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April 12, 2022 04:45PM
Did you visualize some of your power spectra, both before and after taking the log (or log-log, in your case) of it? Are you sure you aren't including any super-low freqs that are essentially baseline, that might skew your results? A super high exponent for a power spectrum suggests that baseline might be left in your data.

I would try visualizing your data (here, power spectra, etc.) as a first means for QCing it.

I am also not sure what a statistically appropriate way to average PLEs across voxels would be.

--pt
Subject Author Posted

3dPeriodogram/3dLombScargle - Preprocessing

Philipp April 12, 2022 01:27PM

Re: 3dPeriodogram/3dLombScargle - Preprocessing

ptaylor April 12, 2022 04:45PM

Re: 3dPeriodogram/3dLombScargle - Preprocessing Attachments

Philipp April 13, 2022 06:41AM

Re: 3dPeriodogram/3dLombScargle - Preprocessing

ptaylor April 13, 2022 08:55AM

Re: 3dPeriodogram/3dLombScargle - Preprocessing

Philipp April 13, 2022 10:23AM



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