This is done via a bottom-up approach through an understanding of the nervous system at a molecular and cellular level, but also via a top-down approach through behavioural neuropsychology. Neuroscientists have to push technologies to the limit to study the nature neural function by recording from individual nerve cells and even from single molecules to understand diseases. Neuroscience research aims to understand diseases such as stroke, multiple sclerosis, Alzheimer's, Parkinson's and Huntington's diseases. It can also include work on the optic nerves, cardiac function, sense of smell, difficulty in swallowing, weakness in the muscles and other diseases and health problems since many of these have a neural basis. In your fourth year you will undertake a year's industrial placement and graduate after five years with an MSci (an undergraduate Masters degree) instead of a BSc. Placements vary considerably but, in general terms, you will have the opportunity to do a placement in an industrial, commercial or research environment where you will be able to develop a breadth of practical experience to complement your degree programme and enhance your employability.