zoobyshoe
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The briefest seizure lasts just a split second. The longest recorded seizure I've ever read about lasted something over 18 years.PIT2 said:1. I have also read some accounts of people that walk around with these experiences for long periods(hours/days/months). How long do seizures generally last?
Anyone who has epilepsy (recurring seizures) is at risk of going into a seizure that won't stop without medical intervention. A condition of constant seizing like this is called status epilepticus. It is not rare.
You misunderstood. In epilepsy an "aura" is the simple partial seizure that preceeds a more serious seizure. During the "aura" the person is fully conscious and aware of their surroundings, although they will be having some peculiar experience or another depending on where the seizure focus is in their brain. When the seizure progresses, their consciousness becomes clouded, or they may be completely unconscious, and they won't remember anything afterward except the aura.2. Also, what are the actual symptoms of seizures? Surely, hallucinations alone are not the only symptom (the case which u described (Dostoevsky) for instance, also saw an aura).
The most common simple partial seizure symptoms are:
Intense fear or dread
Deja Vu (everything seems superfamiliar)
Jamais vu (familiar things seem strange and foreign)
Peculiar sensations in the stomach
Micropsia (things look smaller and farther away than they should)
Macropsia (things look bigger and closer than they should)
Less common are:
Uncontrolable crying
uncontrolable laughing
uncontrolable rage
feelings of euphoria
feelings of ecstasy
There are many more different ones having to do with the illusion of physical sensations, and also with autonomic symptoms, like profuse sweating, irregular heartbeat etc.
According to one survey, nearly 100% of the population reported having at least one simple partial seizure symptom. At least 1/3 of the people I know have had a deja vu at least once.3. Also, many people who experience these things without meditation, only experience them once. Is there some kind of disease that causes once-in-a-lifetime seizures?
You don't need a disease to have a seizure. Seizures can result from temporary screw-ups in your hormones and/or brain chemistry due to bad diet, say, coupled with lack of sleep and stress.
This question sounds sarcastic.4. And finally, these kind of experiences can be life-changing events for the experiencer. Do seizures cause permanent braindamage?
Anyway, yes, seizures can cause brain damage, in severe cases. If you go into status with a grand mal seizure you can die.
What is more to the point is that all seizures permanently change the responsiveness of neurons from normal to "touchy". Each seizure a person has makes it easier for the next seizure to occur. Once a neuron gets entrained into a seizure it "learns" to seize and has a lower seizure threshold: it will take somewhat less of a stimulus to set it off the next time.