The Thalamostriatal Projection System in Rodents
The thalamostriatal projection arises principally from the intralaminar nuclei and, less abundantly from the midline nuclei and certain specific relay or association nuclei, such as the ventral anterior, ventral lateral, lateral posterior, mediodorsal and pulvinar (Beckstead, 1984; Royce, 1987; Groenewegen, 1994). Among the intralaminar nuclei, the centromedian and parafascicular (CM/Pf) complex is the most prominent source of input to the striatum and information on the organization of the thalamostriatal projection derives largely from studies of the efferent projections of this complex (Royce, 1987; Sadikot et al., 1992). Thalamostriatal fibers are topographically organized, terminate in a patchy manner, make asymmetric synapses principally upon distal parts of dendrites of medium spiny projection neurons, and most likely use glutamate as excitatory transmitter (see review by Parent and Hazrati, 1995).
KeywordsGlobus Pallidus Thalamic Nucleus Subthalamic Nucleus Thalamic Neuron Thalamic Reticular Nucleus
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