Claude codes a sentence traveling through a brain

Claude built an interactive model of the human brain from scratch. It sculpts every fold of the cortex in code, then follows one sentence, "Could you pass the salt?", as it moves through: the brainstem at 5 milliseconds, the auditory cortex at 20, meaning at 400, and finally the frontal lobe deciding what to do about it. All live in the browser, with no scans, models, or downloaded assets. The timings come from published EEG, MEG and intracranial recordings, slowed about a hundredfold so you can watch it happen.