FieldTrip workshop in Göttingen

Georg-Elias-Müller-Institut für Psychologie

Gosslerstraße 14 D-37073 Göttingen

Room 2.122

February 8-9, 2014

Lilla Magyari and Nietzsche Lam

The local organizers are Danai Theodosopoulou and Carsten Schmidt

Saturday 8th February

Session I

10:00 – 10:15 Registration, welcome, opening remarks

10:15 – 11:15 Lecture: An introduction to the MEG/EEG and the FieldTrip toolbox

11:15 – 11:30 Coffee Break

11:30 – 13:30 Hands-on: Initiation to FieldTrip & getting started with EEG data (preprocessing, ERP)

13:30 – 14:45 Lunch

Session II

14:45 – 15:45 Lecture: Fundamentals of neuronal oscillations and synchrony

15:45 – 16:00 Coffee Break

16:00 – 18:00 Hands-on: Time-frequency analysis of power

18:00 – 18:30 Wrap-up-the-day and Summary

Sunday 9th February

Session III

9:00 – 10:15 Lecture: Non-parametric permutation techniques

10:15 – 10:30 Coffee break

10:30 – 12:30 Hands-on: Statistical Analyses

12:30 – 13:45 Lunch

Session IV

13:45 – 14:45 Lecture: Source reconstruction in FieldTrip

14:45 – 15:00 Coffee break

15:00 – 17:00 FieldTrip Playground (bring your own data)

17:00 – 17:30 Wrap-up-the-day and Summary

For the hands-on sessions you have to start MATLAB. To ensure that everything runs smooth, we will work with a clean and well-tested version of fieldtrip that is distributed on a USB stick, rather than the older version you might already have installed. Furthermore, the tutorial data will also be distributed on the USB stick.

If you want to download it in advance, please go to and get

  • all files in the tutorial/eventrelatedaveraging directory
Depending on the unzip program you are using (e.g. Winrar), the name of the zip file might also appear as directiory, resulting in path_to_directory/fieldtrip-xxxxxxxx/fieldtrip-xxxxxxxx, i.e. the fieldtrip directory in a fieldtrip directory. Please fix that by moving all files one level up.

After copying all files to your computer and unzipping then, you start MATLAB. To ensure that the right version of fieldtrip is used, and not another version (such as the one included in SPM or EEGLAB), you type in the MATLAB command window

cd path_to_directory/fieldtrip-xxxxxxxx
Please do NOT use the graphical path management tool from MATLAB. In this hands-on session we'll manage the path from the command line, but in general you are much better off using a startup.m file than the path GUI.

Please do NOT add fieldtrip with all subdirectories, subdirectories will be added automatically when needed, but only when needed.

The restoredefaultpath command clears your path, keeping only the official MATLAB toolboxes. The addpath(pwd) statement adds the present working directory, i.e. the directory containing the fieldtrip main funcctions. The ft_defaults command ensures that all required subdirectories are added to the path.

If you get the error “can't find the command ft_defaults” you should check the present working directory.

After installing fieldtrip to your path, you change into the data directory

cd path_to_directory/data