fmristats 0.0.6

Modelling the data and not the images in FMRI

Modelling the data and not the images in FMRI
=============================================

Current approaches to the analysis of functional magnetic resonance
imaging (FMRI) data apply various preprocessing steps to the original
FMRI. These preprocessings lead to a general underestimation of residual
variance in the downstream analysis. This negatively impacts the type I
error of statistical tests and increases the risk for reporting false
positive results.

This is the first statistical software tool which implements the *model
based* (MB) estimator for FMRI data models. It is a new and original
method for the statistical analysis of FMRI of brain scans. MB
estimation combines all preprocessing steps of the standard approaches
into one single modelling step. Without altering the original 4D-image,
the method results in smooth fits of the underlying parameter fields.
More importantly, the method yields a trustworthy estimate of the
uncertainty in BOLD effect estimation.

The availability of these uncertainty fields allows to model FMRI
studies by random effects meta regression models, acknowledging that
individual subjects are random entities, and that the certainty at which
the actual BOLD effect in an individual can be estimated from an FMRI
varies across the brain and between the subjects.

MB estimation allows to process and report BOLD effects in ati units. In
particular multicentre studies gain power by its use: if an effect is
present in your data, you will be more likely to find it.

Citing the MB estimator and this software:

Thomas W. D. Möbius (2018) Modelling the data and not the images in
FMRI, ArXiv e-prints, arXiv:1809.07232

Thomas W. D. Möbius (2018) fmristats: Modelling the data and not the
images in FMRI (Version 0.0.6) [Computer program]. Available at
http://fmristats.github.io/

Thank you for citing this project.

.. changelog:: 0.0.6

* Added .ravel to Image: image.ravel() will return a copy of the 1-D
flattend data that do not contain zeros or nan.
* Added .components to Image: image.components() will label the
non-zero, path-connected components in the image.
* Added .detect_peaks() to Image: Detect the peaks in an image and
return a list of their indicies.
* Beautified the output of picture(). (A legend and a colourbar are
now added by default.)
* MetaResult has been renamed to PopulationResult. It is still
possible to load a MetaResult from disk. However, this is now
depreciated.
* A PopulationMap can now store an ATI-reference.
* Result has now the option to norm the BOLD-effect field to ATI
with result.norm_to_ati().
* The function image2nii has now the option to zero any nan in the
image. Needed for data export to Nistats.
* fmriprune and fsl4prune now give a name to mask they produce.
* Added nipype to install_requires.
* Added a warning to --inverse in fmrimap that the function
currently only works for Warp and Displacement.


.. changelog:: 0.0.5

* Thus far creating the data matrix dropped between block
observations and demeaned the time vector for numerical stability
and convenience. This is still the default behaviour but there is
now the option to not follow the default.

* CLI-argument to --fit was ignored in fmriprune, fsl4prune and
thus always reverted to the default template. Fixed.

.. changelog:: 0.0.4

This is the first official version.