可交互的 3D 人脑图谱，追踪一句话在大脑中的传递

Build an interactive 3D atlas of the human brain for the browser. Generate the cortex procedurally in code, with sculpted folds, a cerebellum and brainstem, in warm pink tones, on a dark interface with serif headings. Let users drag to rotate and scroll to zoom, and click regions to highlight them in distinct colors with labels. Add a side panel listing stimuli such as hearing a sentence or seeing a familiar face; selecting one animates activity moving through the relevant regions in sequence, with a timeline showing milliseconds for each step and a short explanation of what each area does. Base the timings on published neuroscience findings. Deliver a self-contained web page, preferably with Three.js. Done means smooth orbit, readable panels, and activation that plays in the correct order.