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

In AnalyzeFMRI: Functions for Analysis of fMRI Datasets Stored in the ANALYZE or NIFTI Format

Description

For a NIFTI .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.nifti(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.nifti.file.summary

AnalyzeFMRI documentation built on Oct. 5, 2021, 5:06 p.m.