Respectful Insolence

In blogging, there are some topics that I know that I really shouldn’t bother with; yet, somehow they suck me in. A number of things can cause that. Perhaps it’s a topic that just gets under my skin to the point where I can’t hold back a commentary, even when I know that it might be wiser to remain quiet, be it because of the flak that my commentary will bring (antivaccination lunacy, HIV denialists, certain forms of quackery) or because of the threat to my sanity if I allow the irritation of them to go unanswered.

I address this topic because of the latter reason.

I’ve discussed why creationist neurosurgeon Dr. Michael Egnor (a.k.a. the Discovery Institute’s newest and most enthusiastic recruit) gets under my skin. It’s the sheer embarrassment of sharing a profession with someone who can spew so much creationist nonsense so prolifically. When last I left him, he had just struck out with three rather silly analogy about detecting design and his claim that altruism is not a product of the brain. I’m not the first to liken Dr. Egnor’s latest excursion into dualism (the concept that the mind is something separate from the substance of the brain) is very similar to Choprawoo, that special brand of cosmic woo that only Deepak Chopra can dish out. (Or maybe I am.) However, I never went quite so far as to say what I’m about to say now:

Michael Egnor is Deepak Chopra. I’m becoming increasingly convinced of it. Let’s look at the evidence, shall we?

First up, let’s look at Dr. Egnor’s recent post, Verizon deniers find a cellphone. In this post, he uses quite the odd analogy. He imagines scientists living on an isolated island who have sophisticated science, except that they do not believe that telecommunication is possible. He calls this civilization “Verizon deniers” and then makes this analogy:

One day, they find a cell phone (it dropped from a plane or something). They turn it on, and they hear things. They hear hissing, cracking, and what sounds like voices!

The Verizon deniers are amazed! So it’s off to the lab, and soon the Verizon denier scientists have the answer. They show that all kinds of things — chemicals, mechanical impacts, electrical interference — can change or ablate the voices. They find that certain sounds the voices make are consistently associated with patterns of activation in the cell phone circuits. They found that some aspects of the voices — tone, amplitude, etc. — are localized within the cell phone. They conclude that the voices are simply an emergent property of the cell phone circuits!

However, one of the scientists, a Verizon accepter, isn’t so sure. He says:

“What if the cell phone is necessary for all of the noises, but only sufficient for some? What if some of the noises in the phone are actual voices of living people, and are merely transmitted through the phone, but not caused by it?”

The Verizon deniers say: “How can you prove it?”

Dr. Egnor then goes on to describe how the “Verizon acceptor” does a bunch of experiments that lead him to conclude that the “cell phone is insufficient to fully account for the noises (i.e., the voices) that have meaning, because meaning is not a property of matter. Of course, he’s concluding his own premise in a way; after all, “meaning” is a human construct, and if the brain is sufficient to explain the mind, then “meaning” is arguably a property of matter–the matter of the brain. Egnor simply assumes that the mind cannot be explained by the brain. The only thing that can cause meaning is a person,” concluding:

I propose that any credible theory of the mind must at least provide a basis for discerning that a voice from a cell phone is generated by a person, not the phone. It’s a kind of inverse Turing test — it tests the theory, not the machine. As I see it, none of the materialistic theories of the mind would provide a clear basis for identifying the voice in a cell phone as a person and not as an emergent property of the phone. If a theory can’t get a cell phone right, I don’t trust it with the mind.

Dr. Egnor seems to be making the analogy that the human brain is like a cell phone receiving transmissions from somewhere. Instead of the circuitry of the brain being enough to to account for the properties and activities of the mind, instead of its being the generator that produces the mind, Dr. Egnor seems to be saying, in reality the brain is at least in part some sort of receiver that receives some necessary information of the mind that is somehow expressed as brain activity. Presumably, given Dr. Egnor’s Christian bent, the entity transmitting to the brain is either a soul, which resides he says not where, or perhaps Jesus or God.

