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Does a clonic-tonic seizure also cause this type of injury?

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A severe seizure may involve hypoxia if prolonged. And prolonged hyperexcitation can release glutamate and calcium at levels which can cause injury.

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Thank you. Is 1-2 minutes considered prolonged? I'm asking in regards to the practice of electric shock treatments, which is still a common procedure throughout the US. It's a horrible topic to talk about.

A one-to-two minute clonic-tonic seizure is induced three times a week until they have done either eight or ten seizures, depending on the judgement of the psychiatrist.

To me, it seems like that would be enough to cause the damage you write about here, but I don't know if 1-2 minutes (8 to 20 minutes total over three weeks) is considered minor. People do have memory loss afterwards, so something bad must be happening.

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Electric shock treatments will knock out synaptic connections. Disrupting memory storage. There is neuroplasticity throughout lifetime including adulthood. This includes new neural cell generation from stem cells. I don't think 2 minutes is prolonged enough to do much damage. Also, current protocols use anesthesia which should damp down any hyperexcitation cortical spread.

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