Neuroscience

A working understanding of how the brain actually works at the level of mechanism — neurons firing, chemicals crossing synapses, regions specializing, circuits adapting. The trunk takes you from a single cell's electrical signal up through brain anatomy, sensation, movement, plasticity, memory, sleep, and emotion; clusters dive into molecular signaling, the neurochemical systems, sensory neuroscience, plasticity and repair, the cognitive brain, the diseased brain, and the tools that let us see any of it.