There are a lot of problems with Dr. Egnor’s analogy. For example, noises coming out of a cell phone are meaningless without a human being who understands language and emotion is there to hear them. Absent that, they’re just noises. Even so, Egnor’s actually sort of correct; any credible theory of the mind does need to have a basis for discerning whether properties of the mind are inherent to the brain. The problem for Egnor and other dualists is that we do have such a basis for making that call scientifically. Let’s go back to the cell phone example, as silly as it is. If specific alterations in the circuitry of a cell phone could result in substantive changes in what the voices coming through say and the emotions they express, then it would be possible to argue credibly that the voices are inherent to the phone. If changing such circuits could not substantively change what the voices coming through the phone or the emotions being expressed, then the more likely explanation is that the content of the voices coming through is not a property of the phone itself. See where I’m going with this? Specific damage and alterations to the brain do indeed cause changes to the content, emotion, and “personality” of the “voice” of a person. Such changes can involve everything that makes us human: emotion, intellect, sexuality, and, yes, even altruism. Of course, if I really wanted to take it down to Dr. Egnor’s level, I could trash his analogy by simply pointing out that putting a cell phone into a lead container would make the voices go silent, while taking it out would let the voices speak again, pretty clearly indicating that the function of the phone depended on an extrinsic electromagnetic signal reaching it, a signal that lead could block.

But there’s more evidence against dualism. We can study the brain to see if properties of the mind depend upon the intact functions of the brain. We have mapped many aspects of mental activity to specific anatomic structures or groups of neurons in the brain in reproducible ways, and scientists continue to map more and more each year, making the map finer and finer. We know this through functional MRI studies that produce maps of brain metabolism as different mental tasks are carried out or various emotions provoked. We know this from the study of brain injuries to specific structures in the brain and how such injuries result in defined changes in personality and brain function, including–yes–altruism. We know this because we can alter mental states in reproducible ways with drugs, be they antipsychotics, anti-depressants, or recreational drugs.

Of course, Dr. Egnor’s lame arguments for mind-brain dualism, where he seems to be arguing that some essence of the mind somehow dwells outside the brain, remind me very much of some serious woo that I’ve had some fun (and aggravation) before. Yes, I’m talking about Choprawoo. For example, let’s look at this blast from the past:

The mystery of life cannot be solved without answering one essential question. Why are human beings intelligent? In common understanding, we are intelligent because of our brains, our brains are intelligent because of the operation of brain cells, and brain cells operate because of genes. By this reasoning, either genes must be intelligent in their own right, or by some magic of chemistry, molecules that lack intelligence produce it when combined in various ways.

So, is this whole line of thinking false? To a materialist it must be true without question, and any attempt to find intelligence outside the brain–meaning outside DNA–is preposterous. Except that it isn’t.

I’ve dealt with this woo in detail before; so there’s no need to repeat myself. But, here’s some more:

Can we claim that intelligence is simply an illusion? This sounds absurd, but it seems to be a prevailing attitude among certain philosophers and many neuroscientists. Their notion is that consciousness has no ultimate reality but is instead a property thrown off by brain chemicals–the way heat is thrown off by a car engine–creating the illusion of a mind simply because the processes involved are so complex.

I don’t think this theory can stand the test of common sense, because human intelligence is millions of times too complex to be generated by random chemical interactions. Also, as one respondent pointed out, the Cartesian split between mind and body is no longer tenable. The mistake this responder makes, however, is to believe I uphold such a split. I don’t. I am looking for a fusion of ideas that will allow us to have a single brain-mind system. Chemicals can’t give us one, but consciousness can. If the entire universe is an arena of consciousness, there is no need to isolate human intelligence or to argue futilely if genes are smart. By analogy, when a radio plays Mozart, we don’t have to claim that the radio is Mozart, or that Mozart is the radio. The two are meshed–machine and genius find a meeting ground.

I’ve dealt with this woo here.

Truly Drs. Chopra and Egnor appear to be soul-mates, although I will concede that Chopra disguises his belief in dualism as there beign some sort of “universal consciousness” to which the mind contributes and into which it taps.

Still not convinced that Drs. Egnor and Chopra are one in the same? Conveniently, enough, Deepak Chopra has been up to the same sort of stuff as Dr. Egnor in a series of posts called The Mind Outside the Brain. For example, here’s a bit from part one:

By now everyone is familiar with advances in brain imaging and the fascinating insights being produced in many areas of brain research. Much less known are advances in locating the mind outside the brain. Long considered paranormal and therefore easy to dismiss, the reality of many phenomena is being verified. For a long time there has been a popular belief in ESP, clairvoyance, and related abilities. I thought it would be interesting to devote a series of posts to some intriguing studies, but more importantly, there is a major discovery waiting around the corner.

Science is about to realize that intelligence is a field effect and that this “mind field” surrounds us on all sides, like the earth’s magnetic field. It is thanks to the mind field that our brains are able to think and also to connect with other minds, not by physical means but invisibly, the way one magnet is connected to every other on earth.

