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I am unconvinced that the incredible power of our brains has anything to do with macroscopic manifestations of quantum behavior. As far as I know, coherence within the brain has not been demonstrated in any way.
I have read a few books by the proponents of quantum consciousness, but as far as I can tell, the authors (psychologists and neurologists) are either misunderstanding quantum mechanics or misrepresenting it.
All of the matter we interact with is made up of subatomic particles that appear to behave according to the QM model. So, of course our brains can also be described as a vast collection of subatomic particles behaving in QM ways. But I don't see any significant way that our brains would differ from our livers on a subatomic level.
Arguments that consciousness interacts with wave-functions of systems under study are misguided. There isn't any need to have a conscious observer to "collapse" a superposition. Interactions with inanimate objects, particles, etc. is enough to decohere systems (even if no measurement is made!)
I also don't see any need to invoke fantastical QM phenomena to explain the fantastic power of our brains. The complexity of the system is already built in to the neurons and synapses. Of course, I would love to stand corrected, if there is actually any evidence of large-scale quantum phenomena in brains.
This study demonstrated evidences of quantum coherence in microtubules:http://www.sciencedirect.com/science/article/pii/0378475496804769 [Links inactive - To make links active and clickable, login or click here to register]
This is a cool paper, but it does not demonstrate any evidence of coherence in microtubules. It predicts coherence, suggests how it might arise, and theorizes on how it might influence brain function. However, there are no experimental data--only theoretical work. This paper is also 20 years old, and has not been validated yet... A more recent review article by the same authors: http://www.sciencedirect.com/science/article/pii/S1571064513001188 [Links inactive - To make links active and clickable, login or click here to register] summarises the state of the subject (as it was in 2014).