arf3DS4 (version 2.5-4)

fitConnectivity: Estimate connectivity of an ARF model

Description

fitConnectivity estimates the functional connectivity between activated regions in an ARF model based on trial-to-trial amplitude variation. It uses the single-trial data (extracted from the raw time-series using makeSingleTrialEvents), to estimate the trial-by-trial amplitudes of each region in the ARF model.

Usage

fitConnectivity(arfmodel, funcfilename="single_events.nii.gz")

Arguments

arfmodel

An ARF model object (class model)

funcfilename

Filename of the volume containing the single-trial data.

Value

• Returns an object of class arfcorrelation including the region by time matrix of amplitude time-series and the estimated correlations.

Details

Each volume of the file specified in funcfilename should contain estimates of a single-trial (see makeSingleTrialEvents).

See Also

model, makeSingleTrialEvents, arfcorrelation, roiConnectivity