These are screenshots from the AudiologyOnline webinar about Nucleus 8:
As you can see, SCAN2 changes between directionality patterns (drawn in different colors) depending on the environment.
EDIT:
Analyze the notches: null points have little to no sound reception.
These are:
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Blue - 1 null point at 180° (perfectly behind your back) but quite much sound reception not only from the front, but also from both sides
-
Red - 2 null points at 120° & 240° and some sound reception behind back
-
Green - 2 null points at 90° & 270° (perfectly on both sides) - most precise to get sound from the front at the expense of also hearing sound from back
END OF THE EDIT
This was a very useful slide. After that, I have gained a better understanding and motivation to use that feature.
It is a pity that in general in the materials available to patients there is little such specific information on this technicalities.