MR RAUTENBACH
It seems to me from what you say that the measure of how the person feels uncomfortable, discomfort, is in correlation with how long you turn the sling, so that you could have the following situation:  a person doesn't want to give information, the electrodes are placed on his body, the sling is turned, he's in discomfort, it's visible, and you ask him, "Where's the information, I want the information?", and the person says no, he's not prepared to give the information, and then there's a strong possibility that the next time you would turn the sling even longer, so that the discomfort increases?