Here’s a bit from part two:

If it is true that intelligence arises in a “mind field” that surrounds us on all sides, we must all be participating in it. Almost a century ago Carl Jung proposed that our participation takes place in a “collective unconscious,” from which the human race derives its myths and archetypes.

[…]

The assertion that we are embedded in the mind field seems more credible, and if that is the case, then it is more credible that everything we think and do is actually a fluctuation in the field.

But the pièce de résistance, the post that makes me think more than ever that Dr. Egnor must be Deepak Chopra and vice-versa is from part three:

The first two parts of this post brought some highly skeptical responses, generally from those who claimed to have the authority of science on their side when they disbelieved that the “mind field” actually existed. Skeptics are people who demand that you believe them when they don’t believe in anything. Science is an approved method of explaining Nature, but that doesn’t mean that science owns nature. If the mind field exists, we are all inside it, and there is validity in personal experiences beyond what happens in a laboratory.

The concept of a field sounds technical, but it has everyday implications. Many pet owners will attest, for example, to the ability of a dog or cat to know what the owner is thinking. A few minutes before going on a walk, their dog gets excited and restless; on the day when a cat is going to be taken to the vet, it disappears and is nowhere to be found.

He then goes on to describe a story that is, in effect, nothing more than an uncontrolled “study” rife with confirmation bias to demonstrate that pets know when their owners are about to take them to the vet and therefore disappear and hide. If you take Chopra’s series of posts above, and compare them Dr. Egnor’s last couple of posts, including the one linked to above, as well as this one (an article that P.Z. and Steve dealt with quite nicely) in which, incredibly, he claims that, because altruism doesn’t have a location it must be outside of the mind, it’s hard to tell who’s deeper into woo. In fact, come to think of it, if you randomly intersperse all that stuff about a “mind field” (or, as Chopra used to discuss several months ago, a “universal consciousness”) with Dr. Egnor’s more explicitly Christian justifications for dualism, mix up a bunch of Egnor’s posts with a bunch of Chopra’s posts, and then ask people to pick who wrote what, I bet they’d have a hard time telling who wrote which one. The only tipoffs would be that Dr. Egnor’s prose is much more concrete and utilitarian than Chopra’s cosmic woo.

Now that I think of it, I’ve never seen Deepak Chopra and Michael Egnor together. I’ve never even seen a photo of the two of them together. After reading Michael Egnor’s most recent forays into dualism, I’m now not so sure that I can demonstrate to my satisfaction that they’re actually not the same person.

Of course, I could be wrong. After all, Michael Egnor could in reality be Avtar Singh:

The prevailing view in modern neuroscience is that it is the brain that creates the mind. Biological consciousness is treated as an epiphenomenon of the brain under the assumption that there is nothing other than biological consciousness in the universe…Trying to explain consciousness is itself a phenomenon of the human mind. Furthermore, to say that the brain creates the mind is very much like saying that “Radio creates music” or “TV creates news”.

Note the similarity to Dr. Egnor’s whole analogizing the mind to a cell phone. Now that I really think of it, perhaps Michael Egnor, Deepak Chopra, and Avtar Singh are all one in the same person.

It’s an unholy Trinity of Woo, I tell ya! Can’t you see the resemblance?

i-e84debae30722c08cad037bd4a45087c-966.jpg i-541ba35e43672da8b2ea57d2c05e3671-deepak-chopra-2.jpg i-9318bd661ab004c7efa307ac29f0f4ea-avtarsingh.jpg

I know, I know, they don’t look that much alike. But throw off the shackles of materialism and delve into the mysteries of the soul or God (Egnor) or the universal quantum consciousness (Chopra and Singh), and you will see!

Finally, all of this brings up a point about my reaction to Dr. Egnor’s drivel that has been consistent since he first dove head first into the pool of “intelligent design.” Regular readers know that I’m referring to my sense of shame over a fellow surgeon spewing such inanities to the world, proving once and for all that you don’t have to be a brain surgeon to be a brain surgeon, if you know what I mean. It started with my wanting to put a paper bag over my head after reading each new foray into Egnorance to grandiose plans to forge a more–shall we say?–permanent solution in the form of a replica of the metal mask that Doctor Doom wears to hide his shattered visage, to an even more grandiose vision of a face-obscuring helmet like the one that Galactus, Devourer of Worlds, wears. Now, I have a question for Dr. Egnor:

If my brain is but a conduit for some other “force” that is the real “mind,” then why is that force causing me such extreme embarrassment every time I encounter your arguments, to the point that I come up with such bizarre ideas for covering my face? What is the “soul” or “mind field” that leads me to delve deeply into Egnor’s fallacious arguments, even though I know it causes me mental pain?

