Bit of both
when I had a psychotic episode in hospital ( I was in hospital first ) they insisted on describing/discussing the content of my hallucinations because they were based on my experiences
I said: if you stop the morphine infusion I will stop thinking I am dead...
[ Full of book of the Dead and Osiris, and as you know I have worked on an Egyptian arccheological site....Oh and I also had snakes crawling over me crossed with the baldacchino in St Peter's Rome which looks like columns with snakes crawling up ]
and they said yeah we have done that - but we still have to discuss what you were thinking and feeling -and I said 'why, this is a complete waste of time - they are well - you know hallucinations....
and they said no it isnt actually and anyway you are the maddest post surgical patient we have ever seen, and the end results are much better if you see someone now ( and it is true - I can talk about it without difficulty )
and here we are fifteen years later, where I can tell you where hallucinations come from....
and for further operations I have been careful to hold onto my marbles - - ( and take less morphine )