[Eeglablist] Export frequency spectrum for an IC cluster

[Makoto Miyakoshi]

Dear Shingo,

In computing ERSP/ITC, 'freqs' and 'nfreqs' specifies the freq range and
number of freq bins respectively. Unless you specify 'nfreqs', it
determines the number of freq bins according to whatever default.

If you need 3-30 Hz range and every 1-Hz resolution (i.e., 27 freq bins),

'freqs', [3 30], 'nfreqs', 27

Makoto

On Tue, Jul 3, 2018 at 6:52 PM 時本真吾 <tokimoto at mejiro.ac.jp> wrote:

> Miyakoshi-san,
>
> This is Shingo. Thank you for the quick and kind response. I have managed
> to get the matrix by STUDY variable in the Matlab workspace. Thank you very
> much again. However, another question has arose. As you said,  I have got
> "erspfreq as vertical axis.” When I specify frequency band as 3 to 30, the
> number of rows is 81. I wonder “81” is (30-3)*7. Is this the correct
> understanding? If so, where in my preprocessing or plotting is the number
> of rows determined. Thank you in advance again.
>
> Sincerely,
>
> ******************************************
> Shingo Tokimoto, Ph.D.
> in Linguistics and Psychology
> Department of Foreign Languages
> Mejiro University
> 4-31-1, Naka-Ochiai, Shinjuku, Tokyo,
> 161-8539, Japan
> tokimoto at mejiro.ac.jp
> ******************************************
>
> > 2018/07/03 7:04、Makoto Miyakoshi <mmiyakoshi at ucsd.edu>のメール:
> >
> > Dear Shingo,
> >
> > It's my turn to answer here in July.
> > After plotting STUDY ERSP for all clusters AND close the 'Edit & Plot
> clsuters' window by pressing 'ok', open variables in the Matlab workspace
> to find items (the names may not be exact)
> >
> > STUDY -> cluster(1,3) -> icaersp
> > STUDY -> cluster(1,3) -> ersptime
> > STUDY -> cluster(1,3) -> erspfreq
> >
> > cluster(1,3) means data for the Cluster 3.
> > STUDY.cluster(1,3).icaersp has dimension of erspfreq as vertical axis
> and ersptime as horizontal axis. You take mean across desired frequency
> bins and time points to reduce the data into one value for regression
> analysis.
> >
> > Makoto
> >
> >
> > On Mon, Jul 2, 2018 at 2:09 PM 時本真吾 <tokimoto at mejiro.ac.jp> wrote:
> > Dear EEGLAB experts,
> >
> > I would like to analyze the correlation between the power spectral
> density (in beta band) of an IC cluster and the individual differences of
> participants in questionnaires. Can I export the power spectral density in
> a specific band for an IC cluster for each experimental condition? Thank
> you in advance.
> >
> > Sincerely,
> >
> > ******************************************
> > Shingo Tokimoto, Ph.D.
> > in Linguistics and Psychology
> > Department of Foreign Languages
> > Mejiro University
> > 4-31-1, Naka-Ochiai, Shinjuku, Tokyo,
> > 161-8539, Japan
> > tokimoto at mejiro.ac.jp
> > ******************************************
> >
> > _______________________________________________
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> >
> > --
> > Makoto Miyakoshi
> > Swartz Center for Computational Neuroscience
> > Institute for Neural Computation, University of California San Diego
>
>

-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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