• Quick note - the problem with Youtube videos not embedding on the forum appears to have been fixed, thanks to ZiprHead. If you do still see problems let me know.

Brain processes and individual experience

davidsmith73,

But they do. The electrochemical signals in your brain will affect mine to a very small degree in various ways. Experiences are said to have an objective existence in the form of a brain process. But we have just established that a physical brain process is not a truly separate thing because all matter is connected.
If I put my ear close enough to your head I can hear you thinking?

There seems to be at least three potential problems with your theory here.

First, the "leakage" is extremely local. You phrase it as "to a very small degree". A very very small degree in deed! In fact, so small that the word "negligible" is probably appropriate.

Second, you seem to be confusing the cause with the effect. If you and I are sitting at the edge of a still pond, but out of sight of each other, then you will see ripples in the water if I throw something into the pond - but you will have no idea what I threw in. A boot? A rock? Even if the (negligible) ripples are actually detectable, they aren't the same thing as the object that caused
them.

Third, the interpreter is different. Your brain has been trained, adapted, and modified overtime by your experiences. As you eye deteriorate physically, the brain adapts and learns to "fill in the gaps" of the raw experience. So even if you could transfer the physical processes that generate my experiences into your head somehow, you wouldn't necessarily interpret them the same way.
 
Re: Re: Brain processes and individual experience

Actually the answer to that is very simple. They would be two very seperate entities upon the completion of duplication process. You'd still experience yourself as the original, but you'd then have a clone of yourself standing right before you, now experiencing new things. :)

Interesting Ian said:


David,

Let's suppose materialism is correct. Now imagine if someone were to create a "matter duplicator", and made a precise copy of a person's body. So what we have here is a bit like something such as the transporter in star trex, except the original doesn't get destroyed. Now after making a duplicate of someone's body, would they then exist 2 streams of consciousnesses, although (at least initially) with identical personalities? Or alternatively would they just continue to be one stream of consciousness which simultaneously experiences out of both the original body and the duplicates body, so that the person sees simultaneously out of 4 eyes etc? Or some other possibility?
 
Interesting Ian said:

That's materialism/physicalism or epiphenomenalism, not naturalism.

But why isn't David a by-product of their brain processes?

And that is something I simply can not answer no matter what methodology or line of thought I try to subscribe to. If I was to go with dualist view and say the mind, or my conciousness is what creates the me illusion, I still can not answer how my mind ended up inside my current body and not somewhere else. If I introduce a "selector" into the picture (Occam's going to have a heart attack soon) such as a God entity or something capable of performing the mind/body selection process, I am left with why is the selector the selector and not me the selector. :eek:

Not only that but I'm introducing fantasy elements with no evidence...
 
Re: Re: Re: Brain processes and individual experience

ImpyTimpy said:
Actually the answer to that is very simple. They would be two very seperate entities upon the completion of duplication process. You'd still experience yourself as the original, but you'd then have a clone of yourself standing right before you, now experiencing new things. :)

...and fully believing that he was the original, since he has a lifetime worth of memories...(assuming the reproduction was instantaneous, the memories would be identical, since the memory of being replicated--an instantaneous process--would not exist). Of course, the two would diverge from that moment on with their unique experiences...

...you say "very simple"...you have read the other similar threads, no?:D
 
Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Brain processes and individual experience

davidsmith73 said:
But they do. The electrochemical signals in your brain will affect mine to a very small degree in various ways. Experiences are said to have an objective existence in the form of a brain process. But we have just established that a physical brain process is not a truly separate thing because all matter is connected. Yet, experiences are said to be a closed system as evidenced from our individual experiences.

We have established this? All matter is connected means that all connections are meaningful? You have quite a ways to go before you get from "connection" to real influence. But then, DD and Loki have already explained that, so I'll just agree with them.

