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Dear Brian, This is definitely possible. You should use the 'Spectrum' option in the TF tool and then you'll only get a single spectrum for the window of interest. It can then be exported to a scalp x frequency image. Best, Vladimir On Wed, Oct 21, 2015 at 12:12 PM, Erickson <[log in to unmask]> wrote: > Dear Vladimir, > I am analyzing resting state EEG data in scalp-frequency space. I have had > success with this procedure: > > 1.) On epoched & preprocessed data, I computed the Hilbert transform. > 2.) when running "convert to images", I averaged over the frequency band > of interest. > 3.) then I entered these scans into the 2nd level design. > > However, is it possible to use FFT instead of a time-frequency estimation > method? > > Since we are not utilizing the time dimension in the eventual SPM, can we > drop time with an FFT and reduce the data to 3D (two spatial dimensions and > FFT power)? > > This is not as much for a practical reason (besides processing time) as to > reduce complexity that must be explained in a review. > > Thanks for your time. > > Best, > Brian > > Brian Erickson > Ph.D. Candidate, ACBS Program > Drexel University Department of Psychology > College of Arts and Sciences >