Electrodermal Activity (EDA)
User Manual
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2.
Application Notes
The
BITalino
EDA sensor is designed to acquire the change of skin activity such as sweat with two
measuring electrodes. One example is the placement of the electrodes on the anterior side of the hand
on
two adjacent fingers
of interest (see Fig. 4). The electrodes are then connected to the sensor cable
of the EDA sensor.
2.1.
Electrode Placement/Sensor Placement
Figure 4: Example EDA placement I on the index and middle finger.
Possible electrode positions are listed in Table 1. The positive and the negative measuring electrodes
can be positioned in either way.
Table 3: EDA electrode positioning.
Positive Electrode (+)
(red sleeve)
Negative Electrode (-)
(black sleeve)
I
Finger location 1
Finger location 2
II
Finger location 2
Finger location 1
An example signal acquisition with the assembled version on the inside of the hand on two different
locations is illustrated in Figure5.
Figure 5: Example electrode placement of the assembled version on the anterior side of the hand on the index and middle
finger (left) and below the thumb (right).
