Not sure it's clear that most people don't think that. There has been a lot of articles on quantum effects in the human brain lately. e.g., http://goo.gl/Ff0elU

Those theories (also in your link) have only one source: Roger Penrose.

If you open any Neuroscience textbook, there will be no mentions of quantum phenomena as related to consciousness.

I was referring to the "recent discovery of quantum vibrations in microtubules inside brain neurons" which is a fact independent of any particular theory or interpretation thereof.