Welcome to the FieldTrip website

10 October 2025

Robert and JM participated in a very inspiring and successful workshop in Marseille, celebrating the opening of the Marseille OPM lab, and the retirement of their 4D Neuroimaging SQUID system. Two days filled with the latest news from OPM-land, with inspiring and constructive discussions, and a collaborative mindset. Thanks and congratulations to our friends in Marseille, and good luck with your great scientific and clinical contributions to the field!

25 June 2025

Robert and Mikkel returned from the African Brain Data Network EEG workshop in Nigeria. It was a nice and intense week with lectures, experimental design, practical experience recording with various EEG systems, and hands-on EEG data analysis sessions. The interaction with the participants was great, and we look forward to see the research that will result from this. All course material, including slides and video recordings of the lectures are shared on the workshop page.

28 May 2025

During the MEG/EEG toolkit last week we noticed that some participants had issues with their MathWorks accounts to download and install the latest MATLAB version. We have now heard that MathWorks has been affected by a ransomware attack. Although our (and hopefully your) local MATLAB installations continue working just fine, it inconvenient as we are busy with preparing for the EEG workshop in Nigeria. For that workshop we want to use MATLAB online, i.e., running it all in the cloud, which would be the first time doing it like this. Let’s hope that MathWorks does not suffer too much and that they can get their systems up and running again.

7 May 2025

Together with the developers of other MEG and EEG analysis software (a.o. MNE-Python, SPM, EEGLAB) we wrote the paper Cycling on the Freeway: The perilous state of open-source neuroscience software in which we argue that the existing ecosystem of neuroscientific open-source software is brittle, and discuss why and how the neuroscience community needs to come together to ensure a healthy software ecosystem to the benefit of all. Please have a look and think about how you can contribute to the long-term continuation of projects like FieldTrip.

25 March 2025

From May 19-23 2025 we will host our annual MEG/EEG Tool-kit course in Nijmegen. During this 5-day toolkit course we will teach you advanced MEG and EEG data analysis skills. Pre-processing, frequency analysis, source reconstruction, analysis methods such as RSA and TRFs, and various statistical methods will be covered. Furthermore, we will give special attention to new opportunities in experimental design and measurements with Optically Pumped Magnetometer (OPM) systems and mobile EEG.

Preregistration is now open, see here.

25 March 2025

We have added three example scripts to the website that demonstrate how to compute EEG forward solutions. They show the similarities and differences between an analytic concentric spheres solution, a BEM solution, and a FEM solution. Furthermore, they show how to deal with geometrical units (millimeter, centimeter, meter) to get correct SI units in the forward and inverse solution.

• Compute EEG leadfields using a concentric spheres headmodel
• Compute EEG leadfields using a BEM headmodel
• Compute EEG leadfields using a FEM headmodel

If you have feedback on these examples, please post an issue on GitHub.

Note that there are also more elaborate tutorials using BEM and FEM for source reconstruction of EEG data.

23 November 2024

The CuttingEEG X conference at the Donders in Nijmegen and online was a great success with lots of positive feedback and interest from our 336 online + 42 onsite participants. All talks and discussions were not only live-streamed, but also recorded and are available on the CuttingEEG YouTube channel.