Echopraxia

For example, a tic is an automatic form of echopraxia, involving to some slight degree the emotions and the volition and having been originally acquired by suggestion and imitation.

1964, Digest of Neurology and Psychiatry, Volumes 32-33, Institute of Living, page 260, Echolalia and echopraxia have been recognized as symptoms of seriously disturbed behavior in adults for over a century.

Several patients, after repeated experience of echopraxia and pantomime, had the delusion that they could communicate with others without using words—merely transmitting ideas by a bodily movement.