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).
Execution Options
Specifications
Recent Activity - Forums
RE: Estimation failed - Warning: Missing Conditions! Invalid Contrast posted by ka251 on Jul 28
Estimation failed - Warning: Missing Conditions! Invalid Contrast posted by ka251 on Jul 28
RE: pre-post contrast gPPI posted by Batiah Keissar on Jun 15
RE: pre-post contrast gPPI posted by Donald McLaren on Jun 12
RE: PPI model P.Tasks posted by Donald McLaren on Jun 12
PPI model P.Tasks posted by Batiah Keissar on Jun 10
pre-post contrast gPPI posted by Batiah Keissar on May 13
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