maskL Applies a left hemisphere mask to a 3D volume

Syntax

V = maskL(V)
[V, mask] = maskL(V)

V = maskL(V) applies a left hemisphere mask to the input volume V, zeroing out voxels in the right hemisphere.

[V, mask] = maskL(V) also returns the logical mask used to select the left hemisphere.

V = maskL(rand(100,100,50));
[V, mask] = maskL(getAllenTemplate(100));

V - input volume (numeric array) 3D array to be masked.

V - masked volume (numeric array) Volume with right hemisphere voxels set to zero.

mask - logical mask (logical array) Logical array indicating left hemisphere voxels.

Mehul Gajwani, Monash University, 2025