My inquiring mind wants to know. Or at least the neurons responsible for my sense of shame do.

Comments

  1. #1 Skeptico
    June 18, 2007

    Chopra and Egnor are one – perhaps the ultimate “dualism”.

    Although what Chopra is proposing sounds more like subjective idealism than dualism.

  2. #2 ERV
    June 18, 2007

    *squint*

    Youre just trying to throw us off the idea that YOURE ‘Engor’, pulling off the funniest Sokal ever. hehe!

    Bleh I rember reading Dennet for the mind-body ‘problem’ in Philosophy 101– Nice to see Engor ignored liberal arts courses like he ignored his biology courses…

  3. #3 KeithB
    June 18, 2007

    Paging Dr Sacks! Paging Dr. Sacks!

    http://www.oliversacks.com/

  4. #4 Ahcuah
    June 18, 2007

    Small note: when you refer to the lead box, you must have been thinking of radioactivity, not radio waves. For radio waves, any sort of Faraday cage will do, and all those require is metal walls (the conductivity is what blocks the EM waves).

    Regarding dogs and their “ESP”, my dog can always tell when I have finished breakfast and am about to put my plate on the floor for her. The moment of truth is when I put down my fork (and she has gotten very sensitive to it even when I put it down very gently). Nothing magical or wooey, just paying attention very carefully. She does the same when I open up my pair of sunglasses (which makes a very slight clicking noise): that means I’m about to head out onto the deck.

  5. #5 Elf M. Sternberg
    June 18, 2007

    You got Dennet in Phil 101? Really? How cool. My Phil 101 teacher loathed Dennet with a passion; thought the man was too simplistic and materialistic.

    Dennet has since become one of my favorites.

  6. #6 Ginger Yellow
    June 18, 2007

    “Of course, he’s concluding his own premise in a way; after all, “meaning” is a human construct, and if the brain is sufficient to explain the mind, then “meaning” is arguably a property of matter–the matter of the brain”

    I’m not sure I agree with this. I would argue that meaning is a construct of agents, human or otherwise. Certainly humans are the most prolific meaning generators around, but a dog or a fish generates its own meaning too.

  7. #7 Orac
    June 18, 2007

    Even if that’s true, then “meaning” would still arguably be a property of matter, except that it would be the dog or fish brain that causes it. ;-)

  8. #8 Calli Arcale
    June 18, 2007

    What still baffles me is why some folks seem to require that the soul be an external entity. Why can it not be the mind itself? How would it deny Christ to say that the soul *is* the mind, and that the mind is a product of the brain? After all, Scripture says that God created Man in His image. Ergo, if God wanted us to have “souls”, all he needed to do was ensure that we’d wind up with a brain capable of executing the mind. (Whether he did this by making us out of clay or by allowing evolution to take its course is really unimportant to the theological implications of this, but again, some folks get bogged down in the details.)

    In short, if God made Man, why would it be a problem for the mind to be 100% the product of the brain that supposedly God intelligently designed? Wouldn’t an IDer find it better if the soul were entirely the product of the brain, since that would give a specific purpose for our particular “design”?

    Note: I find ID to be intellectual twaddle. It offends my scientific sensibilities. However, as a Christian, I find it simply unimportant — Christ’s message doesn’t depend on how we came to be; it only matters *that* we came to be. As a consequence, as a Christian I am very depressed to see people supposedly championing Christ’s message when in fact all they’re doing is putting up walls — in the case of Egnor and the DI, between Creationists and others who evidently aren’t “good enough”. What’s worse, they feel that this division is so important that they are willing to consciously lie to people in support of it.

  9. #9 Joseph Hertzlinger
    June 18, 2007

    Egnor, Chopra, and Singh are obviously in a superposition of states.

  10. #10 Blake Stacey, OM
    June 18, 2007

    My own take on Egnor’s latest silliness is here.

    [/shameless blog-whoring]

  11. #11 natural cynic
    June 18, 2007

    If my brain is but a conduit for some other “force” that is the real “mind,” then why is that force causing me such extreme embarrassment every time I encounter your arguments, to the point that I come up with such bizarre ideas for covering my face?

