When falling asleep, the spasm, jerk that you feel accompanied by a falling sensation is a myoclonic jerk
. Very normal.
"This term denotes a common experience with sudden contractions of the
big body muscles while falling asleep. This mostly causes a feeling of
stumbling, falling or similar and subsequently waking up again. The
exact cause is not known, it probably is some disturbance in the
brain's functions in the first stage of sleep. Surely it is common,
and does not cause serious problems unless it stops you from sleeping
(but then you have general sleeping problems as well)...."
This was taken from
But the feeling of your brain "dying" sounds like "spells of some sort, so see a doctor.
Sometimes called a spell Petit Mal seizure ( but usually, the person doesnt realize it happened":
"A petit mal seizure is a temporary disturbance of brain function caused by abnormal electrical activity in the brain and characterized by abrupt,
short-term lack of conscious activity ("absence") or other abnormal change in behavior.
Petit mal seizures occur most commonly in people under age 20, usually in children ages 6 to 12. They may occur in combination with other types of
Typical petit mal seizures last only a few seconds, with full recovery occurring rapidly and no lingering confusion. Such seizures usually manifest
themselves as staring episodes or "absence spells" during which the child's activity or speech ceases.
The child may stop talking in mid-sentence or cease walking. One to several seconds later, speech or activity resume. If standing or walking, a child
seldom falls during one of these episodes.
"Spells" can be infrequent or very frequent, occurring many times per hour. Up to hundreds of seizures can occur in a single day. They may occur for
weeks to months before they are noticed. They can interfere with school function and learning. Teachers may interpret these seizures as lack of
attention or other misbehavior.
Atypical petit mal seizures begin slower, last longer, and may have more noticeable muscle activity than typical petit mal seizures...."
This quote was taken from Medline plus Medical Encyclopedia:
Im not saying you are having seizures, but you are aware of something that may not be right, so talk to a profesional please.
[edit on 19-6-2005 by xxKrisxx]