Welcome to the FieldTrip wiki

FieldTrip is the MATLAB software toolbox for MEG and EEG analysis that is being developed by a team of researchers at the Donders Institute for Brain, Cognition and Behaviour in Nijmegen, the Netherlands in close collaboration with collaborating institutes. The development of FieldTrip currently receives support from the ChildBrain project and from the Netherlands Organization for Scientific Research (NWO) and has previously been supported by the Human Connectome project and BrainGain.

The toolbox offers advanced analysis methods of MEG, EEG, and invasive electrophysiological data, such as time-frequency analysis, source reconstruction using dipoles, distributed sources and beamformers and non-parametric statistical testing. It supports the data formats of all major MEG systems (CTF, Elekta/Neuromag, 4D/BTi, Yokogawa) and of most popular EEG systems, and new formats can be added easily. FieldTrip contains high-level functions that you can use to construct your own analysis protocols in MATLAB. Furthermore, it easily allows developers to incorporate low-level algorithms for new EEG/MEG analysis methods.

The FieldTrip software is released free of charge as open source software under the GNU general public license.

This FieldTrip website is a Wiki (just like Wikipedia), which allows all visitors to contribute, very quickly and easily, without the need for registration. The IP addresses of people that make changes are logged, and they can be blocked if required. Please act responsibly and only make changes that improve this site.

Please cite the FieldTrip Reference Paper when you have used FieldTrip for data analysis in your study.

Robert Oostenveld, Pascal Fries, Eric Maris, and Jan-Mathijs Schoffelen, “FieldTrip: Open Source Software for Advanced Analysis of MEG, EEG, and Invasive Electrophysiological Data,” Computational Intelligence and Neuroscience, vol. 2011, Article ID 156869, 9 pages, 2011. doi:10.1155/2011/156869

To get started with FieldTrip, please continue reading the getting started documentation.

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12 June, 2018

On 17 June 2018 Maria Carla Piastra, Sophie Schrader and Simon Homölle will host a workshop the OHBM2018 conference. The course is aimed at researchers who want to learn how to do MEG and/or EEG source reconstruction. This intense one-day workshop will explain state-of-the-art MEG and EEG source reconstruction methods. Special emphasis will be given to new features available now in Fieldtrip to solve the EEG and MEG forward solution with advanced finite element methods. The workshop will consist of a number of lectures, followed by hands-on sessions in which you will be tutored through the complete analysis of a MEG, EEG and MRI data set using the FieldTrip toolbox. As the focus is on source reconstruction, topics that will NOT be covered in great detail are segmenting, artifact handling, averaging, frequency and time-frequency analysis, statistics. For the hands-on sessions you should bring a laptop with MATLAB installed. More information about the program can be found at the OHBM website or here.

6 March, 2018

Springer Nature has updated its policies - Nature journals now ask researchers who submit papers that rely on bespoke software to provide the programs for peer review. More details are in this editorial, the guidelines to authors have been updated and a code and software submission checklist is available.