Focal-onset motor seizures may be further classified by type of seizure: Automatisms (coordinated, purposeless, repetitive motor activity) Atonic (focal loss of muscle tone) Clonic (focal rhythmic jerking) Epileptic spasms (focal flexion or extension of arms and flexion of trunk) Hyperkinetic (causing pedaling or thrashing) Myoclonic (irregular, brief focal jerking) Tonic (sustained focal stiffening of one limb or one side of the body) Awareness level is usually not specified for atonic seizures or epileptic spasms.