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January 23, 2003 12:39PM
Hullo.

Based on the spiking problems of 3T-1, 3dDespike was created as an adjunct (preparatory) treatment to bandpass filtering of 3d+time EPIRT datasets, wherein time-series output is transformed into deviations from some mean. Presumably linear and non-linear trends have been eliminated.

Does this treatment of the data make the customary z-transformation (needed for merging of data from several brains) no longer necessary? What will z-transformation with -1zscore actually do to a dataset that has already been bandpass-filtered?
Subject Author Posted

z-transformations of despiked/bandpass filtered data?

Jim Bjork January 23, 2003 12:39PM

Re: z-transformations of despiked/bandpass filtered data?

bob cox January 23, 2003 02:24PM

z-transformations of *bandpass* filtered data?

Jim Bjork January 23, 2003 03:54PM

3dDespike & 3dFourier

Philippe Goldn January 31, 2003 08:55PM



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