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Brain trauma is inherently more localized than drugs, so expecting a 1:1 mapping is hardly reasonable.

However, fever lack of sleep and other non localized effects can produce a wide range of Hallucinations.

I agree that fever and lack of sleep can produce hallucinations, but I'm not convinced that they are non-localized effects in the brain, nor that psychedelic chemicals are non-localized in the brain.

How do you think the temperature increase from Fever could be localized? It's just a temperature increase and you can induce the same effects by preventing the body from cooling down effectively.

I meant the effects of fever, so that perhaps different parts of the brain was affected differently by the temperature increase. I really have no idea, but I was saying that it is not an obvious fact either way.

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