What in God's name am I? I don't mean what sort of animal. I'm quite certain I am human. But I mean, what is my personhood, my consciousness, my self-awareness, my attention? In short, what makes up my mind?
Am I my brain? If my brain were to be in somebody else, would I still be me? If my brain were sitting on a shelf (yet somehow kept alive and active), would I still be me?
I think, yes.
But what I can't wrap my brain around, is this: am I my brain, or do I inhabit my brain? All evidence seems to point to the idea that I merely am my brain. Yet, I don't believe it. They say that every psychological occurrence in my mind, every thought, is simultaneously a physiological event in the brain. Ok. But that doesn't explain me.
During brain surgeries, they have shown that when they stimulate a certain place in the sensory cortex of the brain, the person will feel a sensation corresponding with the place they stimulated. They might poke here, and the person will feel as if someone touched their hand. They might poke there, and the person will feel as if someone is tickling their toes.
I suppose then, that if the technology existed, a scenario like in The Matrix, is perfectly plausible. We could exist in a reality completely separate from reality by connecting our brains to the proper sensory inputs. Of course, we all know it will be the gaming industry who will invent it!
What if someday, then (I really believe this to be probable), we are all just brains sitting on a vast array of shelves, connected together, without the need for bodies, living in a real-as-reality virtual existence, where the discomforts of real-reality don't have to irritate us anymore, and we can make up any reality (or set of realities) we want? Who would need (or even want) the real world? Of course this has been the subject of science fiction novels for decades.
But my question is what exactly is sensation? I see the mechanism of sensation, but where is the point where the neurological message is received? Just because a neurological pathway is stimulated in my brain, where am I to receive that message? Light waves may enter my eye at a particular frequency, my retina will pick them up, and my optic nerve will send a signal to other nerves in my brain, but at some stage I experience color.
But where do the signals end up? What good is a message if there is no one to receive it? Is the neurological pathway transmitting data me? If a packet of binary information is sent across an Ethernet cable to a computer, the website is only rendered if that packet is received and interpreted, and eventually displayed in a web browser. What good is the cable sending signals to other cables? But all I see in the brain are the cables!
Am I the cables? Power cables being lit up with data, transmitting in circles? Who experiences the signals? Are the signals the experience? It's a complex pathway consisting of millions of nerves that activates and is flooded with electricity and neurotransmitters, and... then it stops. Who is on the receiving end of that message?
If the signal is the sensation, then do cables, computers and circuit boards sense?
Imagine I were to die. Ok. Now, say my brain was perfectly preserved. All brain activity has long ago ceased. Much later, one of those clever brain surgeons pokes something in my inactive sensory cortex, suddenly stimulating the sleeping neural pathway that would cause the feeling of my hand being touched. Now, if I am my brain, would I not feel that?! Even though I am not concious, even though I know nothing, would I not still experience that sensation?
If the message is the experience, then yes, in the dark timelessness of non-existence, I would indeed feel someone touch my hand!
But it makes no sense to me. How can the mere activation of neurological pathways cause me to sense anything? There must be a recipient of the messages, on the other side of the brain. I can only conclude that I inhabit my brain. How can the thing be self-aware? How can the cable feel?
This is a conundrum that has bothered me for many years, and I cannot properly articulate it with words. I've tried here, and I don't expect you to see what I see. How can I craft my words to stimulate the same neural pathways in your brain that have been stimulated in mine?
I feel trapped in here.
SPF
That's something I've thought about a lot as well though I have never bothered to articulate it as well as you have. Quite enjoyed it, thanks for posting.
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