MyoclonusSyndromeEpilepsies, MyoclonicMyoclonic Epilepsies, ProgressiveLafora DiseaseUnverricht-Lundborg SyndromeCystatin BClonazepamReflex, AbnormalMERRF SyndromeMyoclonic Cerebellar DyssynergiaEvoked Potentials, SomatosensoryDown SyndromeProtein Tyrosine Phosphatases, Non-ReceptorMetabolic Syndrome XLisurideMuscle RigidityElectroencephalographyElectromyographyCerebellar AtaxiaAtaxiaNephrotic SyndromeSjogren's SyndromeEpilepsy, Tonic-Clonic