Jerk-locked premyoclonus spikes
HP:0001351
UMLS:C3552825
Jerk-locked averaging (JLA) is used to record the timing and distribution of brain activity preceding brisk involuntary movements such as those observed in patients with myoclonus. JLA is capable of revealing a premyoclonus spike in the absence of paroxysmal activity in the routine EEG.
Abnormality of central nervous system electrophysiology