f.spectral.summary

<code>file</code> The location of .img file

file

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

mask.file

<code>ret.flag</code> flag specifying whether to return the
    array of quantiles at each frequency

ret.flag

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.

utilities

Functions for I/O, visualisation and analysis of
        functional Magnetic Resonance Imaging (fMRI) datasets stored in
        the ANALYZE or NIFTI format.

f.spectral.summary: plots graphical summary of spectral properties of an fMRI dataset

Description

Usage

Arguments

Value

See Also