Hi there. These sound the same as what I get! Mine also have been diagnosed as myclonic jerks. The way i would describe it is just as i'm going to sleep, just at the point where i would say i'm going from conscious to semi concious. I feel like my whole body has stopped, my heart, my breathing everything. Then it feels like some one puts those paddles on me that they use to restart your heart n shock me. I wake up with a gasp! I seem to go through phases of getting them, i haven't had any for a while thankgoodness. but when i did, sometimes it would be one a night, others, maybe as many as ten in a row! As you ave all posted, they are VERY frightening.