Apparently Neurophysics is the branch of medical physics concerned with using physics techniques to study the properties and behaviour of the central nervous system (i.e. the brain and spinal cord).
Not exactly a quantum mechanics question but anyways you should concentrate your education on the sciences, particularly biology with humanitarian electives. You should aim for a medical profession and incrementally specialize in the neuro related subjects the higher you achieve.
1. Matter & gravitation (including general relativity) 2. Mechanics - force, acceleration, velocity, momentum, linetic energy, etc. 3. Electricity & magnetism. 4. Quantum mechanics 5. Thermodynamics 6. Fluid mechanics 7. Nuclear particle physics 8. Solid state physics 9. Special Relativity theory Cutting it down to just five branches is actually rather silly