๐ง Your Brain Starts Making Decisions Way Earlier Than Scientists Ever Realized
A new study from the University of Illinois Urbana-Champaign, published in PNAS, flips the classic model of how we make choices: decision signals show up in the primary somatosensory cortex โ the brain's very first relay for touch and movement โ not just in high-level frontal regions. Higher brain areas are looping feedback back down almost immediately, rather than waiting for information to travel all the way up a hierarchy. The finding also challenges the core assumption behind most AI architectures. Does this mean we've been modeling intelligence wrong from the start?
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