The 'movement' was simultaneously emotional and motoric, and essentially autonomous (thus distinguishing it from passive jerkings and other pathology).
(music,of a rhythm) Based on repetition of a single note length.
2007 May 18, Jon Pareles, “A Tenderhearted Introvert, Crooning in Eclectic Company”, in New York Times:
In between were the Bang on a Can All-Stars, a contemporary chamber-music group, playing the part of their repertory — drum-driven, motoric, yet by no means primitive — closest to rock.