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2003•Humana Press eBooksOpen access

Basal Ganglia Circuitry and Synaptic Connectivity

Ali Charara, Mamadou Sidibé, Yoland Smith

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Abstract

The basal ganglia are several synaptically interconnected subcortical structures that play important roles in regulating various aspects of psychomotor behaviors, and are central to the pathophysiology of common human movement disorders such as Parkinson’s and Huntington’s diseases (PD/HD). These structures classically include: 1) the striatum, which comprises the caudate nucleus (CD), putamen (PUT), and nucleus accumbens (Acc); 2) the globus pallidus, which includes the external (GPe; globus pallidus in nonprimates) and internal (GPi; entopeduncular nucleus [EPN] in nonprimates) segments; 3) the subthalamic nucleus (STN); and 4) the substantia nigra, which comprises the pars compacta (SNc) and pars reticulata (SNr) (Fig. 1).

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What this paper is about

The basal ganglia are several synaptically interconnected subcortical structures that play important roles in regulating various aspects of psychomotor behaviors, and are central to the pathophysiology of common human movement disorders such as Parkinson’s and Huntington’s diseases (PD/HD). These structures classically include: 1) the striatum, which comprises the caudate nucleus (CD), putamen (PUT), and nucleus accumbens (Acc); 2) the globus pallidus, which includes the external (GPe; globus pallidus in nonprimates) and internal (GPi; entopeduncular nucleus [EPN] in nonprimates) segments; 3) the subthalamic nucleus (STN); and 4) the substantia nigra, which comprises the pars compacta (SNc) and pars reticulata (SNr) (Fig. 1).

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Available abstract

The basal ganglia are several synaptically interconnected subcortical structures that play important roles in regulating various aspects of psychomotor behaviors, and are central to the pathophysiology of common human movement disorders such as Parkinson’s and Huntington’s diseases (PD/HD). These structures classically include: 1) the striatum, which comprises the caudate nucleus (CD), putamen (PUT), and nucleus accumbens (Acc); 2) the globus pallidus, which includes the external (GPe; globus pallidus in nonprimates) and internal (GPi; entopeduncular nucleus [EPN] in nonprimates) segments; 3) the subthalamic nucleus (STN); and 4) the substantia nigra, which comprises the pars compacta (SNc) and pars reticulata (SNr) (Fig. 1).

Key concepts: Globus pallidus, Subthalamic nucleus, Basal ganglia, Putamen, Pars compacta, Neuroscience, Substantia nigra, Pars reticulata

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