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.

25 October, 2023

FieldTrip version 20231025 has been released, with added functionality for a realtime interface to a sensys fluxgate magnetometer. 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.

Visual objects approaching the body modulate subsequent somatosensory processing at 4 months of age

Orioli G, Parisi I, van Velzen JL, Bremner AJ Scientific Reports, 2023 Nov 21; 13:19300.

Long-term exposure to high altitude reduces alpha and beta bands event-related desynchronization in a Go/NoGo task

Hou J, Wang C, Jia L, Ma H Scientific Reports, 2023 Nov 13; 13:19719.

Virtual lesions in MEG reveal increasing vulnerability of the language network from early childhood through adolescence

Williamson BJ, Greiner HM, Kadis DS Nature Communications, 2023 Nov 11; 14:7313.

Dorsal subthalamic nucleus targeting in deep brain stimulation: microelectrode recording versus 7-Tesla connectivity

Kremer NI, Roberts MJ, Potters WV, Dilai J, Mathiopoulou V, Rijks N, Drost G, van Laar T, van Dijk JM, Beudel M, de Bie RM, van den Munckhof P, Janssen ML, Schuurman PR, Bot M Brain Communications, 2023 Nov 11; 5(6):fcad298.

Alpha-frequency feedback to early visual cortex orchestrates coherent naturalistic vision

Chen L, Cichy RM, Kaiser D Science Advances, 2023 Nov 10; 9(45):eadi2321.

News and announcements

You can also follow us on Mastodon.

25 October 2023

We are coming up to the 100-year anniversary of the discovery of human EEG.

In celebration of this seminal moment for human neuroscience, we are asking the FieldTrip, the EEG, and the neuroscience community at large, to document the impact this discovery has had on our understanding of the brain and to share thoughts on the short, medium, and long-term future of human non-invasive scalp EEG through this online survey. Importantly, this survey will also help in defining our collective perspectives on future research priorities.

I hope you will be able to spare the 10-15 minutes it will take to complete the survey and make your views heard about the past and future of EEG.


Thank you for your time.

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.