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Thought Provoker



Posts: 530
Joined: April 2007

(Permalink) Posted: Sep. 23 2007,13:55   

Hi JAM,

Thank you for the opportunity for me to expand my understanding of Penrose-Hameroff Orch OR.

You wrote...
 
Quote
What Penrose omits is the fact that the evidence supporting the involvement of the ACTIN cytoskeleton is an order of magnitude greater than the evidence supporting the involvement of the MICROTUBULE cytoskeleton.


Dr. Hameroff provides an explanation for how the ACTIN in needed to support quantum isolation in microtubules.

I would be very interested in seeing a hypothesis on how actin can be a SOURCE of consciousness.


To the quote "In cat visual cortex, MAP-2 is dephosphorylated when visual stimulation occurs (Aoki and Siekevitz, 1985)."

You responded with...
 
Quote
Is that a cause or an effect, TP? Is this provoking any thought in your head?


The time order of cause and effects gets very interesting when dealing with quantum mechanics.  Retrocausality is practically a given.

Libet's observation of the readiness potential for conscious actions brings provides support in considering consciousness is a retrocausual superposition of quantum states.

If you are not familiar with Libet, his experiments show a half a second time period of electrical brain activity prior to a conscious decision being made.

Libet's experiments have caused a stir in the study of consciousness.  Playing professional tennis and hitting a fastball should be a physical impossibility.  One answer is that we are helpless observers watching our bodies perform while deluding ourselves with false memories.

Another is that consciousness is a result of orchestrated quantum effects interconnected in both space and time.

Dealing with time as just another dimension is a given in the study of General Relativity.

The EPR paradox has demonstrated "spooky action at a distance" for seventy years in quantum experiment after experiment.

Putting them together with the study of consciousness provides a lot of explanatory power for scientific observations like Libet's.

As to direct experimental results...  I recently found this...  
Quote
“In recent times the interest for quantum models of brain activity has rapidly grown. The Penrose-Hameroff model assumes that microtubules inside neurons are responsible for quantum computation inside brain. Several experiments seem to indicate that EPR-like correlations are possible at the biological level. In the past year , a very intensive experimental work about this subject has been done at DiBit Labs in Milan, Italy by our research group. Our experimental set-up is made by two separated and completely shielded basins where two parts of a common human DNA neuronal culture are monitored by EEG. Our main experimental result is that, under stimulation of one culture by means of a 630 nm laser beam at 300 ms, the cross-correlation between the two cultures grows up at maximum levels. Despite at this level of understanding it is impossible to tell if the origin of this non-locality is a genuine quantum effect, our experimental data seem to strongly suggest that biological systems present non-local properties not explainable by classical models."
(emphasis mine)
Nonlocal correlations between separated neural networks

BTW, the term "nonlocal" is a direct reference to "spooky action at a distance" of the EPR Paradox

  
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