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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 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 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. [ 21 ] [ 22 ] The caudate has three primary regions of connectivity, with the head of the caudate demonstrating connectivity to the prefrontal cortex, cingulate cortex and ...
Part of the human brain, the basal forebrain structures are located in the forebrain to the front of and below the striatum.They include the ventral basal ganglia (including nucleus accumbens and ventral pallidum), nucleus basalis, diagonal band of Broca, substantia innominata, and the medial septal nucleus.
The islands of Calleja are specifically located within the ventral and medial lining of the ventral striatum in the brain, meaning that they lie towards the front and middle of this region within the temporal lobe. The insula magna, or the major island, of these complexes is located in the medial border of the nucleus accumbens.
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 ansa lenticularis is composed of fibers that pass from the ventral aspect of the globus pallidus and sweep around the posterior limb of the internal capsule. They connect with the fibers of the lenticular fasciculus in the field H of Forel to form the thalamic fasciculus .
The ventral striatum consists of the nucleus accumbens and the olfactory tubercle whereas the dorsal striatum consists of the caudate nucleus and the putamen. The putamen and the globus pallidus lie separated from the lateral ventricles and thalamus by the internal capsule , whereas the caudate nucleus stretches around and abuts the lateral ...