Extensions
The FieldTrip toolbox is part of a larger, collaborative ecosystem. We encourage researchers and developers to open-source and share their own extensions, plugins, algorithms, graphical user interfaces, and analysis pipelines that extend, build upon, or interface with FieldTrip. To support community-driven development, we collect and list known contributions on this page.
⚠️ Please note that these extensions are maintained by their respective authors. The FieldTrip team does not endorse them or provide support. Contact the respective authors for assistance.
To have your own extension listed here, please contact the FieldTrip maintainers by email or send a pull request.
nonlinearassociation
The nonlinear association function calculates a delay-dependent nonlinear association coefficient (h²) between MEG/EEG channels by fitting piecewise linear regressions to signal scatterplots across time lags, providing a measure that detects both linear and nonlinear relationships where the classical correlation ratio equals the squared Pearson coefficient for purely linear dependencies.
This extension was authored by Inge Westmijse. For more info see here.
realtime_hilbert
The realtime_hilbert extension is a real-time neurofeedback application that estimates EEG gamma phase synchronization between intrahemispheric electrode pairs (F3-P3 and F4-P4) to drive a visual feedback interface, while performing online artifact rejection of EOG and EMG signals.
This extension was authored by Marco Rotonda. For more info see here.