%0 Journal Article %T Orexin Directly Enhances the Excitability of Globus Pallidus Internus Neurons in Rat by Co-activating OX1 and OX2 Receptors %A Bin Li %A He-Ren Gao %A Jian-Jun Wang %A Jing-Ning Zhu %A Qian-Xing Zhuang %A Xiao-Yang Zhang %A Yi-Ting Zhong %A Yong-Xiao Zhang %A Zhang-Peng Chen %J Archive of "Neuroscience Bulletin". %D 2017 %R 10.1007/s12264-017-0127-0 %X Orexin-A excites two types of GPi neurons. A Diagram of rat brain in sagittal view showing the location of the GPi between 1.92 and 2.76 mm from bregma. B A coronal brain slice containing the GPi. C, D Electrophysiological identification of Types I and II neurons in the GPi and the effect of orexin-A. The diameters of both types were >20 ¦Ìm (arrowheads). Type I neurons showed a voltage sag during injection of a negative current step, whereas Type II neurons (n = 8, 10.5%) showed little or none. GPi, internal globus pallidus; ic, internal capsule %K Orexin %K OX1 receptor %K OX2 receptor %K Globus pallidus internus %K Basal ganglia %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5567558/