Organisms respond to quantum information

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SUMMARY

The discussion centers on the sensitivity of biological systems to phase information in light, as highlighted by Prokhorenko's findings. It reveals that quantum effects, particularly wave-particle duality, can influence molecular rearrangements, such as retinal isomerization in bacteriorhodopsin, enhancing efficiency by up to 20%. This raises questions about whether organisms, including humans, utilize phase information in vision. The implications suggest a potential link between bacterial processes and human visual mechanisms, warranting further investigation.

PREREQUISITES
  • Quantum mechanics principles, particularly wave-particle duality
  • Understanding of photochemical reactions and molecular rearrangements
  • Knowledge of bacteriorhodopsin and its role in vision
  • Familiarity with the concept of phase information in light
NEXT STEPS
  • Research the role of phase information in photochemical reactions
  • Explore the mechanisms of retinal isomerization in bacteriorhodopsin
  • Investigate the similarities between bacteriorhodopsin and human opsin molecules
  • Examine current studies on quantum effects in biological systems
USEFUL FOR

Researchers in quantum biology, biophysicists, and anyone interested in the intersection of quantum mechanics and biological processes, particularly in vision science.

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“We’ve known for a long time that biological systems are sensitive to light but not necessarily that they are sensitive to the phase information that may or may not be present in light,” explains Prokhorenko. “This finding opens up how we perceive biological systems and raises new questions such as, have biological systems designed themselves to be sensitive to phase information? What other roles do quantum effects play in nature?”
http://www.physorg.com/news76773461.html

And:

Because of the wave-particle duality inherent in quantum mechanics, different states along the pathway of a molecular rearrangement can interfere with each other like vibrations on a string. The phases and amplitudes of spectral components in light pulses that initiate photochemical reactions can now be created that can steer small molecules along distinct reaction trajectories by inducing constructive or destructive wave interference among states. Prokhorenko et al. show that this approach can modulate the efficiency of retinal isomerization in the protein bacteriorhodopsin (a rearrangement closely related to the vision response) by as much as 20% in either direction. The extent of modulation is remarkable in light of the many degrees of freedom in the protein environment that might be expected to randomize the wave phases
http://www.sciencemag.org/cgi/content/summary/313/5791/1197b

So they have used phase information to control a biological process, but how about the organisms themselves: do they use light in the same way?

They also mention 'the vision response', is that our eyes? Do our eyes/brain use phase information to create our vision?
 
Last edited:
Biology news on Phys.org
The bactrhodopsin molecule they mention is bacterial, but it is apparently a chemical relative of the opsin molecules that mediate our vision in our retinas. So they are suggesting that if bacteria can do it, maybe our eyes can do it, or be made to do it, too. Obviously that will be a subject of further research.
 

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