this post was submitted on 02 Dec 2023
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Know what'll really bake your noodle? An MRI will show your brain firing to move your arm before your "higher" brain function sends the signal.
Your brain fires and then sends an executive summary to the homunculus behind your eyeballs saying, "Good job! 'You' moved your arm!" And you believe in free will?
You think that's air you're breathing now?
It's not even one brain, it's two chunks that function as one whole. Patients who have had a corpus callostomy (splitting the membrane connecting the hemispheres) can find one of their limbs going against what you're trying to do.
If you're getting dressed, for example, your left side may refuse if it doesn't like what you're wearing. It can do totally random things and sometimes people have to use their controlled hand to physically restrain the other.
They think the left half of the brain is responsible for speech and communication, so the right remains this silent observer under the thumb of the left when the connection is intact.
But it has its own will, even if you don't know it.