lightly, on 31 October 2012 - 06:30 PM, said:
Anyone have a brief explanation of what thoughts / images are made of? Seriously. Are thoughts and mental images thought (hehe) to be , in themselves, physical?
If so.. what are they made of?
(sorry if this is an idiotic question that everyone else already knows the answer to.. i'd just like to hear some of those answers please)
This is an interesting question, is what we perceive merely chemical and electrical signals within the brain? This seems doubtful but consider that the brain does not see an object as it is, it splits what the eye sees into many different components (around 12 if I remember) such as contrast, shading, outline, color and recombines them into an image, and it has to flip these images as well since the image that strikes the back of the eye appears inverted. And we see only in a narrow range of radiation; visible light. Many other forms of radiation are bouncing off everyday objects but we are blind to them. Images in the brain are likely recombined memories of imagines seen by the eye, that is we have a frame of reference of familiar objects around us that the mind uses as a template for the images, we "see" in our mind. I have heard that people who lose their eyesight eventually lose this ability to form these images which must be frightening and terrible if once you could remember the face of a loved one but after a period of blindness that is lost.
Memories are apparently created as nodes on our brain's nerve fibers. If you do something once or only a few times a bump appears on a nerve fiber and that is (some think) the stored memory. Now if you never do that again, this "bump" is reabsorbed. But if you do something often enough like memorizing a piece of music, that node becomes permanent. You may not repeat that action for years, but it quickly "comes back to you" when you try, you don't have to learn it from scratch. This may be why the elderly can remember past events so clearly, but recent tasks they have difficulty with; at some point the brain has difficulty forming or holding onto new nodes, so we no longer form memories, but the old ones are hard wired.
There have been whole schools of thought that the body is an illusion and all is mind, and others who think that all is body; the mind is only the result of chemical signals within the brain. I tend to believe in a real 3-dimensional universe as far as what we are reacting in and to, but who knows, perhaps we exist only in the mind of God?