Do you view digestion to be the same thing as the physical processes of the stomach in exactly the same way that experiences are the same thing as the processes of the brain ?
They don't have to be exactly--they just have to be the processes of that particular stomach, and that particular brain. It is enough that neither of them is a shared, community experience. Certainly, all matter being connected, my stomach exerts a greater gravitational attraction after a huge meal than before, but oddly enough, that is not the way my wife finds me more attractive. There's influence, and then there's influence.
 
Pot head 1: ffffffffffffffpptt...cough!...cough! Dude, why am I "me"
and not "you"?

Pot head 2: ffffffffffffffpptt. cough!...I dunno, could it be that what
we call the self is derived form the unique
combinations of interconnections in the billions of
neurons in our brains shaped by the individual
experiances we have in our lives. Much like how
the nucleaic acids combine in different orders
to produce a unique individual. There is anecdotal
evidence to support this supposition in people
who have suffered brain damage and have lost large
amounts of their memory. The loved ones claim that
the victims have, in essence, become a "different"
person. I remember once I had an art teacher
who used to be super strict, ultra-conservative
extrovert "type A" personality. After a bad car
accident in which he suffered brain trauma, his
personnality did a 180. He became this quiet,
softspoken, mild, ultra-conservative introvert
"type B" person. I know, dude it could have been
psychological. But WOW!!! It was like he was
a different person, man. Unless of course you
believe that the "self" is not derived from biological
physicality, but from ....uh..then....uh...Man, what
were we talkin' about?...

Pot head 1: Huh?.....what did you say?

Pot head 2: Huh?........was I say'n somethin'?

Pot head 1: Man, am I hungry.

Pot head 2: Yea, let's go to Taco Bell.
 
Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Brain processes and individual experience

Dancing David said:


Uh, dude, check your facts, the electrical part of the signal is not anything like a radio or anything. It is a potential created by sodium, calcium and potasium. It is not an electrical signal like emr or electrons in a power line. It is more like a biological osmotic filter driven by the very small charges associated with the ions. The actual signal is at the synapse and it is totaly chemical.
So your statement is like saying that a reaction in a vessel in a lab will have an effect on the chemicals in another vessel.


I am well aware of how the nervous system works. I am also well aware that any physical process will have an effect on another physical process wherever it is located in space. The size of the interaction in not the point at hand.


That is true all matter is connected in different ways, the burden would be to demonstrate that there is a significant or meaningful effect. So do quazars at the edge of the unverse effect your behavior? They are connected to you through gravity and entropy, how do they effect you?


This is not the issue. The issue is the inconsistency between what is proposed to be physically true but not true in terms of experience. Materialism proposes that an experience is the same thing as a physical process and has an objective existence as such. Yet materialism views the physical aspect and experiential aspect in different ways. The physical aspect is not truly separate from the rest of the universe. This means that any physical process is not a separate entity. If we treat the experiential aspect of a brain process in exactly the same way as we treat the physical aspect, which we should if they are one and the same thing, then the experiential aspect is not a separate entity either. This would seem to negate the fact that we have separate experiences.


They are closed in the sense that they do not have meaningful impact on others except through our actions.

But they must have at least some impact. So where does individual experience come from ? (in a philosophical sense)



This is more of the c-word as privileged 'event', there is nothing anymore special about the c-word than there is to digestion. A plant makes sugar from sunlight, can you? Do a plant require some special realm of 'photosyntesis' to do this thing.

In materialism there are no 'special' or privileged events, you seem to elevate human awareness to some special realm, it is not special, it is as important as farting. It is a product of biological existance.


Exactly my point ! Materialism holds that there is no such thing as a truly separate physical process. Experiences are said to be the same thing as a physical process yet we have an individual experience which is tied to a particular physical process.

Perhaps I am misunderstanding the materialistic notion that an experience is the same thing as a physical process.

By the way I don't get what you mean by c-word ? Consciousness ?
 
Loki said:
davidsmith73,

First, the "leakage" is extremely local. You phrase it as "to a very small degree". A very very small degree in deed! In fact, so small that the word "negligible" is probably appropriate.

