yes it also causes such movements but i think so you should consult your doctor again .Myoclonic seizures are brief, shock-like jerks of a muscle or a group of muscles. Myo means muscle and clonus means rapidly alternating contraction and relaxation—jerking or twitching—of a muscle. A jerk is an involuntary myoclonic twitch which occurs just as the subject is beginning to fall asleep. Physically, resemble the jump made when a person is startled. Jerks are usually felt once or twice per night. When a subject is deprived of sleep and is trying to fight sleep, jerks can occur more often. This normally happens to subjects who have deprived themselves of sleep for longer than 24 hours, or to those who have recently awakened after insufficient sleep. You have to go for an EEG and corelate your symptoms. Some episodes of myoclonus are normal. Some myoclonic seizures occur in reflex epilepsies. I think your case nothing much to worry as neurologist thinks it is mild. Take care!