E.g., when I was in grad school for neuroscience, I attended a multimodal sensory symposium where I learned that huge numbers of neurons in primary sensory cortices (V1, A1, etc) responded to stimuli from other senses. E.g., 20% of your primary visual neurons fire when you get auditory stimuli.
One would assume, especially with the measurable loss in gray matter, that these networks are being destroyed and thus couldn't be reconnected even if stimulated to do so.
But perhaps pruning isn't such a binary process and it is these damaged -- but not destroyed -- networks which cause such severe dysfunction.
I'm excited and grateful to the brilliant minds which give hope to so many. A+, would science again.
Maybe that is in part what is happening anyway? Or is there evidence to show that the section of the brain becomes under-utilised. (no I didn't RTFA; will get right on it!)
Right. New neurons, axons, synapses, and more are constantly being generated in the brain (though, perhaps not under certain conditions).
It seems unlikely that any area of the brain would be unconnected, or at least, unconnected for very long.
"I found it easier than many to accept the epistemological notions of the world internal and external as dependent concepts enforced by ignorance and perceptual challenges."
Then, if someone chooses to be under the influence of a drug that enables new pathways to form (pot, psychedelics etc), this "dark" network can potentially be reconnected. The emotional response to this connection (good or bad) strengthens this "bridge" connection, leaving it connected when the influence of the drug wears off. Now the person has a faulty pruned network as part of their normal day to day network. Crap.
The trick from here is to reinforce the normal network and ignore signals from the faulty network until the bridge path's significance subsides enough to not enter day to day functioning.