The only exception to this sequence was the unusual case of a hanging without decerebrate and decorticate rigidities [ 18 ]. A 52-year-old man hanged himself by completely suspending himself from a ring in the ceiling. When he stepped off the stool, the movement of the body stepping off the stool created a rotary movement around the ceiling's ring, and the body started to revolve around the ring. Apart from the rolling around the ceiling's ring, the body stayed motionless for the duration of the movie, and no decerebrate or decorticate rigidity was observed. It was suggested that the lack of usual motor responses in this particular case might have been caused by the vestibular stimulation of the rotary movement. It is well known that the decerebrate and decorticate postural reflexes are triggered by three types of afferent sensory information: muscle proprioceptors (sense changes of length or tension in muscles), vestibular receptors (detect head motion), and visual inputs (sense movement in the visual field). The vestibular system plays a particularly important role in the postural attitude of decerebrate and decorticate rigidities. In animal models, cutting the vestibular nerves or destroying the labyrinths abolishes the input from the vestibular system and reduces decerebrate rigidity. Stimulating the anterior lobe of the cerebellum also reduces decerebrate rigidity. In this exceptional case of hanging without decerebrate and decorticate rigidity, the revolving movement of the body is hypothesized to have interfered with the development of the postural attitude.