[Eeglablist] Comparing mu suppression with EEGLAB
florient.chouteau at isae.fr
Thu Jun 19 02:30:51 PDT 2014
I am an human factor students doing a research projet on mirror neurons
and I am struggling with EEGLAB.
I am trying to compare several EEG signals, mainly located in C3/C4
using more or less the same protocol as Oberman et al 2007 and
2005. In fact, I acquired three signals (subject presented to three
videos including a baseline (white noise)) and I am trying to calculate
mu suppression by displaying "The ratio of the power in the mu
frequency" as described in ,  and . (Specific quote: "For each
cleaned segment the integrated power in the 8--13 Hz range was computed
using a fast Fourier transform")
Problem is, I have absolutely no clue as to how "substract" the power
from the two tests and the baseline in EEGLAB. I successfully displayed
the power = f (frequency) for all of my signals but substracting one to
the other and calculating the global power in the frequency range remain
a mystery to me.
Assuming that I dispose of cleaned epoched data, would you have any idea
as to how to proceed, using EEGLAB functions or simply MATLAB ones,
Oberman, L. M., McCleery, J. P., Ramachandran, V. S., & Pineda, J. A.
(2007). EEG evidence for mirror neuron activity during the observation
of human and robot actions: Toward an analysis of the human qualities of
interactive robots. /Neurocomputing/, /70/(13), 2194-2203.
Arnstein, D., Cui, F., Keysers, C., Maurits, N. M., & Gazzola, V.
(2011). ?-suppression during action observation and execution correlates
with BOLD in dorsal premotor, inferior parietal, and SI cortices. /The
Journal of Neuroscience/, /31/(40), 14243-14249.
Oberman, L. M., Hubbard, E. M., McCleery, J. P., Altschuler, E. L.,
Ramachandran, V. S., & Pineda, J. A. (2005). EEG evidence for mirror
neuron dysfunction in autism spectrum disorders. /Cognitive Brain
Research/, /24/(2), 190-198.
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