The latest release of the FMRIB Software Library (3.0, October 2002)
is now available for downloading from http://www.fmrib.ox.ac.uk/fsl
There are many additions since the last release (June 2001), the main
ones being:
* FEAT v5:
- Bayesian multi-subject FMRI analysis: General GLM for higher-level
analysis (e.g. analysis across sessions or across subjects; paired
t-tests, three-level groupings etc): FLAME (FMRIB's Local Analysis
of Mixed Effects). FLAME uses very sophisticated methods for
modelling and estimating the random-effects component of the
measured inter-session mixed-effects variance, using MCMC to get an
accurate estimation of the true random-effects variance and degrees
of freedom at each voxel.
* MELODIC v2:
- Probabilistic ICA (PICA) for FMRI. By adding a Gaussian noise model
to the ICA model, and automatically estimating the dimensionality
(the number of non-Gaussian components), it is now possible to
create meaningful Z-statistic maps for each spatial component,
allowing inference ("thresholding").
- Inference on the Z-statistic images is carried out with a
Gaussian/Gamma mixture model (fitted using EM), fitting central
noise and activation classes; thus alternative hypothesis testing
is used.
* Interoperation with FreeSurfer and AFNI
For a more complete list see http://www.fmrib.ox.ac.uk/fsl
Thanks for your interest, enjoy!
the FMRIB Analysis Group.
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