Neuroscience
Neuroscience (or neurobiology) is the scientific study of the nervous system. It is a multidisciplinary branch of biology, that combines physiology, anatomy, molecular biology, developmental biology, cytology, mathematical modeling and psychology to understand the fundamental and emergent properties of neurons and neural circuits. The understanding of the biological basis of learning, memory, behavior, perception and consciousness has been defined as "the ultimate challenge of the biological sciences".
Psychology
Psychology is the science of behavior and mind, including conscious and unconscious phenomena, as well as feeling and thought. It is an academic discipline of immense scope and diverse interests that, when taken together, seek an understanding of the emergent properties of brains, and all the variety of epiphenomena they manifest. As a social science it aims to understand individuals and groups by establishing general principles and researching specific cases.
Neuroscience
There was another major phase of split-brain research where we studied the patients as a way of getting at the other questions very much alive in neuroscience, everything from questions about visual midline overlap to spatial attention and resource allocations. At this point the split-brain patients provided a way of examining cortical-subcortical relationships, and other matters.
Michael Gazzaniga (2001) (12 April 2011). "Interview with Michael Gazzaniga". Annals of the New York Academy of Science. DOI:10.1111/j.1749-6632.2011.05998.x.