Serotonin is an important neurotransmitter in the brain that helps regulate mood, emotions, stress response, and anxiety. Serotonin-producing neurons mainly originate from the Raphe Nucleus and send signals to different brain regions involved in emotional control, including the neocortex, hypothalamus, thalamus, and basal ganglia. In anxiety disorders, abnormal serotonin signaling may contribute to increased worry, nervousness, and emotional imbalance. Buspirone works by interacting with seroto