Scientists have studied the main source of serotonin in the brain -- the dorsal raphe nucleus (DRN). By studying how activating the brain's 'serotonin center' affects awake animals for the first time, ...

Basal ganglia regions are located in the midbrain. Source: CLIPAREA l Custom media/Shutterstock Stuttering during childhood is a relatively common occurrence. Roughly one in 20 kids (5 percent) go ...

The substantia nigra is a motor nucleus located in the basal ganglia of the midbrain. This brain structure contributes to the body's cognitive and motor functions by sending signals to initiate or ...

Athetosis refers to the slow, involuntary, and writhing movements of the limbs, face, neck, tongue, and other muscle groups. The fingers are also affected, with their flexing happening separately and ...

SNr neurons in the midbrain send precise signals to control movement. Their activity determines which movements actions are initiated or inhibited. Neurons deep in the brain not only help to initiate ...