Substantia nigra pars reticulata

Definition

The substantia nigra pars reticulata is a major component of the substantia nigra, located in the midbrain, which plays a crucial role in regulating movements and affecting various brain functions related to reward and addiction. It acts as an output nucleus of the basal ganglia, sending inhibitory signals primarily to the thalamus.

Related terms

Basal Ganglia:

A group of nuclei in the brain associated with control of voluntary motor movements, procedural learning, routine behaviors or habits (habit learning), emotion, and eye movements.

Dopamine:

A neurotransmitter produced in several areas of the brain, including the substantia nigra, playing a pivotal role in sending messages related to reward-motivated behavior and movement regulation.

Thalamus:

A large mass of gray matter deeply situated in the forebrain that relays sensory signals to the cerebral cortex and regulates consciousness, sleep, and alertness