Pallidum
Pallidum
Pallidum (pronunciation: /pəˈlɪdəm/) is a term used in neuroanatomy to refer to a specific region of the brain. It is a part of the basal ganglia, a group of nuclei in the brain associated with a variety of functions including control of voluntary motor movements, procedural learning, habit learning, eye movements, cognition, and emotion.
Etymology
The term "pallidum" is derived from the Latin word "pallidus", which means "pale". This is in reference to the pale appearance of the pallidum in comparison to the surrounding brain tissue.
Structure
The pallidum is divided into two main parts: the globus pallidus and the ventral pallidum. The globus pallidus itself is further divided into two segments: the globus pallidus externus (GPe) and the globus pallidus internus (GPi). The ventral pallidum is located beneath the globus pallidus and is involved in the reward system of the brain.
Function
The pallidum plays a crucial role in the regulation of movements. It receives signals from the striatum, another part of the basal ganglia, and sends signals to the thalamus, which then relays these signals to the cortex. This pathway is involved in the initiation and control of voluntary movements.
Related Terms
External links
- Medical encyclopedia article on Pallidum
- Wikipedia's article - Pallidum
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