fmri_reg2vox

Description

FMRI_REG2VOX Maps ROI-level data back to voxel space for visualisation. Assigns each voxel the value of its corresponding atlas ROI, expanding an ROI-level statistical map or time series into a full voxel-level brain map. Inverse of fmri_vox2reg.

Usage

vox = fmri_reg2vox(reg, atlas)

Inputs

  • REG: ROI-level data: (R x 1) statistical map or (R x T) time series, where R is the number of ROIs in the selected atlas.

  • ATLAS: Atlas number (see atlas list below). Default: 1 (AAL).

Outputs

  • VOX: Voxel-level map (228453 x 1) or time series (228453 x T). Each voxel takes the value of its atlas ROI; voxels with no atlas label are set to zero.

Examples

vox_map = fmri_reg2vox(roi_stats, 3);   % Harvard-Oxford Cortical
fmri_showslices(vox_map, 1, 2, [0 5])
Atlas numbers:
1  = AAL / MarsBar (Automated Anatomical Labeling, 116 ROIs, default)
2  = Harvard-Oxford Subcortical Structural Atlas (21 ROIs)
3  = Harvard-Oxford Cortical Structural Atlas (48 ROIs)
4  = Cerebellar Atlas (MNI152, FLIRT affine, 28 ROIs)
5  = Cerebellar Atlas (MNI152, FNIRT nonlinear, 28 ROIs)
6  = JHU ICBM-DTI-81 White-Matter Labels (48 ROIs)
7  = JHU White-Matter Tractography Atlas (20 ROIs)
8  = Juelich Histological Atlas (62 ROIs)
9  = MNI Structural Atlas (9 ROIs)
10  = Oxford-Imanova Striatal Structural Atlas (3 ROIs)
11  = Oxford-Imanova Striatal Connectivity Atlas, 3 sub-regions
12  = Oxford-Imanova Striatal Connectivity Atlas, 7 sub-regions
13  = Oxford Thalamic Connectivity Probability Atlas (25 ROIs)
14  = Craddock Parcellation 200 ROI
15  = Craddock Parcellation 400 ROI
16  = Craddock Parcellation 500 ROI
17  = Craddock Parcellation 600 ROI
18  = Craddock Parcellation 950 ROI
19  = Brodmann Areas (48 regions)

See Also

  • fmri_vox2reg

  • fmri_regionmask

  • fmri_regionnumber