Neuroscience is the scientific study of the nervous system. It combines physiology, anatomy, molecular biology, developmental biology, cytology, mathematical modeling, and psychology to understand the fundamental and emergent properties of neurons and neural circuits. Neuroscience is a challenging major, but it's challenging in a particular way, and there are other ways in which it is easier than some hard sciences. The core neuroscience classes tend to have a massive amount of memorization and terminology.