AFNI 3D MultiVariate Modeling (3dMVM)¶
Library: AFNI | Docker Image: brainlife/afni
Function¶
Multivariate modeling framework supporting ANOVA/ANCOVA designs with between and within-subject factors.
Modality: Subject-level 3D NIfTI/AFNI volumes with data table specifying factors.
Typical Use: Complex repeated measures and mixed designs.
Key Parameters¶
-dataTable (structured input table), -bsVars (between-subject variables), -wsVars (within-subject variables), -qVars (quantitative variables)
Key Points¶
Most flexible group analysis tool in AFNI. Handles complex repeated measures designs. Requires R.
Inputs¶
| Name | Type | Required | Label | Flag |
|---|---|---|---|---|
prefix |
string |
Yes | Output filename prefix | -prefix |
table |
record(mvm_table_row)[] |
Yes | Data table rows (Subj, Group, Cond, InputFile) | |
bsVars |
string |
No | Between-subjects factors and quantitative variables formula | -bsVars |
wsVars |
string |
No | Within-subject factors formula | -wsVars |
qVars |
string |
No | Quantitative variables (covariates) list | -qVars |
qVarCenters |
string |
No | Centering values for quantitative variables | -qVarCenters |
num_glt |
int |
No | Number of general linear t-tests | -num_glt |
gltLabel |
string[] |
No | GLT labels (k label pairs) | -gltLabel |
gltCode |
string[] |
No | GLT coding specifications | -gltCode |
num_glf |
int |
No | Number of general linear F-tests | -num_glf |
glfLabel |
string[] |
No | GLF labels | -glfLabel |
glfCode |
string[] |
No | GLF coding specifications | -glfCode |
mVar |
string |
No | Treat within-subject levels as simultaneous variables | -mVar |
SS_type |
int |
No | Sum of squares type (2 or 3) | -SS_type |
wsMVT |
boolean |
No | Within-subject multivariate testing | -wsMVT |
SC |
boolean |
No | Output sphericity-corrected F-statistics | -SC |
GES |
boolean |
No | Report generalized eta-squared effect sizes | -GES |
mask |
File |
No | Process voxels within mask only | -mask |
jobs |
int |
No | Number of parallel processors | -jobs |
Accepted Input Extensions¶
- table:
.nii,.nii.gz,+orig.HEAD,+orig.BRIK,+tlrc.HEAD,+tlrc.BRIK - mask:
.nii,.nii.gz,+orig.HEAD,+orig.BRIK,+tlrc.HEAD,+tlrc.BRIK
Outputs¶
| Name | Type | Glob Pattern |
|---|---|---|
stats |
File |
$(inputs.prefix)+orig.HEAD, $(inputs.prefix)+tlrc.HEAD |
log |
File |
$(inputs.prefix).log |
Output Extensions¶
- stats:
+orig.HEAD,+orig.BRIK,+tlrc.HEAD,+tlrc.BRIK
Docker Tags¶
Available versions: latest, 16.3.0
Categories¶
- Functional MRI > AFNI > Statistical Analysis