CHAPTER FIVE
Test preparation
56
Test preparation
5.4.2
Placement (montage)
Electrodes are placed at three sites: the high forehead, the nape of the
neck, and a reference (common) electrode on either the shoulder or cheek.
In all locations avoid hair when possible. When using wet gel electrodes
the sticky area around the central gel should be pressed to the skin – not
the central area itself.
Shoulder
(common black)
and nape of neck
(negative white)
High forehead
(positive red)
The sensor should be placed high on the forehead near the hairline and in
the centre (not offset to the left or to the right). Prepare the skin and, whilst
holding the skin taut, apply the sensor.
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