Page 1 of 3 [ 47 posts ]  Go to page 1, 2, 3  Next

AngelRho
Veteran
Veteran

User avatar

Joined: 4 Jan 2008
Age: 45
Gender: Male
Posts: 9,366
Location: The Landmass between N.O. and Mobile

03 Jun 2010, 8:58 am

ruveyn wrote:
Flair wrote:
For starters thought is not physical.


Nonsense. Have yourself hooked up to an MRI machine (as I have) and you can see yourself think. Thought is the discharge of neurons, an electrochemical process. You have a great deal to learn about neurophysiology.

The quickest cure for ignorance is learning what you don't know.

ruveyn


Nonsense. The "discharge of neurons" is a physical manifestation of the underlying process of consciousness. The electrochemical process follows the thought. It is a result, not a cause. What is a real shame is that there is no way to detect the thought prior to the physical process. If there were, I'm certain that you'd find that here was a latency, however slight, between the time you think a thought and the time it registers on some monitoring equipment.

As a pianist/synthesist, I think of it largely the way my setup works. I have 3 different MIDI input devices--a digital stage piano, an EWI (wind instrument), and a foot controller--and an electric guitar. Each of these things, think of them as nerves responding to stimuli, are routed in some way to a MIDI or audio interface or, in the case of the EWI, directly to a USB port. The computer (brain) is set to respond in specific ways, by sending MIDI instructions to other devices that are also routed to the MIDI output in a sort of daisy-chain configuration: a Frequency Modulation synth, a digitally-controlled analog synth, and a sampler. These sound generating devices are really another kind of brain because they don't actually generate sound, just electrical signals that have to be processed in another kind of way. What happens next is the analog electrical signal generated by these devices is routed back into the computer, which has pre-set ways of handling them. Once the computer has processed or transformed the analog electrical signal (by converting it to a digital signal), it has to send it back to the audio interface in which a DAC changes it BACK to an analog electrical signal--from there it flows throw a wire to an amplifier that drives a monitor, by which the electrical signal is converted into a pressure wave that is suitable for human hearing.

A fun fact about MIDI is it is a SERIAL signal flow. That means only one piece of data can be processed at a time. It happens so fast that to the average listener it might as well be instantaneous. So there is a slight delay (latency) between the time a key is struck to the time it reaches the computer. It takes the same amount of time after the computer recognizes it and routes it to whatever device for that device to respond. From there is a slight delay for the analog signal to reach the computer, another slight delay to process the sound, and yet another delay to send the signal to a final output-stage device that translates the signal into something meaningful.

The problem of MIDI and audio latency is troublesome for musicians. If the system is overly complex or computer resources are limited, timing problems can be longer than half a second.

The brain and the rest of the sensory system is MUCH more complex than a MIDI system, but isn't unlike it in principle. We are aware of our thoughts because our thoughts themselves are instantaneous. Without an idea of what note or chord to play, my setup is silent. The stimulus of pressing a key, touching a plate/blowing air, picking a string, stepping on a pedal is a means through which the computer gains insight into what I want it to do: I have given it a thought. But once that thought has been expressed, there is still that momentary lapse in time before the results are experienced.

Without the thought, there is no voluntary brain activity, only what is required for physical life (why we still breathe while we're asleep). Thoughts trigger whatever part of the brain is required for specific action--motor coordination while walking, for example. But the impulses do not happen for their own sake. They happen in response to the thought. They don't answer the question "Why walk at all?" That could happen for a number of reasons--I'm hungry, I'm going to the kitchen for food. But I could just as easily decide that I'm hungry, but I'd rather just stay in bed or something. There HAS to be a tiny amount of latency between thinking the thought, the physical manifestation of a biochemical response, and follow-through (if any) with psycho-motor response.

Those reactions in the brain are NOT thoughts themselves. They are merely physical manifestations of the human will, or spirit (or soul).



