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FEAT/FAQ - FslWiki

fsl.fmrib.ox.ac.uk · 246 words · saved by 1 readers

There are many factors that affect how long FEAT takes to analyse a data-set. These include the speed of the machine, the amount of RAM and swap space available, the number of time points, the amount of activation present and the number of voxels in the data. In addition, higher level analyses take longer since first level analyses are carried out in native EPI space whilst higher level analyses are carried out in standard space and use FLAME - a sophisticated Bayesian mixed-effects estimation technique. Hence it is very difficult to give an accurate estimation for the length of time that FEAT should run. As a very rough guide, FEEDS includes (among other tests) a first level analysis with 180 time points and 64 x 64 x 21 voxels which takes less than 30 minutes on a modern PC (Athlon 2GHz) - for other machines see the FEEDS Timing Results. Higher level analyses is slower than this, and can often take 1-3 hours on a modern PC with a standard group size of 6-12 subjects.

All material for the FSL Course is available online, including full lecture recordings and practical overviews. FSL is a comprehensive library of analysis tools for FMRI, MRI and diffusion brain imaging data. It runs on macOS (Intel and Apple Silicon), Linux, and Windows (via the Windows Subsystem for Linux), and is very easy to install. Most of the tools can be run both from the command line and as GUIs ("point-and-click" graphical user interfaces). To quote the relevant references for FSL tools you should look in the individual tools' manual pages, and also please reference one or more…

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