The size of the effect is irrelavent. The fact that all physical processes are connected seems to negate the idea that a subset of the physical universe can be regarded as separate in an experiential sense of existence (ie, individual experience)


Second, you seem to be confusing the cause with the effect. If you and I are sitting at the edge of a still pond, but out of sight of each other, then you will see ripples in the water if I throw something into the pond - but you will have no idea what I threw in. A boot? A rock? Even if the (negligible) ripples are actually detectable, they aren't the same thing as the object that caused
them.

I don't see how this is relevant to the argument :confused:

Objects existing as separate things is not a valid concept according to materialism.


Third, the interpreter is different. Your brain has been trained, adapted, and modified overtime by your experiences. As you eye deteriorate physically, the brain adapts and learns to "fill in the gaps" of the raw experience. So even if you could transfer the physical processes that generate my experiences into your head somehow, you wouldn't necessarily interpret them the same way.

Again I am confused by the relevance :confused:
 
Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Brain processes and individual experience

Mercutio said:

We have established this? All matter is connected means that all connections are meaningful? You have quite a ways to go before you get from "connection" to real influence. But then, DD and Loki have already explained that, so I'll just agree with them. [/B]


As I said to them, the size of the effect is not relevant to the argument. Why does the effect have to be "meaningful" in degree ? The fact that materialism holds that the physical universe does not contain any truly separate processes means that experiences cannot be separate either since they are the same thing as a physical process. Individuality should not exist.


They don't have to be exactly--they just have to be the processes of that particular stomach, and that particular brain. It is enough that neither of them is a shared, community experience. Certainly, all matter being connected, my stomach exerts a greater gravitational attraction after a huge meal than before, but oddly enough, that is not the way my wife finds me more attractive. There's influence, and then there's influence.

I think the problem with your metaphor is the fact that digestion is defined by logical and quantifiable physical relationships whereas experiences cannot be defined this way. Digestion does not exist in the same sense as experiences do. I think even materialism has to ackowledge this.
 
Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Brain processes and individual experienc

davidsmith73 said:



I am well aware of how the nervous system works. I am also well aware that any physical process will have an effect on another physical process wherever it is located in space. The size of the interaction in not the point at hand.

the size of the interaction would be part of signal transimssion. Do you feel that a reaction in one vessel will effect the reaction in another vessel in your chemistry lab.(When they are side by side but not intermingled)


This is not the issue. The issue is the inconsistency between what is proposed to be physically true but not true in terms of experience. Materialism proposes that an experience is the same thing as a physical process and has an objective existence as such. Yet materialism views the physical aspect and experiential aspect in different ways. The physical aspect is not truly separate from the rest of the universe. This means that any physical process is not a separate entity. If we treat the experiential aspect of a brain process in exactly the same way as we treat the physical aspect, which we should if they are one and the same thing, then the experiential aspect is not a separate entity either. This would seem to negate the fact that we have separate experiences.
From the materialist viewpoint they may be connected , but you can still have locality of events. It is not irrelavant to ask if quazars at the edge of the universe effect your behavior! You are tied to them by gravity.

And materialism views the experient as equivalent to the physical process, it is immaterialist who seperates them. Again does chemical reaction in vessel A have a detectable effect on vessel B when the two are not intermingled?


But they must have at least some impact. So where does individual experience come from ? (in a philosophical sense)
Imapct is sperate from signal or meaning-ful interaction. The impact is through the action of the corpse.





Exactly my point ! Materialism holds that there is no such thing as a truly separate physical process. Experiences are said to be the same thing as a physical process yet we have an individual experience which is tied to a particular physical process.
Dude materialism does hold that there are discrete processes limited by the effects of forces in local space time. Things may be connected but that does not mean there is a meaningful transmission of energy or force

Perhaps I am misunderstanding the materialistic notion that an experience is the same thing as a physical process.

By the way I don't get what you mean by c-word ? Consciousness ?

When I have trouble spelling I use c-word, it also takes away some of the special feelings about the the c-word.
 
Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Brain processes and individual exper

Dancing David said:


the size of the interaction would be part of signal transimssion. Do you feel that a reaction in one vessel will effect the reaction in another vessel in your chemistry lab? (When they are side by side but not intermingled)


Yes.


From the materialist viewpoint they may be connected , but you can still have locality of events. It is not irrelavant to ask if quazars at the edge of the universe effect your behavior! You are tied to them by gravity.

Its not behaviour we are talking about, its experience. The locality of physical events does not make them separate from the rest of the universe. So why should individual experience exist if the physical universe does not contatin any truly separate processes ?


And materialism views the experient as equivalent to the physical process, it is immaterialist who seperates them. Again does chemical reaction in vessel A have a detectable effect on vessel B when the two are not intermingled?

Detectable perhaps not but the effect is there according to materialism.
 
Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Brain processes and individual e

davidsmith73:
Its not behaviour we are talking about, its experience. The locality of physical events does not make them separate from the rest of the universe. So why should individual experience exist if the physical universe does not contatin any truly separate processes ?
I don't quite follow your argument. You are a physical process of your brain. Yes, your brain is affected by the environment (and itself affects the environment) but so what? Your brain is only located at one given place at a given time. That makes it "seperate" and individual.
 
not detectable, but the effect is there...I'm gonna have to disagree, for good reason. But we'll keep it simple. A nerve sends info in three manners--synaptic transmission, local potentials, and action potentials. The first two are graded--that is, a small stimulus will elicit a small response. The action potential, on the other hand, is an all-or-nothing event. Any stimulus below threshold does not elicit an action potential; any stimulus above (by a lot or a little) will produce an action potential. There are no "big" or "small" action potentials.

So, while gravity may have continuous effects, declining with the square of the distance away, there is perfectly good reason to suggest that a small stimulus will have absolutely no effect on consciousness. That would give you your "truly separate processes" you desire in order to show separate consciousnesses. Since no action of your brain has enough effect (directly) on my brain to cross that threshold, it makes no difference to say "there is a connection". As I said above, there's influence, and then there's influence.
 
Mercutio, why do you feel your comments above escape the circularity of assuming-materialism-is-True to then providing an argument "proving" materialism is true?
 
Not speaking for Mercutio:

I think that at this point we can drop into the does materialism have a valid basis for being reality.

Yet the original question and the thread are about how materialism leads to a conclusion. therefore the methods of materialsim would be used to defend assumption based on the material model.

I still think that this more of an issue for idealists.:P
 
hammegk said:
Mercutio, why do you feel your comments above escape the circularity of assuming-materialism-is-True to then providing an argument "proving" materialism is true?
I thought the question being addressed was along the lines of "if materialism is true, why are experiences localized, when materialism posits the interconnectedness of all matter?" The truth of materialism is assumed for the purpose of the problem, not proven.

I really hope I didn't post in the wrong thread or something...
 
Mercutio said:


I really hope I didn't post in the wrong thread or something...

Oops, my bad.:( Sorry. In my defense, the OP did not so postulate imo, but that is where the thread has gone.

It's just that "postulating materialism true" for any purpose seems to me like postulating "grandma would fly if she had wings". :D
 
hammegk said:


Oops, my bad.:( Sorry. In my defense, the OP did not so postulate imo, but that is where the thread has gone.
just don't ask me to diagram it...what a long strange trip...and all that...

It's just that "postulating materialism true" for any purpose seems to me like postulating "grandma would fly if she had wings". :D
But given that she had wings, we could reasonably argue about her preferences regarding climate...(mine would fly south...) :p
 
Re: Re: Re: Re: Re: Brain processes and individual experience

I had some trouble trying to find out what davidsmith73 was talking about, but I think Interesting Ian explained it quite clearly:

Interesting Ian said:
I would say that different experiences do not alter the self one iota. It only affects our personality.

