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ex-Member
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Join Date: Sep 2006
Posts: 110
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ex-Member
Join Date: Sep 2006
Posts: 110
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Quote:
Originally Posted by reverett123
.....treat categorical statements without sources as mere opinion. Like tailfeathers, everyone has them.
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As has now been acknowledged, it was commonly known that dopaminergic neurons do not reproduce in adults. It is up the opposers to prove that is now wrong if they claim it to be.
There have been claims here that dopaminergic neurons reproduce in adults. Yet there has not been any evidence at all in support of that.
All we have so far seen is :
(1) evidence of cell reproduction in neurons - but there are dozens of neural cell types besides the dopaminergic neurons, the vast majority of which have long been known to reproduce.
(2) evidence of cell reproduction in certain parts of the brain - but different parts of the brain contain numerous cell types. There is no part of the brain, including the substantia nigra, that contain solely dopaminergic neurons. So cell reproduction in certain parts of the brain is no evidence that dopminerhic neurons have reproduced.
(3) there have also been references provided previously that do not even do either of the above. They instead merely speculate as to whether dopaminergic neurons reproduce in adults, or claim it but provide no evidence in support of it, and there have been others that do not even do any of these.
Scientific evidence has to be carefully and sceptically scrutinised. Unfortunately, it is almost the norm that published research contains : false claims, abstracts that don't match the results, misinterpreted and exaggerated results, facts that are true but to nothing like the extent that is claimed.
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