''Authors: Jeremy Moreau''

<<TableOfContents(2,2)>>

This tutorial introduces dipole fitting and visualisation in Brainstorm. You will need to have completed the introductory tutorials up to "Tutorial 16: Average response" before undertaking this tutorial.

== Fitting dipoles using process FieldTrip: ft_dipolefitting ==
This process wraps the FieldTrip function'' ft_dipolefitting''. For background information on the implementation of the dipole modelling see [[http://www.fieldtriptoolbox.org/tutorial/natmeg/dipolefitting|the FieldTrip dipole fitting tutorial]] or watch [[https://youtu.be/pFdCWsqPEFg|this video]]. Note that in order to use this process you will need to [[http://www.fieldtriptoolbox.org/download|have FieldTrip installed]] and added to your Matlab path.

We will be fitting dipoles to the auditory ERFs computed in "Tutorial 16: Average response". In this first step, we will fit a single dipole to the peak of the M100 ERF component.

{{attachment:tut_dipolefitting_m100_traces.png}}

 1. Open the protocol TutorialIntroduction and switch to the "functional data" view.
 1. Expand the run 02 folder (not the Raw link), and drag the average time series "Avg: standard" into the Process1 box.
 1. Click on "Run" and select the process Sources -> FieldTrip: ft_dipolefitting.

{{attachment:tut_dipolefitting_processbox.png}}