    Your conscious mind is stuck in a snarky place, the abode of some deceiving intelligence. Alas, mine is there, too. Or, maybe we have succumbed to the dark side of the force.

    You see, it’s so much more sophisticated than heaven and hell ;-\

  12. #12 TaylorF
    June 18, 2007

    Douglas Hofstadter’s Goedel, Escher, Bach and I am a Strange Loop, as well as Igor Aleksander’s How to Build a Mind, have a lot of good information regarding consciousness as an emergent property of a neural network. Hofstadter’s books in particular tend to be somewhat math-heavy, but I imagine that wouldn’t bother too many people on ScienceBlogs.

  13. #13 sailor
    June 18, 2007

    The photos would preclude that they are the same person. However, has anyone considered they may all have the same extreme personality? A type that is unable to grasp abstract cocepts and thinks of abstract things as if they are literal things.
    It is beyond them to understand how a biochemical brain can generate consiousness so they establish a non-abstract construct the soul, which is to them a very real thing.

  14. #14 Shaun
    June 18, 2007

    More Chopra, this time with examples:

    “With the discovery of mirror neurons, another piece of the puzzle was added, the puzzle being how we learn and understand others. Learning occurs in the animal world largely by imitation, it is thought. Recently whale researchers were startled…”

    “The same mysterious mix of free will and determinism holds elsewhere. It has been observed that when new mothers are away form home, their milk flow will start when the baby at home cries because it is hungry. Shared rhythms exist everywhere in nature. College women living together in dorms are known to have their menstrual cycles begin to synchronize. Whenever there is synchronicity without contact between the two events, only mind outside the brain offers an adequate explanation. The phenomenon of identical twins being in communication is one example. One twin will sense the exact moment when the other is injured or dies, often feeling a mirror image of the trauma in their own bodies. (I personally witnessed one such example: a twin had an abdominal attack in my presence at the moment when the other twin was mugged and stabbed in the stomach in a distant city.)”

    http://www.huffingtonpost.com/deepak-chopra/the-mind-outside-the-brai_b_52626.html
    http://www.intentblog.com/archives/2007/06/the_mind_outsid_4.html

  15. #15 Steevl
    June 18, 2007

    Some people have a terrible habit of setting up thought experiments where the hero just happens to be right, as a matter of contingency. The fact that actually, yes, the voices are coming from elsewhere doesn’t make the “Verizon accepter” reasonable, or right to assume the cell phone doesn’t produce the voices. He’s just lucky. What on earth is that supposed to prove?

    I guess making up stories where someone like us proves all the other idiots wrong is fun. Perhaps Egnor would like to turn his story into a comic book, where the devistatingly handsome “Dr Angor” makes fools of the nasty scientists that are mean to him. That’d show them. Then they’d all be sorry.

  16. #16 RavenT
    June 18, 2007

    College women living together in dorms are known to have their menstrual cycles begin to synchronize. Whenever there is synchronicity without contact between the two events, only mind outside the brain offers an adequate explanation.

    Oh, good lord. Isn’t he supposed to be an endocrinologist, or did he get his board certification out of a box of Cracker Jacks, too?

  17. #17 RavenT
    June 18, 2007

    sorry, but I just can’t let that last one go–it’s so stupid, it burns!

    So why doesn’t the “mind outside the brain” find a solution to <insert your least-favorite scourge here>?

    Maybe it can’t find the time, what with being so busy synchronizing all those women’s periods?

  18. #18 Science Avenger
    June 18, 2007

    You should post a bunch of photos of Chopra over time. It’s amusing to see that Mr. Ageless Body Timeless Mind is aging towards the grave just the same as us mere mortals.

  19. #19 Glen Davidson
    June 19, 2007

    I’ve dealt elsewhere with the fact that Egnor’s “argument” is that “meaning” is found over the Verizon phone, which is supposed by him to indicate that the signals come from elsewhere, by showing how the exact same “indication” could be found on an MP3 player. Ergo, ID makes Egnor sound like an idiot, which he probably isn’t.

    OK, but that’s done. Egnor tries to come up with arbitrary reasons why the islanders (who can find out everything about the technology except what the simplest part, the antenna, does) won’t consider transmission of signals to the phone, like they “believe only air can transmit voices”. It’s so contrived, and almost completely pointless, since we could always “invent” a scenario in which people really couldn’t figure out where the info for the voices is coming from.

