Tue Jun 25 20:30:51 PDT 2013


Dear Madeline,

I think I've seen Arno answering to the similar question. I checked the
EEGLAB at hand but I could not find the toolbox.

http://sccn.ucsd.edu/wiki/EEGLAB_Menu_Functions
Peak detection using EEG toolbox -- -- --

Makoto


2013/6/19 Madeline Grade <madelinegrade at gmail.com>

> Hello all,
>
> I am trying to average the 200ms following repeated bipolar stimulation in
> intracranial recordings of epileptic patients, in the hope of identifying
> propagation patterns. Ideally there would be a way to automatically create
> an EEGLAB event for each stimulation, by identifying when signal amplitude
> exceeds a particular threshold (stim is very obvious- huge amplitude
> change), and then extracting epochs following the stimulations.
>
> Can this "stimulation event detection" be done in EEGLAB? Or must it be
> imported-- should I somehow create a separate 'events' matrix in Matlab by
> manipulating the imported EEG matrix and identifying at which indices this
> occurs?
>
> Any info/suggestions would be much appreciated.
>
> Madeline
>
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-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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