You've already seen the knitted brain, an anatomically accurate yarn sculpture of the brain by Karen Norberg? With a zipper at the corpus collosum. It's been featured in Science, Knitting Help, the Museum of Scientifically Accurate Fabric Brain Art and oodles of blogs over time.

Then there's this: data vis whiz Mark Dow rendered an MRI scan of the knitted brain. Fantastic. Click below, and here's the video link. Thanks Mark! He adds a P.S., "By the way, an obscure point of pride: The model for Marjorie Taylor's fabric brain piece 'Marjorie Taylor #1' at The Museum of [Scientifically Accurate] Fabric Brain Art is a sagital MRI slice of my very own brain. Lookin' good." Lookin' very good.