Awesomelyglorious
Veteran
Veteran

User avatar

Joined: 17 Dec 2005
Gender: Male
Posts: 13,157
Location: Omnipresent

03 Jun 2010, 11:17 am

I really tend to doubt it is "just the result", as our very mental processes are impacted by what impacts the neurons. Have you ever gotten drunk? Have you ever taken a hit to the head? I doubt that alcohol and blunt objects are really attacking your soul. Heck the fact that lesions in the brain impact brain functioning significantly is another bad sign for the "soul" idea.

Look, a thinker that I continually recommend on the matter is Dan Dennett, who is a real thinker, unlike Marx.
http://www.ted.com/talks/dan_dennett_on ... sness.html

As Dennett points out, we aren't as conscious of reality as we think we are, and frankly, we aren't actually aware of the mental processes our brain is going through as we'd need to be for dualism to make much sense. This can be seen in Benjamin Libet's experiments.

http://en.wikipedia.org/wiki/Benjamin_L ... xperiments

As it stands, there is really no reason to invoke mysticism in the brain, just as there is no reason to invoke mysticism on car engines. Or let's look at it this way: do you invoke supernatural hypotheses for the functioning of ants? Why then for a process that simply evolved and is a bit more complex than theirs?



01001011
Veteran
Veteran

User avatar

Joined: 3 Mar 2010
Age: 43
Gender: Male
Posts: 991

03 Jun 2010, 1:21 pm

AngelRho wrote:

Nonsense. The "discharge of neurons" is a physical manifestation of the underlying process of consciousness. The electrochemical process follows the thought. It is a result, not a cause. What is a real shame is that there is no way to detect the thought prior to the physical process. If there were, I'm certain that you'd find that here was a latency, however slight, between the time you think a thought and the time it registers on some monitoring equipment.



Based on what you make such assertions? Given that the brain is just ordinary matter, how your non-material thought translate into physical movements? We have not found any such soul-matter interaction in any experiments.

Quote:
Without the thought, there is no voluntary brain activity, only what is required for physical life (why we still breathe while we're asleep).


Based on what you make such assertion?

Quote:
Those reactions in the brain are NOT thoughts themselves. They are merely physical manifestations of the human will, or spirit (or soul).


Where did you leran this? Your magic book again?



01001011
Veteran
Veteran

User avatar

Joined: 3 Mar 2010
Age: 43
Gender: Male
Posts: 991

03 Jun 2010, 1:24 pm

Flair wrote:
It is not ignorance just a different philosophical perspective. You do not need to agree with me. However keep the focus on the discussion not on the individual holding the views.

With regards to my philosophical perspective (dualism) it is just as old as the concept of materialism.

That experiment only proves that when thoughts occur that energy is also produced not that one is required for the other to exist.


Define what is thought and what is mean by thought exists.



ruveyn
Veteran
Veteran

User avatar

Joined: 21 Sep 2008
Age: 87
Gender: Male
Posts: 31,502
Location: New Jersey

03 Jun 2010, 1:48 pm

AngelRho wrote:

Nonsense. The "discharge of neurons" is a physical manifestation of the underlying process of consciousness. The electrochemical process follows the thought. It is a result, not a cause. What is a real shame is that there is no way to detect the thought prior to the physical process. If there were, I'm certain that you'd find that here was a latency, however slight, between the time you think a thought and the time it registers on some monitoring equipment.



Consciousness is an epiphenomena of ions transported through a semipermiable membrane by electrostatic forces. It is all electrochemical. Consciousness is one of many kinds of physical-chemical processes that take place in living things.

Eventually you will learn that EVERYTHING is physical. There is only matter and energy transforming in space-time.

ruveyn



Awesomelyglorious
Veteran
Veteran

User avatar

Joined: 17 Dec 2005
Gender: Male
Posts: 13,157
Location: Omnipresent

03 Jun 2010, 1:51 pm

ruveyn wrote:
Eventually you will learn that EVERYTHING is physical. There is only matter and energy transforming in space-time.

ruveyn

Oh, ruveyn, you show so much hope for the believers. How can I ever learn to be as hopeful as you?



