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Split Brain Does Not Lead to Split Consciousness

neurosciencenews.com

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Re: Split Brain Does Not Lead to Split Consciousness

#5

My knowledge of neurobiology is weak. Having received a full callosotomy, how are the hemispheres able to communicate even at 1 bit / s? Secondly, how is that estimate generated?

Fast google search provides us with an answer:

> After the operation the brain has much more difficulty sending messages between the hemispheres. Although the corpus callosum is the largest white matter tract connecting the hemispheres, some limited interhemispheric communication is still possible via the anterior commissure and posterior commissure.

Re: Split Brain Does Not Lead to Split Consciousness

#6

My knowledge of neurobiology is weak. Having received a full callosotomy, how are the hemispheres able to communicate even at 1 bit / s? Secondly, how is that estimate generated?

https://en.wikipedia.org/wiki/Corpus_callosotomy

"Although the corpus callosum is the largest white matter tract connecting the hemispheres, some limited interhemispheric communication is still possible via the anterior commissure and posterior commissure."

Re: Split Brain Does Not Lead to Split Consciousness

#7
How does a brain split operation work exactly? Do they put a barrier between the two halves? Otherwise, I would expect that signals could still propagate: cut two nerves, then push them together, and I can imagine that a signal can still pass through; if not always, then in a percentage of cases.

Re: Split Brain Does Not Lead to Split Consciousness

#8

My knowledge of neurobiology is weak. Having received a full callosotomy, how are the hemispheres able to communicate even at 1 bit / s? Secondly, how is that estimate generated?

Two people in the same room can communicate information at far more than 1 bit/s even without speaking, and they aren't even in the same body. I could imagine that receiving very similar inputs and observing reactions to the movements and other actions taken by the other side could also act as a high-rate channel of information.

Re: Split Brain Does Not Lead to Split Consciousness

#9
post #7

How does a brain split operation work exactly? Do they put a barrier between the two halves? Otherwise, I would expect that signals could still propagate: cut two nerves, then push them together, and I can imagine that a signal can still pass through; if not always, then in a percentage of cases.

[deleted]

Re: Split Brain Does Not Lead to Split Consciousness

#10
Take that, Sam Harris!

In "Waking Up: A Guide to Spirituality Without Religion" he wrote a bunch of silly stuff - thoroughly referenced with cherry-picked scientific articles - about the split brain. He went as far as estimating the amount of data passing through the corpus callosum when we don't even have a computational model for the brain.

It was almost as ridiculous as claiming that the self is an illusion because we can experience its apparent dissolution.

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