Split-Brain Patients and the Puzzle of a Unified Mind

The brain is built in two halves — so why does consciousness feel like one seamless experience? MIT Press shares an excerpt from neuroscientist Christof Koch's book "Consciousness" that uses split-brain patients, whose hemispheres are surgically disconnected, to probe what actually makes a mind feel unified — a question that keeps resurfacing in debates over whether machines could ever have one.

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