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View Full Version : Dr Oliver Sacks - Visualization & specialized structures in the brain



sigma6
27th February 2013, 05:44
This is a materialist type interpretation, which we can't deny still operates as a critical factor, regardless how ephemeral physical reality may be, it is, as Einstein said, [perniciously] "persistent" So much so, we can create an entire Newtonian physics to explain it. So let's not 'poo poo' Newtonian physics altogether (lol)

Sometimes I am so focused on things transcendent I actually have to remind myself to still deal with the physicality or 'machinery' of what we are made of... and there are many subtle intricate interactions... Dr Sacks speaks of differences between psychotic hallucinations which are "interactive" and to the physical 'machinery of mind' parts of the brain, which can sometimes simply not function with rather unique results.

For example under some circumstances, when it comes to the brain's ability to process visual information, it can create visual experiences as a "non-interactive movie" operating 'independently' of the observer. (how scary would that be...) His research is very profound, and he speaks from a very personal and passionate insight.

Had a flash: I couldn't help but think of Michael Talbot when he talked about how the eyes/mind has been found to process data according to "Fourier Equations" (http://en.wikipedia.org/wiki/Fraunhofer_diffraction_(mathematics)) used to mathematically express holographs (3D imagery) ... Now I thought about why this would be and came to the conclusion that it would be 'necessary' that the mind would process data in such a manner because that would be a requirement of what the mind is trying to achieve. That is, when we "visualize" what we see, it "appears" to be outside the head in a 3 dimensional space around us... now why is that? Well Michael hit it didn't he, because the mind realizes it is processing data, that pertains to what IS outside of us and around us and MUST NOW RECREATE THAT as accurately as possible with what it has, which is ultimately an upside down image of light photons impinging onto the back of the retina. This is, by definition, only 2 dimensional data in the strictest sense. It is the brain that recreates this pure raw data into an "external" 3D imagery. A kind of holographic effect in a sense. This is actually a more parsimonious interpretation of what Michael Talbot is saying but I think it is applicable here. And I think he would agree given the context of what Dr Sacks has researched.

This makes perfect sense when you think about it. The mind has unlimited processing capacity. The eyes gather 2 dimensional data, ALL other sense faculties are COMBINED with that data. We can physically walk over and "touch" the object, we can hit it and "hear" it make a noise. So we are aware there is a separate physical object out there. The mind doesn't ignore this data, but incorporates it with the physical 2 dimensional data. Of course the mind knows how to incorporate all available information to re-present this information as accurately as possible. So although the 'experience' is happening inside our brain just like feeling, taste and smell. It knows the the "final result" has to appear "outside" the body, otherwise it wouldn't be an accurate representation, consistent with all the available 5 sense data it is also processing. Thus why it is a holograph, a complex representation of external reality, but none the less, an illusion or "recreation" by definition. A necessary "illusion" since the brain exists in the pitch black encasement of the skull, never to directly see light. The eyes don't "think" they only collect data, their function is to immediately re-organized and pass that data to the brain as quickly as photons impinge on the retina... this could probably even be measured in fps (frames per second)

In any event, we know that the raw data of the eye is highly, highly processed by the brain before we actually "see" it, and things like "perspective" are "learned" or "interpreted" which is why we can be easily fooled with optical illusions that exemplify this interpretation (especially when there aren't other sensory inputs to provide more context to help us differentiate!). And thus it makes perfect sense that part of that processing would involve mathematics similar to holographs in order to create a "3D visual experience". As much as we take it for granted, it is created and optical experiments show how easily this "effect" can be 'disrupted'. Thus what the brain is creating is inside the body, somewhere between where the eyes pick up the visual light stimulus and the electrical activity in the back of the visual cortex.

We manage to "create" an image that "appears" OUTSIDE of our head... think about that... it appears as outside of our head but we know that the actual sensory datum, like our sense of touch, smell and taste experience has to be somewhere INSIDE our body, it only appears as 3 dimensional space outside of our head. (lol)
Thus our mind creates a holographic image as the most accurate representation of reality. But it is a creation of mind, an accurate recreation of external reality. The same with hearing. It is 'projected' into a 'perception' of external reality, electrical impulses accurately recreating actual physical energy, much like a TV and Speaker does (think 'surround sound' and '3D' effects)

The reason this all came to mind was because the idea of seeing 'independent movie type' hallucinations has a very valid explanation, which is what his research is based on. Just as when we take hallucinogenic drugs and it appears the drug is taking over the "machinery" of our mind and body and creating incredible optical experiences (among other things) So physical 'breakdown' of core components of brain function related to the visual cortex and other parts of the brain that create our "visual experience" could create illusions which appear as "projections" very similar to the classic "Princess Leia" scene (Help me Obi Wan...) because of how the mind works. The image would appear as equivalent to a 3D projection and appear OUTSIDE us. And the experience of people who suffer from this (they are aware what they are seeing is not real.) Is the evidence and proof. These are the most fascinating studies, when something like this dysfunctions in the brain, and reveal it's inner workings...

Dr Oliver Sacks: What Hallucination Reveals About How Our Minds Work
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sigma6
1st March 2013, 04:12
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"... Mother nature uses all kinds of mathematical languages... when we go to understand physical phenomena, we generally find that there is some kind of some kind of mathematical underpinning... there are uncountable mathematical languages. It turns out the mathematical language involved in the making of a hologram is a system of mathematics developed by a French man named "Fourier Transforms". What also turns out is that our brain uses "Fourier Transforms" to translate visual information. This is a very unusual state of affairs, it's kind of like finding Eskimos speaking Spanish... "

Now that is where he 'lost me' I did find that analogy a bit obtuse... However the observation is fundamental and accurate enough... i.e. that there is something resembling "Fourier Transforms" operating in the brain...

