Generalized PPI Toolbox
The automated toolbox can do the following:
(a1) produce identical results to the current implementation in SPM
(a2) use the current implementation of PPI in SPM but using the regional mean instead of the eigenvariate
(a3) uses a generalized form that allows a PPI for each task to be in the same model using either the regional mean of eigenvariate
(b) creates the model using the output of one of the (a) options and the first level design
(c) estimates the model (/results directory)
(d) computes the contrasts specified
When using the toolbox, please cite the following paper:
McLaren, DG, Ries, ML, Xu, G, Johnson, SC. A Generalized Form of Context-Dependent Psychophysiological Interactions (gPPI): A Comparison to Standard Approaches. NeuroImage (in press).
Specifications
Recent Activity - Forums
RE: Contrasts in gPPI for .nii files posted by Andrew Gerlach on Jan 5
Second-level analysis failed: header file not found. posted by Elina Stocker on Dec 13, 2022
RE: gPPi not work with updated SPM12 (v6906) posted by Marine Fleury on Oct 8, 2022
RE: gPPI contrast multiple weighted conditions posted by Giorgio Papitto on Oct 5, 2022
[Task] does not exist. Program will exit posted by Julius Steding on Aug 29, 2022
RE: unable to run runOnSampleData: 'Unrecognized field name "mat".' posted by Katie Surrence on Aug 4, 2022
unable to run runOnSampleData: 'Unrecognized field name "mat".' posted by Katie Surrence on Aug 4, 2022
RE: Concatenation problem for GLM with parametric modulations posted by Giorgio Papitto on Jul 29, 2022
Help with P.contrast field/effects of interest posted by Hestia Moningka on Jul 20, 2022
RE: gPPi not work with updated SPM12 (v6906) posted by Ploon de Potter on Jun 9, 2022
Recent Activity - News
gPPI Methodological Paper posted by Donald McLaren on Mar 28, 2012
Recent Activity - Files
gPPI Program: gPPI Version 13.1 release
PPPIv13.1.tar.gz posted by Donald McLaren on Apr 24, 2014
Tutorials: PPPI Manual (and txt of Parameter Structures) release
PPPI_Manual_v7_12.docx posted by Donald McLaren on May 13, 2013
Tutorials: PPPI Manual (and txt of Parameter Structures) release
AttentionMATLABPrep.rtf posted by Donald McLaren on May 13, 2013
Tutorials: PPPI Manual (and txt of Parameter Structures) release
RepetitionMATLABPrep.txt posted by Donald McLaren on May 13, 2013
Tutorials: Powerpoint: gPPI Theory and Applications release
Zeffiro_gPPI_2013.pptx posted by Donald McLaren on May 10, 2013
Tutorials: Powerpoint: gPPI Tutorial release
gPPItutorial_2013_final.pptx posted by Donald McLaren on May 10, 2013
gPPI Test: Sample Dataset v1 release
running_gPPI_generic.zip posted by Donald McLaren on May 10, 2013
Create Sphere Mask: Version 1 release
create_sphere.zip posted by Donald McLaren on Apr 24, 2013