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Identifying fMRI Model Violations with Lagrange Multiplier Tests (Ben Cassidy)

This software comprises tools for identifying model violation in Functional Magnetic Resonance Imaging analysis. The diagnostic tests are available as a MATLAB toolbox, and can be run from the MATLAB command line or incorporated in batch scripts as part of a full fMRI analysis pipeline.

The current version includes tests for violation of the following model assumptions:
– Double Gamma (canonical) hemodynamic response function
– Double Gamma and temporal derivative HRF (derivative as defined in SPM software)
– Double Gamma and temporal derivative HRF (derivative as defined in FSL software)
– Time-varying HRF
– Non-linear HRF

Download software (version 0.3)
Latest software version and development branches available at https://github.com/baca790/fmriVIOLA

Cassidy, B., Long, C.J., Rae, C and Solo, V.
Identifying fMRI model violations with Lagrange multiplier tests.
IEEE Transactions in Medical Imaging (in press 03/04/2012).

Cassidy, B and Solo, V.
fMRI Model Diagnostics for the Double Gamma and Temporal Derivative,
IEEE International Symposium on Biomedical Imaging, 2012

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