Meet my friend Beth! She is a super talented high school biology teacher. While she enjoys all aspects of Biology, she especially loves neurobiology. Her previous research experience was in the field of neurobiology, in particular how cell signaling in neurons works. Therefore, to continue in my science-themed hats, I designed a neuron hat, complete with dendrites, a cell body, an axon, and synaptic terminals. I even included some signaling molecules for good measure.
The pattern can be found here at Ravelry (buy directly here) and here at Craftsy. I have included an easier chart that eliminates most of the long carries in the pattern as well as a chart for the pictured hat.