demarcation current

cur·rent of in·ju·ry

the current generated when an injured part of a nerve, muscle, or other excitable tissue is connected through a conductor with the uninjured region; the injured tissue is negative to the uninjured.
Synonym(s): demarcation current

demarcation current

Etymology: L, de + marcare, to mark
an electrical current that flows from an uninjured to an injured end of a muscle. Also called current of injury.