The Nucleus Accumbens (NAc) is an area of the brain that is part of the Basal Ganglia system. It is divided into two subregions: the core and the shell. As you can imagine, the core region is nested within the shell. The NAc is primarily composed of neurons that contain GABA, the primary inhibitory neurotransmitter. These neurons make up ~95% of NAc neurons and contain … Continue reading Breaking Gad