He further goes on to say "
... It is not proof that the brain is holographic but it is suggestive that the brain is a hologram, and it appears all of our senses appear to rely on "Fourier Transforms" that they all seem to use the same mathematics. So here is evidence that the brain uses the same mathematics to decipher the sensory world as are involved in the making of a hologram...

...Which as I say is not proof but compelling evidence that something is going on there... "

Talbot seems to be aware this is not wholly accurate, but he knows there is something vital going on here. But careful not to call it literally proof of quantum reality. Not exactly like finding an exposed part of a "holodeck" wall like in Star Trek or something... (lol)

This is similar in principle to the world of computers, we see the same "principles" applied at different levels. For example in memory management, there is a page filing system at the OS Software application level, where data used by the OS and applications is transferred from RAM (random access memory) memory to a "page file" on the hard disk.

This same principle is again repeated at the hardware level where machine language data is "paged" using different algorithms at the RAM level between conventional memory (directly addressable by the CPU) and Extended Memory (not directly accessible by the CPU, but piped through a bottleneck back and forth to conventional memory) I wonder if people are aware how precarious and hugely inefficient the Intel 8086 architecture really is (LOL) it is one of "Wintel's" ugly little secrets. Ever since we past the 1st MB of memory ALL memory above that (i.e from the 2nd MB up to the 4000th MB in a 4 Gigabyte RAM system for example) is ALL Extended memory!!! Thus virtual memory management operates throughout the computer because back in the first days the cost of producing memory was so precious, it was cheaper to build all this programming riggamorole instead to get around it by fooling the computer into thinking it had more physical memory then it really did. All this because Bill Gates thought we would never need more the 640KB (i.e. .65 of 1MB!!! Quite the 'visionary' he was eh!) Not to get too far off topic, but the purpose and function of paging memory at the software level within the OS environment is completely independent of 'data paging' at the machine level... mind you though one creates it's 'environment' and is dependent for it's existence on the 'environment' created by the other... (keep this in mind... )

So both operate according to a similar principle for similar purposes (maximizing limited memory space by creating a virtual memory, which is essentially fooling the 'program' to think it has more memory then it does by having a guy run to the back of the room and remove some bricks from the wall and rebuild them ahead of where the 'program' is walking toward... and when the program 'walks back to another area' the 'guy' (a subroutine) runs ahead and grabs those bricks and puts them back again. The whole time the program is saying "my this 'room' in this building is so big!!!) Also it should be noted, "virtual memory" environment at the pure machine level provides the necessary 'environment' that allows the other 'subroutine' (page filing system) at the OS level to do essentially the same thing all over again!!! So it is literally a virtual memory built on another virtual memory system! (You can imagine my wonder and awe... It doesn't amaze me when Windows crashes but that it runs at all (LOL) But there you have it... your techie metaphor of how one virtual reality can literally exist on top of another virtual reality. And that is what I am suggesting that Talbot stumbled upon when he discovered this phenomena operating within the relatively 'physical' sense and brain system of the physical body.

In other words the universe may be holographic at the atomic quantum physics level, and by some strange sense of symmetry we also see a manifestation of this same principle at the physical body experience level of reality. How does one get a physical body comprised of physical matter to "experience" physical reality external to it? How indeed. How does a physical bundle of trillions of nerve synapses locked inside a claustraphobically small enclosed box create an "experience" of external reality within it's physical parameters using sensory data, that has all been reduced to electrical stimuli? How does a computer monitor and speakers 'translate' data from the CPU?... ie. take ones and zeroes and runs them through algorithms (programs) that reinterpret (or creates) pictures and sound. That is the "illusion" It doesn't mean it doesn't have any basis, it just means it is "created" from something else

Not to confuse the quantum with the physical at this point (this is all very 'physical' in this context. The reality is, at this level of Newtonian manifestation, there IS physical matter out there. (whether an observer is observing it or not) but how does an enclosed physical system (like a brain encased in a skull) recreate that external reality so that the image in here appears as the "observer out there"!? There has to be some slight of hand! Again it would have to incorporate the size and distance and the space and all the colour and properties of things and their relation to other objects into... a "virtual reality"! A holographic representation would be the most efficient and accurate means... but of course! (lol) In this case it is not evidence of a quantum interpretation but more like a manifestation of the same principle in our Newtonian world. A Newtonian allusion or mimicry to the quantum principle of holographic reality. Which it, itself, is a manifestation of. The Universe has created a physical body/brain which is a computer that has created a virtual reality within the physical world. Which is itself a virtual reality manifested and created from and exists within the quantum world.

So in studying the physical makeup and the complex function of the physical body/brain and it's computer like functioning and the "Fourier Transforms" like functions of its sensory system, I can make reference to Talbot's reference to (William Blake's famous quote!) and thus see a hint of the mechanism of holographic principle operating in the Body/brain, thus we see the universe in a 'grain of sand' the manifestation and evidence of a more fundamental principle...

Ok, I think this wraps up this 'bug' in my head... ever since I read and heard this and then listened to Dr Sacks... my head started spinning... lol ... The quantum may very well be a holographic "something" But we can see it's manifestation re-expressed in our physical world right in our very own physical make up.

Now here is the "kicker" ...Of course none of this explains the "observer" The "I AM" presence. Like a holographic video game. It explains how the computer works, and how the 'holographic goggles' work and why it is programmed that way. And how when you put the 'goggles' on you "see" this "other virtual computer generated reality" (and btw if you ever tried it, it is an awesome experience!)

But in our "real" world it doesn't explain "who" is putting on the "goggles" and the "gloves" and having the experience!!! Now that takes us right back to the doorstep of the quantum world!... haha LOL ...

peace