[Eeglablist] Spectopo Parameters in STUDY
mmiyakoshi at ucsd.edu
Thu Jan 9 11:42:46 PST 2014
> My question is the following: are epochs of different trials but of the
same condition “glued” together?
The epoched data are stacked to the third dimension.
You can see it when you type EEG.data. If your data is epoched, you should
see, for example, 32x250x100 for 32ch, 250 time points, 100 epoch data.
2013/12/22 Marco Montalto <montaltomarco at onvol.net>
> Dear List,
> I have one question to ask regarding computing measures for power spectrum
> in STUDY structure. I have epochs of 60-second duration and am using the
> ‘continuous’ function in spectopo parameters when computing measures for
> power spectrum in STUDY. This function enables an epoch to be recognised as
> continuous data and therefore allows one to define epochs (“within the
> original epoch” so to speak) of shorter duration. I am defining epochs of
> 2-second duration within my original 60-second long epoch. My question is
> the following: are epochs of different trials but of the same condition
> “glued” together? This is important since if they are “glued” together I
> might be adding artefact to my power spectra. This has been brought to my
> attention by Mikołaj Magnuski.
> Thanks and looking forward to your reply.
> Marco Montalto
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Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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