01001011
Veteran
Veteran

User avatar

Joined: 3 Mar 2010
Age: 43
Gender: Male
Posts: 991

03 Jun 2010, 2:00 pm

ruveyn wrote:

Consciousness is an epiphenomena of ions transported through a semipermiable membrane by electrostatic forces. It is all electrochemical. Consciousness is one of many kinds of physical-chemical processes that take place in living things.

Eventually you will learn that EVERYTHING is physical. There is only matter and energy transforming in space-time.

ruveyn


What does 'consciousness' mean in this context?



ruveyn
Veteran
Veteran

User avatar

Joined: 21 Sep 2008
Age: 87
Gender: Male
Posts: 31,502
Location: New Jersey

03 Jun 2010, 2:04 pm

01001011 wrote:

What does 'consciousness' mean in this context?


Neurons discharging in a coordinated fashion.

ruveyn



Awesomelyglorious
Veteran
Veteran

User avatar

Joined: 17 Dec 2005
Gender: Male
Posts: 13,157
Location: Omnipresent

03 Jun 2010, 2:09 pm

ruveyn wrote:
01001011 wrote:

What does 'consciousness' mean in this context?


Neurons discharging in a coordinated fashion.

ruveyn

That's not what it means though. There is a lot of that that we are unconscious of, but that is still neural. Rather, "consciousness" really must refer what mental processes a living being can speak of happening with themselves without the use of a more advanced psychological theory or diagnostic equipment.



ruveyn
Veteran
Veteran

User avatar

Joined: 21 Sep 2008
Age: 87
Gender: Male
Posts: 31,502
Location: New Jersey

03 Jun 2010, 2:57 pm

Awesomelyglorious wrote:
ruveyn wrote:
01001011 wrote:

What does 'consciousness' mean in this context?


Neurons discharging in a coordinated fashion.

ruveyn

That's not what it means though. There is a lot of that that we are unconscious of, but that is still neural. Rather, "consciousness" really must refer what mental processes a living being can speak of happening with themselves without the use of a more advanced psychological theory or diagnostic equipment.


You mean that is not how theologians and philosophers use the word. But in fact it is neurological process. We are dealing with what we ARE, to wit, a variety of animal. Our consciousness is the consequence of neurological functioning. We are physical right down to the molecular level.

It is only god-freaks and philosophers who want to make consciousness supernatural and mysterious. Look at what we really are. We are made of the same stuff as trees and cows.

ruveyn



Awesomelyglorious
Veteran
Veteran

User avatar

Joined: 17 Dec 2005
Gender: Male
Posts: 13,157
Location: Omnipresent

03 Jun 2010, 3:12 pm

ruveyn wrote:
You mean that is not how theologians and philosophers use the word. But in fact it is neurological process. We are dealing with what we ARE, to wit, a variety of animal. Our consciousness is the consequence of neurological functioning. We are physical right down to the molecular level.

It is only god-freaks and philosophers who want to make consciousness supernatural and mysterious. Look at what we really are. We are made of the same stuff as trees and cows.

ruveyn

No, I mean, that your definition was very incomplete. Your definition is like calling a steak to be "cooked animal flesh". Now, while it is true, it misses what identifies steak against other bits of animal flesh.

I agree with your basic ideas though, but a flawed definition is a flawed definition.



Sol-IV
Raven
Raven

User avatar

Joined: 1 Jun 2010
Gender: Male
Posts: 104

05 Jun 2010, 8:27 am

I don't believe in spirits or gods or the supernatural in any way,
I believe.. in SCIENCE! 8O

Though I won't completely shut out the concept of a soul (some form of concious energy..?!) or god-type being (perhaps god-like extra-terrestrials), my beliefs are mainly grounded in what we can know for certain and scientific theories with credibility - and I don't view either spiritual or godly beliefs as having any credible basis...



