When we make a head movement, for example turn your head to the right, there is contraction of the muscles that rotate the cervical spine to the right and relaxation of muscles that rotate the cervical spine to the left. These muscle actions are directed by a voluntary two systems and the other involuntary.This movement of the head space is immediately detected by the vestibular system (located in the middle ear) which immediately informs:• the motor muscles of the eye to maintain a stable ...