fmriu.freq.obs2freq: Observations to Frequency Spectrum

In neurodata/fmriutils: fMRI Derivative Utilities

Description

A utility to convert timeseries data to frequency spectra.

Usage

fmriu.freq.obs2freq(observations, tr = NaN, lc = 0.01, hc = NaN,
  normalize = TRUE, spectrum = "amp")

Arguments

observations:	[[n]][nt, nroi] a list of signals for n subjects, each containing nt timesteps and nroi rois.
tr:	[1] the repetition time (in sec) of the dataset. corresponds to the time to take a single timestep.
lc:	[1] the lower cutoff (in Hz) below which the fourier domain components will be set to zero.
hc:	[1] the higher cutoff (in Hz) above which the fourier domain components will be set to zero.
spectrum='amp':	the frequency option to use for computations. Can be 'amp' (amplitude) or 'pow' (power).

Value

amp_data: [[n]][nt/2, nroi] the frequency spectrum of the dataset.

Author(s)

Eric Bridgeford

neurodata/fmriutils documentation built on May 14, 2019, 2:30 p.m.