[Eeglablist] Fwd: [SCCN Contact Form] EEGLAB

Scott Makeig smakeig at ucsd.edu
Thu Jun 1 13:25:49 PDT 2017

Johanna -  Could you answer?  -Scott

---------- Forwarded message ----------
From: Vera Kooiman <g.m.kooiman at student.rug.nl>
Date: Thu, Jun 1, 2017 at 2:33 AM
Subject: [SCCN Contact Form] EEGLAB
To: eeglab at sccn.ucsd.edu

Dear Sir/Madam,

My name is Vera Kooiman and momentarily I am working on my master thesis,
measuring EEG in healthy participant walking with a lower-limb dummy
I am using EEGLAB to analyse my data, but had a question, which I could not
find an answer for online. I am trying to compare two different condition
(normal walking vs walking with a prosthesis) using the ERSP in a STUDY.
But during normal walking, the epoch (step cycle) duration is smaller (1
sec) than during walking with a prosthesis (1.5 sec).  It is not possible
to compare these condition because the epochs are not consistent. But is it
possible to, for instance, scale the ERSP plots to similar lengths and
still compute the statistical differences? We do not wish to scale the
data, because this changes the frequencies in the data and therefore the
result in the ERSP plots.
I hope you can help me with this problem. Thank you in advance.

Kind Regards,
Vera Kooiman

Scott Makeig, Research Scientist and Director, Swartz Center for
Computational Neuroscience, Institute for Neural Computation, University of
California San Diego, La Jolla CA 92093-0961, http://sccn.ucsd.edu/~scott
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