Welcome to the FieldTrip website

FieldTrip is the MATLAB software toolbox for MEG, EEG and iEEG analysis, which is released free of charge as open source software under the GNU general public license. FieldTrip is developed by members and collaborators of the Donders Institute for Brain, Cognition and Behaviour at Radboud University, Nijmegen, the Netherlands.

Please cite the reference paper when you have used FieldTrip 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, 2011; 2011:156869.

To get started, head over to the getting started documentation and the tutorials.

Latest release

The latest code developments can be tracked in detail on GitHub.

18 January, 2023

FieldTrip version 20230118 has been released with various improvements and bug fixes. See GitHub for the detailed list of updates.

Recent citations

These are recent citations on Pubmed, you can find a more complete list on Google Scholar.

Phase Alignment of Low-Frequency Neural Activity to the Amplitude Envelope of Speech Reflects Evoked Responses to Acoustic Edges, Not Oscillatory Entrainment

Oganian Y, Kojima K, Breska A, Cai C, Findlay A, Chang E, Nagarajan SS The Journal of Neuroscience, 2023 May 24; 43(21):3909-3921.

Rule Abstraction Is Facilitated by Auditory Cuing in REM Sleep

Pereira SI, Santamaria L, Andrews R, Schmidt E, Van Rossum MC, Lewis P The Journal of Neuroscience, 2023 May 24; 43(21):3838-3848.

Functional specialization and interaction in the amygdala-hippocampus circuit during working memory processing

Li J, Cao D, Yu S, Xiao X, Imbach L, Stieglitz L, Sarnthein J, Jiang T Nature Communications, 2023 May 22; 14:2921.

Distinct beta frequencies reflect categorical decisions

Rassi E, Zhang Y, Mendoza G, Méndez JC, Merchant H, Haegens S Nature Communications, 2023 May 22; 14:2923.

Stereoptic serious games as a visual rehabilitation tool for individuals with a residual amblyopia (AMBER trial): a protocol for a crossover randomized controlled trial

Simon-Martinez C, Antoniou MP, Bouthour W, Bavelier D, Levi D, Backus BT, Dornbos B, Blaha JJ, Kropp M, Müller H, Murray M, Thumann G, Steffen H, Matusz PJ BMC Ophthalmology, 2023 May 17; 23:220.

News and announcements

You can also follow us on Mastodon.

7 February, 2023

From May 22-26 we will host our annual MEG/EEG toolkit course at the Donders in Nijmegen. In this 5-day course we will teach you advanced MEG and EEG data analysis skills. Pre-processing, frequency analysis, source reconstruction, connectivity analysis and various statistical methods will be covered. The toolkit consists of a number of lectures, followed by hands-on sessions in which you will be tutored through the analysis of a MEG data set using the FieldTrip toolbox. Furthermore, you have the opportunity to work on your own data with the guidance of experienced tutors.

Preregistration is now open, see here.

20 December, 2022

With the negative developments of Twitter, we feel it is more appropriate to continue posting news item and release updates on Mastondon. you can continue to follow us on https://fosstodon.org/@fieldtriptoolbox.

07 October, 2022

A while ago we have added some new visualization functionality to ft_multiplotER, which now allows for MNE-Python style butterfly plots, such as in the attached image. All you need is to specify some options in your cfg: cfg.viewmode = 'butterfly', cfg.linecolor = 'spatial', along with the proper layout. Go and check it out!

30 August, 2022

After having been postponed for 2 years, Biomag 2020 is ‘on’! We are enjoying lively social interactions and discussions with our friends and colleagues, and listening to interesting scientific stuff. The picture shows our own Bob Bramson in action on the stage of the Bramall concert hall at Birmingham University.

07 May, 2022

In a few days, and after an absence of 2 years, we will again host our Donders advanced MEG/EEG-toolkit on-site. We are excited to finally be able to teach in real life again. With the help of our youngest future colleague all workshop PCs have been prepared and tested.

15 April, 2022

In the past we used an FTP server to distribute files, but as of April 2022 we switched to a new download server that can be found on https://download.fieldtriptoolbox.org. It supports WebDAV, which means that you can download individual files using your web browser. You can also download a complete directory (with subdirectories) at once using a specialized WebDAV client such as CyberDuck or FileZilla. On Windows and macOS you can even mount the WebDAV server as a “network file system” and treat it as a network drive.

10 March, 2022

From May 9-13 we will host the MEG/EEG FieldTrip data analysis toolkit at the Donders Centre for Cognitive Neuroimaging (DCCN) in Nijmegen. The toolkit course is aimed at PhD and postdoctoral researchers that already have some experience with EEG and/or MEG data acquisition (either a pilot or a full study) and that have a good understanding of their own experimental design. Furthermore, we expect that you know the basics of MATLAB and that you already have some experience with MEG/EEG preprocessing and analysis. We will teach you advanced data analysis methods and cover preprocessing, frequency analysis, source reconstruction, connectivity and various statistical methods. Furthermore, we will give attention to good practices for reproducible research, Open Data and Open Science.

We hope and expect that we will be able to teach this toolkit on site.

See the toolkit2022 page for further details.