Monday, February 01, 2021

Do quantum effects play a role in consciousness and more?

Very recommendable, but a long overview article! Lot's of amazing stuff! This great article touches upon a number of very interesting subjects!

"... hey found that increasing intelligence was associated with a shift in the biophoton’s frequency towards the red end of the spectrum ...
the role of biophotons – spontaneous ultra-weak near-ultraviolet to near-infrared photons in biological systems – is a growing field of research in neurobiology. ...
Just how light is involved in the signalling processes that constitute the central nervous system and its emergent property, consciousness, is still not clear. ...
the first detailed theory of quantum consciousness emerged in the 1990s from the ... Roger Penrose and ... Stuart Hameroff ... Their “orchestrated objective reduction” (Orch OR) theory has undergone a number of revisions since its inception ..., but generally it posits that quantum computations in cellular structures known as microtubules have an effect on the firing of neurons and, by extension, consciousness. ...
The application of quantum theory in a biological context has had most success with regards to photosynthesis but research on the avian compass, olfaction, enzymes and even DNA also suggest that quantum effects might be implicated more generally in the functioning of biological organisms. ...
The mitochondria use electron transport chains and proton gradients to create adenosine triphosphate (ATP), which powers biological processes. They are also the proposed primary site of biophoton production. ...
that chemicals with anaesthetic capabilities have chemical and structural properties that are very different from each other, ... on the similar physics that these substances might share. Anaesthetics can bind to various cytoplasmic and membrane proteins. ... anaesthetics facilitate electron currents in these proteins and that this might be demonstrated by looking at changes in quantum spin ...  that under the influence of xenon, the simplest of all the anaesthetics, fruit flies showed an increase in electron spin as measured through the use of electron spin resonance (though the origin of the signal is still debatable). ...
What is new is the progress made in understanding how quantum effects might contribute to electronic transfer processes in biological systems. In photosynthesis, there is some evidence that the movement of energy through the structures that constitute the photosynthetic network exploits quantum effects such as coherence ... Specifically, the structures that seem to allow this coherent transfer are chromophores ... Research suggests that instead of moving between the discrete energy levels of an arrangement of chromophores, energy can be spread out or delocalized across more than one chromophore at a time. ...
What is interesting in the context of quantum consciousness is that nerve cells contain structures such as microtubules and mitochondria that might support coherent energy transfer in a manner similar to that in photosynthesis. Microtubules ... provide shape and structure, and are instrumental in cell division as well as the movement of motor proteins. They are made up of polymers of tubulin proteins and within these are chromophores similar to those found in photosynthetic networks. Chromophores are also found in mitochondria, the power stations of the cell. This had led some researchers to suggest that anaesthetics work by disrupting coherent energy processes and in turn disrupting consciousness. ...
Until very recently there was no strong evidence that humans had a magnetic sense. However, a new experiment ... shows, incredibly, that starved humans can sense the geomagnetic field to orient themselves towards the remembered location of food, an orientation that appears to be blue-light dependent ...
It has also been shown ... that changes to the strength of Earth’s magnetic field cause changes in alpha brain waves – oscillations in the neural activity of the brain in the frequency range 8–12 Hz – in human subjects ...
In separate studies, changes in alpha waves have been associated with fluctuations in the production of biophotons, measured indirectly by fluctuations in reactive oxygen species, which play a role in cellular communication but are also responsible for numerous bodily problems. They are implicated in ageing, disease and depression and are the reason that antioxidants are so widely touted as being beneficial to health. What is interesting is that studies have shown how magnetic field mediated changes in the spin dynamics of the radical pair mechanism lead to increased reactive oxygen species. ...
Spin dynamics, the behaviour of quantum particles in a magnetic field, is also at the heart of another theory that suggests that quantum effects play a role in cognition. In this case, however, the spins in question belong to nuclei rather than electrons. Nuclei can have particularly long coherence lifetimes, meaning that their quantum effects persist over timescales long enough to play a role in neural firing and even, possibly, the function of memory. ...
that spin-entangled molecules known as Posner molecules might lead to nerves firing in a correlated fashion. ... that the spins of the phosphorus nuclei are entangled and that, furthermore, if this quantum entanglement can somehow be isolated from other quantum interactions it might last long enough to have an effect on cognition processes ...
Entangled Posner molecules are then taken up into neurons, bind and release calcium ions, triggering entangled neural activation. ... why lithium is successful in treating bipolar disorder. Should lithium replace the central calcium ion in a Posner molecule then the non-zero spin of the lithium ion could contribute to decoherence and have a knock-on effect on neural activation. ...
lithium is that different isotopes have been shown to have differing effects on the mothering behaviour of rats. A similar phenomenon has recently been recorded in the action of xenon, an anaesthetic. ... found that differing isotopes of xenon cause differing levels of unconsciousness ...
In another recent study, quantum dots ... were successfully used to undo the protein clumping linked to Parkinson’s and Alzheimer’s disease ... declining eyesight has been shown to improve through the amelioration of mitochondrial damage by red light treatment. ... Photobiomodulation, the application of red or near-infrared laser light, has also shown promise in treating various brain disorders, as well as improving attention, memory and learning ..."

Do quantum effects play a role in consciousness? – Physics World The role of biophotons in the brain is a growing area of research in neurobiology – and where there are photons there might be quantum mechanics. 

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