[Eeglablist] FW: How can I perform spectral power density analysis with eeg lab ?

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Thu Mar 26 09:37:45 PDT 2015

Dear Alain,

This may be suitable.


On Mon, Mar 23, 2015 at 7:47 AM, Alain Imaging <alain_imaging at outlook.com>

> Hi everybody!
> I am pretty green at EEG  and I would need some tips for my analysis.
> In the context of a bigger tDCS study with a focus on neuroimaging, we are
> trying to perform some EEG analysis (actually this analysis are one of the
> aim of my master theses).
> With the device that we are using for tDCS, we can have concurrent tDCS
> and EEG, but this limit the number of channel that we can use for EEG to 3.
> In particular, we are acquiring 5 minutes pre-stimulation EEG, than 25
> minutes of concurrent tDCS and EEG, and finally 5 minutes of
> post-stimulation EEG. The three EEG electrodes are placed at Fz, P3 and P4.
> The sampling rate is 500 samples/second.
> What I would like to do, is compare the power spectrum of the EEG signal
> (with a focus on alpha, beta and delta bands) before and after the
> stimulation and between the subjects who get the real stimulation and the
> subjects who get the sham stimulation (a delta of delta).
> How can I perform this kind of analysis ? Which preprocessing steps I need
> to perform ?
> Can you point me toward any article/tutorial that can help me or where I
> can gather such information ?
> Any help will be greatly appreciated!
> Alain
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Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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