f.spectral.summary {AnalyzeFMRI}R Documentation

plots graphical summary of spectral properties of an fMRI dataset

Description

For an analyze .img file the periodogram of the time series are divided by a flat spectral estimate using the median periodogram ordinate. The resulting values are then combined within each Fourier frequency and quantiles are plotted against frequency. This provides a fast look at a fMRI dataset to identify any artifacts that reside at single frequencies.

Usage

f.spectral.summary(file, mask.file, ret.flag=FALSE)

Arguments

file

file The location of .img file

mask.file

mask.file Optional location of a .img file containing a mask. If not given then one is created.

ret.flag

ret.flag flag specifying whether to return the array of quantiles at each frequency

Value

If ret.flag = TRUE the an array of quantiles at each frequency is returned

See Also

f.analyze.file.summary


[Package AnalyzeFMRI version 1.1-23 Index]