    The cell phone scenario is just dumb, since interference would be obvious.

    For a better analogy, just go to Gilligan’s island, wash their phone cable up on shore again, and set about making a nearly tamper-proof phone system (no charge). Then you have the choice of setting up only a receiver, or setting up a receiver and a microphone.

    With the microphone it’s just too easy. You speak, the other person responds, and you know that somehow their “voice” is being transmitted to you. Now why isn’t the soul like that? Why am I bothering to write this instead of simply responding to all of your thoughts?

    But okay I’ll play along, with only a receiver what does one know between the phone system that they haven’t been able to pull apart, vs. the MP3 player? Nothing, really. I suppose if they monitored the phone cable forever and noticed that it continued to change, they might suspect transmission. Or not. It may not be so long until, for a modest price, a “humanly infinite” amount of voice data might be on record in a fairly small space, like the cable box. The MP3 is more limited in storage, but its batteries would run out before the data would, hence the difference between recorded info and transmitted info would be impossible to discover in this case.

    Now getting to the summing up portion, Egnor’s “point” is that you couldn’t tell if the Verizon cellphone existed independently or not, at least from the technology. Well, you certainly could, since anyone knows that cellphones are subject to interference.

    His other “point” is that you could discern transmission because the voices have meaning, which suggests that Egnor either can’t or won’t think his analogies through. We have computer storage and MP3 players precisely because they can record “meaning” (more correctly, they record data which have meaning to us).

    However, if he came up with a scenario in which one truly could not differentiate whether the machine was receiving transmission of “meaning” or playing back recorded “meaning” (my highly tamper-resistant phone system on Gilligan’s Island vs. the MP3 player with voice recordings), what would be the proper “conclusion” to be made?

    Any reasonable being would have to either conclude that the phone and the MP3 player were both apparently operating without input from the outside, or recognize that they don’t know for sure either way. It would be impermissable to assume that the tamper-resistant phone system and its receiver (case with no microphone) were receiving information from the outside world without any evidence that this was occurring.

    Egnor is making the entirely pedantic and useless observation that things could be happening without us knowing. We know that, Egnor. That’s why we demand evidence for your claims, rather than rattling off a list of things that we can’t completely rule out. IOW, give us some evidence, not platitudes.

    Glen D
    http://tinyurl.com/35s39o

  20. #20 mark
    June 19, 2007

    Chopra must be right. I’ve seen very convincing evidence presented in several episodes of Dr. Who, as some controller (i.e., an Intelligent Designer) transmits commands to other beings.

  21. #21 Patrick
    June 19, 2007

    I would propose that either, or all three of the above, address what happens to conciousness during a period of Anesthesia. For if one cannot have a theory of mind that explains that, then one does not have a fully plausible explanation. (AGH, did the universal mind field cause that last sentence to be inflected like them? /woo who? lol)

  22. #22 Glen Davidson
    June 20, 2007

    I would propose that either, or all three of the above, address what happens to conciousness during a period of Anesthesia.

    My tentative explanation is here.

    I didn’t deal with anaesthesia explicitly there, but the point that the unconscious is the lack of sufficient interactivity within the electric fields of the brain (most associated with action-potentials) agrees well with the observation that anaesthetics depress neuronal activity, and thus the potential for interaction of the transient electric fields resulting from action-potentials. Something like that would be my falsifiable explanation for any unconsciousness existing in unmyelinated and typically coordinated brain regions, including brain regions that are conscious in the waking state.

    Glen D
    http://tinyurl.com/35s39o

  23. #23 Glen Davidson
    June 20, 2007

    I would propose that either, or all three of the above, address what happens to conciousness during a period of Anesthesia.

    My tentative explanation is here.

    I didn’t deal with anaesthesia explicitly there, but the point that the unconscious is the lack of sufficient interactivity within the electric fields of the brain (most associated with action-potentials) agrees well with the observation that anaesthetics depress neuronal activity, and thus the potential for interaction of the transient electric fields resulting from action-potentials. Something like that would be my falsifiable explanation for any unconsciousness existing in unmyelinated and typically coordinated brain regions, including brain regions that are conscious in the waking state.

    Glen D

  24. #24 Blake Stacey, OM
    June 20, 2007

    AFAIK, the most recent research into general anaesthesia points to chemical effects on ligand-gated ion channels. For details, see Siegwart et al. (2003) and the first two references therein.

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