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What is the canthomeatal line?

The canthomeatal line is also referred to as the orbitomeatal line and is defined as running from the lowermost point of the eye's bony orbit to the preauricular point. In the image below the canthomeatal line is indicated by the red dashed line: 

 

skull landmarks sm 20121011 copy

 

In 10-20 EEG placement, electrodes (typically 19-21 electrodes) all are placed above the cantomeatal line.  

In contrast, high density EEG (128 - 256 electrodes) covers area on the scalp well below the canthomeatal line as shown in the image below:

                                    Screen Shot 2017 04 19 at 3.55.10 PM

A recent study from the University of Geneva shows this to be important for capturing activity originating from lower brain regions. 

 


Additional Info

  • Product Type: Geodesic Sensor Nets
  • Information Type: Implementation Theory
Last modified on Monday, 24 September 2018 20:38

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