--to my knowledge, these nerve conduction tests are supposed to be done in a cool environment, not very warm, as first, sweat may interfere with some of the conductivity readings, and second, increased body temeprature is generally the enemy of good nerve conduction, as the MS people wearing their cooling vests and trying very hard to avoid fever-sparked exacerbations will tell you.

Were they perhaps trying to see what readings would be obtained in a non-optimal environment?