Breckenridge, CO. Online Offers. Established in 1859, the historic town of Breckenridge is a home rule municipality that is the county seat of Summit County, Colorado, United States. As of the 2010 Census, the town had a population of 4,540. The town also has many part-time residents, as many people have vacation homes in the area. Breckenridge is also a popular ski resort during the winter months, servicing multi-difficulty ski slopes on the Rocky Mountains.
substantia nigra - a layer of deeply pigmented grey matter in the midbrain; associated with the striate body; is involved in metabolic disturbances associated with Parkinson's disease and with Huntington's disease. locus niger, nucleus niger. neural structure - a structure that is part of the nervous system.
GABAergic control of substantia nigra dopaminergic. neurons. James M. Tepper and Christian R. Lee. Center for Molecular and Behavioral Neuroscience, Rutgers University, 197 University Avenue, Newark, NJ 07102, USA. Abstract: At least 70% of the afferents to substantia nigra dopaminergic neurons are GABAergic. The vast majority of these arise from the neostriatum, the external globus pallidus and the substantia nigra pars reticulata. Nigral dopaminergic neurons express both GABA A and GABA B receptors, and are inhibited by local application of GABA A or GABA B agonists in vivo and in vitro.