A brainy night in Berkeley: If it’s Thursday, this must be the corpus callosum. Has anyone seen my homunculus?

For the inexperienced traveler, Aubrey Gilbert’s “whirlwind tour of your nervous system” blows past the hippocampus and cortex of the frontal lobes like a five-day package excursion through the great cities of Europe. Looking back, there’s no doubt it’s been a remarkable trip, but you’re unsure in which region of the brain you encountered Broca’s area, or the precise location of the olfactory bulb; your most vivid take-home memory is apt to be Gilbert’s admonition never, ever to order brains for lunch.