An electrical recording technique, involving a neutral and an exploring electrode, was employed to study the characteristics of muscular activity induced in remote parts by the movement of a hand or foot. Although the effects were sometimes masked, evidence of activity was usually observed to occur in each of the other limbs when a member was moved. The magnitude of the activity was inversely related to the longitudinal distance existing between the moved part and the remote region tested. Of two longitudinally remote members, the contralateral evinced greater activity than the ipsilateral. The courses of development and decline of action potentials in primary and in remote locations during voluntary action exhibited temporal agreement (no time lag). (PsycINFO Database Record (c) 2006 APA, all rights reserved)