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The striatum (pl.: striata) or corpus striatum [5] is a cluster of interconnected nuclei that make up the largest structure of the subcortical basal ganglia. [6] The striatum is a critical component of the motor and reward systems; receives glutamatergic and dopaminergic inputs from different sources; and serves as the primary input to the rest of the basal ganglia.
The putamen is a structure in the forebrain. Along with the caudate nucleus it forms the dorsal striatum. The caudate and putamen contain the same types of neurons and circuits – many neuroanatomists consider the dorsal striatum to be a single structure, divided into two parts by a large fiber tract, the internal capsule, passing through the ...
executive functions; ADHD; addiction; schizophrenia; Nigrostriatal pathway: The nigrostriatal pathway transmits dopaminergic neurons from the zona compacta of the substantia nigra [8] to the caudate nucleus and putamen. The substantia nigra is located in the midbrain, while both the caudate nucleus and putamen are located in the dorsal striatum ...
The ventral striatum is believed to play a role in reward and other limbic functions. [20] The dorsal striatum is divided into the caudate and putamen by the internal capsule while the ventral striatum is composed of the nucleus accumbens and olfactory tubercle.
Striatum. Dorsal striatum (a.k.a. neostriatum) Putamen; Caudate nucleus; Ventral striatum. Nucleus accumbens; Olfactory tubercle; Globus pallidus (forms nucleus lentiformis with putamen) Ventral pallidum; Subthalamic nucleus; Basal forebrain. Anterior perforated substance; Substantia innominata; Nucleus basalis; Diagonal band of Broca; Septal ...
The striatum is one mass of grey matter that has two different parts, a ventral and a dorsal part. The dorsal striatum contains the caudate nucleus and the putamen, and the ventral striatum contains the nucleus accumbens and the olfactory tubercle. The internal capsule is seen as dividing the two parts of the dorsal striatum.
The substantia nigra is located in the ventral midbrain of each hemisphere. It has two distinct parts, the pars compacta (SNc) and the pars reticulata (SNr). The pars compacta contains dopaminergic neurons from the A9 cell group that forms the nigrostriatal pathway that, by supplying dopamine to the striatum, relays information to the basal ganglia.
The striatum is divided into a ventral striatum, and dorsal striatum, subdivisions that are based upon function and connections. The ventral striatum consists of the nucleus accumbens and the olfactory tubercle whereas the dorsal striatum consists of the caudate nucleus and the putamen.