Oculopalatal Myoclonus
Oculopalatal Myoclonus Definition
- Oculopalatal myoclonus is a segmental myoclonus with continuous, pendular oscillations most commonly in the vertical plane. Rhythmic movement of the platysma muscle in conjunction with the palate. It is distinguished from pendular nystagmus because of the presence of myoclonus of non-ocular structures, such as the palate.
Oculopalatal Myoclonus Pathophysiology
- In the clinical syndrome of oculopalatal myoclonus, hypertrophy of the inferior olivary nucleus exists in association with dysfunction of the dentato-rubro-olivary pathway (Guillain Mollaret triangle). Hypertrophy of the inferior olivary nucleus exists in association with dysfunction of the dentato-rubro-olivary pathway (Guillain Mollaret triangle).