Neuroscience 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.
In towards motivation the dopamine system is primarily active. Dopamine determines how the brain processes reward and hence what is motivating to pursue. ... There is a system of brain regions that are important: one is the nucleus accumbens, another is the Striatum and the third is the ventral medial prefrontal cortex.