AngelRho
Veteran
Veteran

User avatar

Joined: 4 Jan 2008
Age: 45
Gender: Male
Posts: 9,366
Location: The Landmass between N.O. and Mobile

05 Jun 2010, 9:25 am

Awesomelyglorious wrote:
I really tend to doubt it is "just the result", as our very mental processes are impacted by what impacts the neurons. Have you ever gotten drunk? Have you ever taken a hit to the head? I doubt that alcohol and blunt objects are really attacking your soul. Heck the fact that lesions in the brain impact brain functioning significantly is another bad sign for the "soul" idea.


I think that the physical and spiritual are linked. There's no doubt about that. However, most (if not all) religions operate on the assumption that the soul/sense of self/consciousness/spirit/ghost/identity/whatever is able to survive physical death.

Sure, one's perspective is affected by natural physical effects, such as drugs, physical trauma, and so on. But that doesn't change the underlying PERSON responsible for the physical body.

My wife's grandmother recently suffered a nasty stroke, which was only discovered after an infection left her severely dehydrated. The drugs used to treat the infection took some time to be effective, and in discovering the recent stroke, a scan showed that over a long period of time she'd actually had several strokes.

The end result was some temporary short-term memory loss and confusion. For about two weeks, she thought it was Monday when she woke up every morning. Over those two weeks and when she went in for physical therapy to try to recover her strength and get her brain functions back up to a level where she could return to assisted living, she came to understand what had happened and understand why it seemed the world doesn't make sense anymore. It's a difficult adjustment.

One of the biggest obstacles she faced in the days after admittance to the hospital was that her sister and certain insensitive nurses and other hospital workers kept pestering her and not allowing her time to figure out a proper response. It was really stressful for her. My wife panicked. I pulled her aside in the hallway outside the hospital room and explained to her that her grandmother was fine, but her responses that seemed to indicate she was uncomfortable or in pain were not due to actual pain; it was an emotional response after her granddaughter (the only family she has left and really trusts) told her that she'd had a stroke.

After explaining that it was emotional, not physical (in the strictest sense), my wife handled the situation differently, and we began to see that her grandmother was more "with us" than we gave her credit for. Her sister was already talking to hospital staff about making nursing home arrangements.

Within a few short weeks, she's made amazing strides in recovering a lot of her brain function, though occasionally (usually in the morning) she still suffers from a lot of confusion. However, she is perfectly aware WHY she's confused and understands that things are less what they seemed than before.

If there is no underlying CAUSE for consciousness, if the brain, peripheral nervous system, and physical body are the sole governing forces of our existence, then we might just as well start digging the grandmother's grave NOW and get it over with. But if there IS a cause beyond the physical, there's no reason to give up yet.



Awesomelyglorious
Veteran
Veteran

User avatar

Joined: 17 Dec 2005
Gender: Male
Posts: 13,157
Location: Omnipresent

05 Jun 2010, 9:35 am

AngelRho wrote:
I think that the physical and spiritual are linked. There's no doubt about that. However, most (if not all) religions operate on the assumption that the soul/sense of self/consciousness/spirit/ghost/identity/whatever is able to survive physical death.

Right, and this is a reason to reject a lot of them.

Quote:
Sure, one's perspective is affected by natural physical effects, such as drugs, physical trauma, and so on. But that doesn't change the underlying PERSON responsible for the physical body.

The problem is that if those don't, then what counts? We can suppress violent urges with the right chemicals, or right incision. We can deny a person themselves if we hurt their brain enough. It is possible to divide the brain in two and have one side be a theist and the other side be atheist. Cancer in the right part of the brain can remove all will to do anything. As it stands, neurologists hold that human behavior emerges from the brain with good reason, and if human behavior emerges from that, then how *can* we point to the "underlying PERSON" at ALL!

Quote:
If there is no underlying CAUSE for consciousness, if the brain, peripheral nervous system, and physical body are the sole governing forces of our existence, then we might just as well start digging the grandmother's grave NOW and get it over with. But if there IS a cause beyond the physical, there's no reason to give up yet.

Your line of reasoning makes no sense. Even further, given that the major way to recover from a stroke is to refigure out how to exploit existing neural connections to attain the previous level of functioning, I see no reason why something that stimulates a different part couldn't have even significantly different responses. Human beings stimulate themselves much of the time, such as by talking to themselves. When we talk to ourselves we think better, but y'know, this doesn't prove there is a spirit, but it does make sense if stimulating different parts of the brain improves our thinking.



