Neuroanatomy, Nucleus Caudate
StatPearls(2021)
Abstract
The caudate nucleus (CN; plural “caudate nuclei”) is a paired, “C”-shaped subcortical structure which lies deep inside the brain near the thalamus. It plays a critical role in various higher neurological functions. Each caudate nucleus is composed of a large anterior head, a body, and a thin tail that wraps anteriorly such that the caudate nucleus head and tail can be visible in the same coronal cut. When combined with the putamen, the pair is referred to as the striatum and is often considered jointly in function. The striatum is the major input source for the basal ganglia, which also includes the globus pallidus, subthalamic nucleus, and substantia nigra. These deep brain structures together largely control voluntary skeletal movement. The caudate nucleus functions not only in planning the execution of movement, but also in learning, memory, reward, motivation, emotion, and romantic interaction. Input to the caudate nucleus travels from the cortex, mostly the ipsilateral frontal lobe. Efferent projections from the caudate nucleus travel to the hippocampus, globus pallidus, and thalamus. Research has implicated caudate nucleus dysfunction in several pathologies, including Huntington and Parkinson disease, various forms of dementia, ADHD, bipolar disorder, obsessive-compulsive disorder, and schizophrenia.
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Key words
neuroanatomy,nucleus
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