update_S

Update S for VB FC Bayesian brain mapping

internal

Implements Bayesian brain mapping models, including the prior
ICA (independent components analysis) model proposed in Mejia et al. (2020)
<doi:10.1080/01621459.2019.1679638> and the spatial prior ICA model
proposed in proposed in Mejia et al. (2022)
<doi:10.1080/10618600.2022.2104289>. Both models estimate subject-level
brain as deviations from known population-level networks, which are
estimated using standard ICA algorithms. Both models employ an
expectation-maximization algorithm for estimation of the latent brain
networks and unknown model parameters. Includes direct support for 'CIFTI',
'GIFTI', and 'NIFTI' neuroimaging file formats.

Amanda Mejia

BayesBrainMap

Estimate Brain Networks and Connectivity with Population-Derived
Priors

Damon Pham

Daniel Spencer

Mary Beth Nebel

update_S function

<dl><dt>mu_tau2, mu_A, E_AtA, </dt>
<dd>Most recent posterior estimates</dd>
<dt>D_inv, D_inv_S</dt>
<dd>Some pre-computed quantities.</dd>
<dt>BOLD</dt>
<dd>(\(T \times V\) matrix) preprocessed fMRI data.</dd>
<dt>nNets, nvox, ntime</dt>
<dd>Number of networks, number of data locations, and time series length</dd>
<dt>final</dt>
<dd>If TRUE, return cov_S. Default: <code>FALSE</code></dd></dl>

Arguments

Update S for VB FC Bayesian brain mapping — update_S

<dl>

<dt>mu_tau2, mu_A, E_AtA, </dt>
<dd>Most recent posterior estimates</dd>


<dt>D_inv, D_inv_S</dt>
<dd>Some pre-computed quantities.</dd>


<dt>BOLD</dt>
<dd>(\(T \times V\) matrix) preprocessed fMRI data.</dd>


<dt>nNets, nvox, ntime</dt>
<dd>Number of networks, number of data locations, and time series length</dd>


<dt>final</dt>
<dd>If TRUE, return cov_S. Default: <code>FALSE</code></dd>

</dl>

update_S: Update S for VB FC Bayesian brain mapping

Description

Usage

Value

Arguments