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robertoostenveld committed Jan 30, 2023
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6 changes: 3 additions & 3 deletions template/electrode.md
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Expand Up @@ -30,7 +30,7 @@ You can use the following snippet of code to get a quick overview of the templat
You can find the template 3-D electrode sets included in FieldTrip [here](https://github.com/fieldtrip/fieldtrip/tree/master/template/electrode).
{% include markup/end %}

### The 10-20, 10-10 and 10-5 system for electrode placement
## The 10-20, 10-10 and 10-5 system for electrode placement

The following template electrode sets describe the 10-20 EEG electrodes and were constructed by Robert Oostenveld as part of the study described in _Robert Oostenveld and Peter Praamstra. **The five percent electrode system for high-resolution EEG and ERP measurements.** Clin Neurophysiol. 2001 Apr;112(4):713-9._ More details on the electrode positioning and the different naming schemes can be found in the paper (link to [pubmed](http://www.ncbi.nlm.nih.gov/pubmed/11275545), [sciencedirect](http://www.sciencedirect.com/science/article/pii/S1388245700005277)) and on Robert's [personal blog](http://robertoostenveld.nl/?p=5).

Expand All @@ -43,7 +43,7 @@ The electrodes are stored in an ASA `.elc` file which can be read with **[ft_rea
- standard_prefixed.elc
- standard_primed.elc

### The EGI geodesic sensor net
## The EGI geodesic sensor net

The following template electrode sets are for the [EGI](http://www.egi.com) geodesic sensor net and were downloaded from the EGI [FTP server](ftp://www.egi.com/).

Expand All @@ -55,7 +55,7 @@ The following template electrode sets are for the [EGI](http://www.egi.com) geod
- GSN-HydroCel-64_1.0.sfp
- GSN-HydroCel-65_1.0.sfp

### Easycap electrode arrangements
## Easycap electrode arrangements

The following template electrode sets are for the [Easycap](http://www.easycap.de/easycap/e/products/products.htm) electrode arrangements and were downloaded from the Easycap [download page](http://www.easycap.de/easycap/e/downloads/electrode_sites_coordinates.htm).

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5 changes: 2 additions & 3 deletions tutorial/headmodel_eeg_bem.md
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Expand Up @@ -375,9 +375,8 @@ The head model is expressed in the same units and coordinates as the anatomical
We cannot see what the origin of the coordinate system is aligned to. It is definitely _not_ interauricular, as none of the axes passes (approximately) through the ears. By answering the questions, we can establish that the electrodes are in a RAS coordinate system with the first positive x axis pointing to Right, the second positive y axis to Anterior and the third positive z axis to Superior.

{% include markup/success %}



The specific template electrode set that we are using here is in fact coregistered with the MNI coordinate system. It is documented in more detail [here](/template/electrode/) and the corresponding template BEM headmodel is documented [here](/template/headmodel/#standard_bemmat).
{% include markup/end %}

#### Manual alignment of the template electrodes

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