Biological Psychology

Biological Psychology focuses on the relationship between behaviour and the physical system, including the brain and the rest of the nervous system, the immune system, and genetics. Biological psychologists often collaborate with neuroscientists,
zoologists, and anthropologists.

Neuropsychology has emerged as a field of research where psychologists and neuroscientists are working together.

Researchers are studying the role of neurotransmitters or chemical substances
which are responsible for neural communication in different areas of the brain
and therefore in associated mental functions.

They do their research on people with normal functioning brain as well as on people with damaged brain by following advanced technologies like EEG, PET and fMRI, etc.
about which you will study later.