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I think this tumour thing is just one of many examples of brain abnormalities / damage giving rise to unusual / aberant mental behaviour.
When I was studying the philosophy of mind I read a couple of psychology books which had a number of great examples of brain damage resulting in peculiar behaviour. A large number came up in the war from shell fragments that didn't kill but couldn't be removed, resulting in (from memory, so could be inaccurate):
(i) a man who went from being a wizzard at billiards, to unable to figure out the angles and could hardly play at all;
(ii) a number of people who could no longer remember certain things / words / events, or recognise certain objects (see, also, "The Man who Mistook His Wife for a Hat" by Oliver Sacks - not actually on brain damage, but related points).
My favourite was an example given in a Daniel Dennet essay "Brain bisection and the duality of mind". The brain is in two hemispheres, left and right, and the connective tissue between them (the corpus calloseum, if I remember the term correctly) used to be removed sometimes in an attempt to cure epilepsy. No help with epilepsy but produced some bizarre results. Everyone knows the left side of the body generally connects to the right side of the brain, but did you know the speech centre is generally in the right side of the brain? When these people had their left eyes covered up and were shown something they could not say what it was, because the message was not getting to the speech centre. Women were less affected (more generalised brain functions I believe) and over time the effect wore off - presumably as the brain developed alternative connections to compensate. Probably off topic, but pretty cool anyway.
Back to paedophilia and tumors: -
As a lawyer I have regularly seen massive evidence of personality change from brain damage. In my experience it usually results in loss of impulse control / increased agression / sudden changes in tastes (alcoholism often comes up too) / changes in libido (both up and down). I suspect I only see the bad sorts of personality change - people don't tend to sue if they change for the better. However, I have no doubt that this tumour is simply one example of many cases of sexual urges changing as a result of changes to the brain, although I must admit I have never come across a shift to paedophilia. |
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