cluster.shell.alpha

The shells of a cluster are more transparent the closer they are to the threshold, and fully opaque at the highest level of their sign.

internal

Provides high-level access to neuroimaging data from standard software packages like 'FreeSurfer' <https://freesurfer.net/> on the level of subjects and groups. Load morphometry data, surfaces and brain parcellations based on atlases. Mask data using labels, load data for specific atlas regions only, and visualize data and statistical results directly in 'R'.

Tim Schc3<a4>fer

fsbrain

Managing and Visualizing Brain Surface Data

Tim Schäfer

The General Hospital Corporation (Boston, MA) 

Van Essen Lab 

Alexander Schaefer

Ru Kong

Lingzhong Fan

Edmund T. Rolls

Matthew F. Glasser

Kathryn Mills

cluster.shell.alpha function

<dl><dt>level</dt>
<dd>single number, the iso-level of the shell.</dd>
<dt>threshold</dt>
<dd>single positive number, the cluster threshold.</dd>
<dt>levels</dt>
<dd>numerical vector of all iso-levels, see <code>volume.cluster.levels</code>.</dd>
<dt>alpha_range</dt>
<dd>numerical vector of length 2, the alpha value of the outermost and the innermost shell.</dd></dl>

Arguments

Compute the alpha value of a cluster shell. — cluster.shell.alpha

<dl>

<dt>level</dt>
<dd>single number, the iso-level of the shell.</dd>


<dt>threshold</dt>
<dd>single positive number, the cluster threshold.</dd>


<dt>levels</dt>
<dd>numerical vector of all iso-levels, see <code>volume.cluster.levels</code>.</dd>


<dt>alpha_range</dt>
<dd>numerical vector of length 2, the alpha value of the outermost and the innermost shell.</dd>

</dl>

Compute the alpha value of a cluster shell.

cluster.shell.alpha: Compute the alpha value of a cluster shell.

Description

Usage

Value

Arguments