I think davidsmith73 assumes three different layers where all the others see only two. First, we have all this matter (your body with your brain). Next, we have the experiences (including qualia, feelings, memories, and so on). And finaly, we have the Self which is experiencing alls these experiences.

What davidsmith73 is asking (if I got it right) is something like: according to materialism, it is obvious that my experiences must be attached to my body and my brain (they are caused by my brain, according to materialism). But why is it that my self is experiencing just this set of experiences and not just any other?

This problem gets even worser if we concede that there are no separate physical processes, just one big universe. If consciousness is a brain process, then there can't be two consciousnesses that are completly seperated. But two Selfes are (by definition, I would guess) perfectly separated.

The assumption of a third layer, the immutable self (explicit in the case of Interesting Ian, supposed in the case of davidsmith73 (hope it is not just a strawman I am attacking)) seems to be very troublesome to me. You would have to explain how it is possible for the Self to experience some experiences (perhaps by having some second-degree-experiences?). Also, what evidence do you have that there is indeed such a Self? Maybe you think this is the thing you couldn't have more evidence: isn't it clear that a Self does exist? I am thinking, therefore is it not obvious that I must exist?

But all I know about it is that there are some experiences. I have no idea who is having all those experiences. And few materialists would agree that there is an immutable Self that stays unchanged , regardless of what ever happens (just the personality changes, according to Interesting Ian). By the way, all this was explained long ago by David Hume, if anyone is interested.

davidsmith73 said:
The fact that materialism holds that the physical universe does not contain any truly separate processes means that experiences cannot be separate either since they are the same thing as a physical process. Individuality should not exist.

I think the idea that two consciousnesses (what's the proper plural?) are completely separate and can't interfere is quite absurd. What are we supposed to do here? I am moving my fingers on my keybord to fiddle with your consciousness. Well, but only I am experiencing my qualias, right? So even if somebody else is typing some words to transfer her thoughts, ideas or emotions into my brain, my qualias are unique, and so am I, right?

Maybe a photon that arives in your eye doesn't trigger a spark in your brain, but due to some unlikely, but possible quantum effect causes a spark in my brain. Maybe a neuron firing in my brain causes something to happen in your brain due to some weird and completly unlikely quantum process. But such effects are so unlikely that it is impossible to notice them at all. So for all practical reasons, my brain processes are seperate from your brain processes, as long as we do not communicate. But this is completly sufficient to explain why your experiences seem to be seperate from my experiences: because they are, for every practical reason. If my eyes see something red, your brain will not experience a red impression. And this is sufficient to be able to speak about "my" experiences and "your" experiences.

To reuse the stomach example once again, how can you define on an atmostic level where one digestions ends and another starts? You can imagine examples where the difference between two digestions becomes some grey-in-grey. But usually, we know quite well where one digestion ends and another one starts.

From a materialistic point of view, you could imagine some kind of Siamese twins with connected brains. Depending on how their brains are connected or separate, maybe they would claim "we are two different selves" or "I am only one self" or some bizzar states in between, like "I feel like having only one immutable self, but two completly different personalities, sharing the same memory" or "I feel like having only one immutable self, but two completly different personalities, each one having its one separate memory", or "I feel like one person in the morning, but like two in the afternoon" and so on.

After all, the idea of a self sounds a bit like a little homunculi sitting in my head, experiencing my experiences. How does he do this? Is there a little homunculi inside the head of my homunculi experiencing the experiences the homunculi makes? And so on. Just drop the self and stick to the experiences.

* * *

Maybe a bit off-topic:

davidsmith73 said:
Materialism proposes that an experience is the same thing as a physical process and has an objective existence as such.

No, it doesn't. Some Materialists say that experiences are physical processes. Others say they are caused by physical processes.
 
Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Brain processes and individual experienc

davidsmith73 said:
The size of the interaction in not the point at hand.
The entire lesson of quantum mechanics is that size really does matter.

The size of the interaction always matters in the real world. Noise is like the Planck lenght: any signal under the noise level doesn't exist.
 

Back
Top Bottom