Final answer:
A galvanometer is the device that records the changes in the electrical resistance of the skin associated with sweating, similar to a lie detector machine.
Step-by-step explanation:
A galvanometer is the device that records the changes in the electrical resistance of the skin associated with sweating, similar to a lie detector machine. Galvanometers are analog meters that have a needle that swivels to point at numbers on a scale, and they are commonly used in physics to measure current flow. When current flows through a galvanometer, it produces a proportional needle deflection.