PROPRIOSPINAL MYOCLONUS UPON RELAXATION AND DROWSINESS

Propriospinal myoclonus is a subtype of spinal myoclonus characterized by axial flexion or extension jerks, arythmic and prolonged muscle bu rsts with a pattern of activation consistent with a slow conduction wi thin the propriospinal pathways. We describe a new idiopathic case of flexion propriospinal myoclonus occurring upon relaxation and drowsine ss. This syndrome is to be added to the spectrum of movement disorders occurring during drowsiness.