AngelRho
Veteran
Veteran

User avatar

Joined: 4 Jan 2008
Age: 45
Gender: Male
Posts: 9,366
Location: The Landmass between N.O. and Mobile

05 Jun 2010, 10:07 am

Awesomelyglorious wrote:
AngelRho wrote:
I think that the physical and spiritual are linked. There's no doubt about that. However, most (if not all) religions operate on the assumption that the soul/sense of self/consciousness/spirit/ghost/identity/whatever is able to survive physical death.

Right, and this is a reason to reject a lot of them.

Quote:
Sure, one's perspective is affected by natural physical effects, such as drugs, physical trauma, and so on. But that doesn't change the underlying PERSON responsible for the physical body.

The problem is that if those don't, then what counts? We can suppress violent urges with the right chemicals, or right incision. We can deny a person themselves if we hurt their brain enough. It is possible to divide the brain in two and have one side be a theist and the other side be atheist. Cancer in the right part of the brain can remove all will to do anything. As it stands, neurologists hold that human behavior emerges from the brain with good reason, and if human behavior emerges from that, then how *can* we point to the "underlying PERSON" at ALL!

Quote:
If there is no underlying CAUSE for consciousness, if the brain, peripheral nervous system, and physical body are the sole governing forces of our existence, then we might just as well start digging the grandmother's grave NOW and get it over with. But if there IS a cause beyond the physical, there's no reason to give up yet.

Your line of reasoning makes no sense. Even further, given that the major way to recover from a stroke is to refigure out how to exploit existing neural connections to attain the previous level of functioning, I see no reason why something that stimulates a different part couldn't have even significantly different responses. Human beings stimulate themselves much of the time, such as by talking to themselves. When we talk to ourselves we think better, but y'know, this doesn't prove there is a spirit, but it does make sense if stimulating different parts of the brain improves our thinking.


It makes perfect sense. I see the neural network as an interface, a physical bridge between the natural world and the spiritual. If something is wrong at the perceptual level, then it makes our view of reality unreliable and untrustworthy. We have to figure out, perhaps arbitrarily, what IS right or not. Likewise, if the output or feedback functions are affected, it's difficult to interact with the outside world. The "person" is still there, and one need not merely be a mindless slave to physical existence. The body, including the nervous system, is the servant of the will, not the other way around.

As to whether there is such thing as awareness, sense of self, spirit/soul, and so on, one need only consult common sense for evidence.



Awesomelyglorious
Veteran
Veteran

User avatar

Joined: 17 Dec 2005
Gender: Male
Posts: 13,157
Location: Omnipresent

05 Jun 2010, 10:21 am

AngelRho wrote:
It makes perfect sense. I see the neural network as an interface, a physical bridge between the natural world and the spiritual. If something is wrong at the perceptual level, then it makes our view of reality unreliable and untrustworthy. We have to figure out, perhaps arbitrarily, what IS right or not. Likewise, if the output or feedback functions are affected, it's difficult to interact with the outside world. The "person" is still there, and one need not merely be a mindless slave to physical existence. The body, including the nervous system, is the servant of the will, not the other way around.

As to whether there is such thing as awareness, sense of self, spirit/soul, and so on, one need only consult common sense for evidence.

Well, no it actually doesn't make sense. Your own explanation doesn't help. The "person" themselves is likely a mental fiction. Psychologist Paul Bloom in this essay: http://www.theatlantic.com/magazine/arc ... ural/7055/ talks about how alterable even the psychology can be, such that a such thing as a "person" makes very little sense of the brain. Bloom also relates this to conditions such as multiple personality disorder, which I would kind of think that your "spiritual person" idea would have a lot of difficulty explaining. In fact, I don't even think that "spiritual persons" are even reasonably credible at this point given the degree to which human activity can be altered by the brain. To say that there is a little man talking to our heads just sounds like an absurdity at this point.