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6 changes: 3 additions & 3 deletions tutorials/09_source/Model_Settings.md
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Expand Up @@ -39,9 +39,9 @@ pop up the window below:
The top edit box, *Model (click to select)*, specifies the type of head
model -- spherical model, template boundary element model (BEM), or custom model. The spherical
head model uses four spherical surfaces (skin, skull, CSF, cortex) to
model the brain. The BEM model is composed of three 3-D surfaces (skin,
model the head. The BEM model is composed of three 3-D surfaces (skin,
skull, cortex) extracted from the MNI (Montreal Neurological Institute)
canonical template brain also used in SPM. The BEM model is more
canonical template brain also used in Statistical Parametric Mapping (SPM). The BEM model is more
realistic than the four concentric spheres model and will return more
accurate results. The spherical head model is kept for backward
compatibility purposes and should not be used for
Expand Down Expand Up @@ -203,4 +203,4 @@ When plotting dipole sources in the next [section of the tutorial](/tutorials/09

In this case, we are using the tutorial data and the standard BEM model described in the previous sections. The BEM head model mesh was extracted from the average MRI used for plotting, so the alignment is perfect. When using participants' MRI and transformed them to MNI space (for example, using SPM), this allows checking the alignment between the MRI and the head model.

It is also possible to compute extract 3-D meshes from your participants' MRI and use them to create head models as described in this [Fieldtrip tutorial](http://www.fieldtriptoolbox.org/workshop/baci2017/forwardproblem/). If you have a custom head model, use the dropdown menu *Custom model files from other template or individual subject* in the head model settings. A custom head model for MEG is also possible and described in the next section of the tutorial.
It is also possible to compute extract 3-D meshes from your participants' MRI and use them to create head models as described in this [Fieldtrip tutorial](http://www.fieldtriptoolbox.org/workshop/baci2017/forwardproblem/). If you have a custom head model, use the dropdown menu *Custom model files from other template or individual subject* in the head model settings. A custom head model for MEG is also possible and described in the next section of the tutorial.