ar_parameters: Extract Estimated AR Parameters from fmri_lm Fit

In bbuchsbaum/fmrireg: R package for the anlysis of fmri data

Extract Estimated AR Parameters from fmri_lm Fit

Description

Retrieves the estimated autoregressive parameters from a fitted fMRI linear model that used AR error modeling.

Usage

ar_parameters(object, ...)

## S3 method for class 'fmri_lm'
ar_parameters(object, ...)

Arguments

object	An object of class fmri_lm
...	Additional arguments (currently unused)

Value

A numeric vector of AR coefficients if AR modeling was used, or NULL if no AR modeling was performed (cor_struct = "iid"). For runwise estimation without global AR, returns the average of run-specific estimates.

Examples

## Not run: 
# Fit model with AR(1) errors
fit <- fmri_lm(onset ~ hrf(cond), dataset = dset, cor_struct = "ar1")
ar_parameters(fit)  # Extract estimated AR(1) coefficient

## End(Not run)

bbuchsbaum/fmrireg documentation built on June 10, 2025, 8:18 p.m.