Page 340 - Color_Atlas_of_Physiology_5th_Ed._-_A._Despopoulos_2003
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D.  Basal ganglia: afferent and  E.  Centers, tracts and afferents for
                efferent tracts              postural motor function
                                               Motor cortex
                                            Cerebellum  Basal
                                                    ganglia

                                       Labyrinth              Proprio-
                                                               ceptors
                                      Information              of neck
                                      on head
                    Efferents of      position             Information
                    motor cortex      and movement         about head
                                                           and trunk
                                                           angle
           Motor                          Red                          Motor System II
           thalamus                       nucleus
                                       1
                          Glutamate                         Mes-
                                                            encephalon
                           Striatum    Reticular
                                       formation
                Globus pallidum (GP)                                   Plate 12.9
                 Pars  Pars                                    Pons
                 interna externa
                 (GPi)  (GPe)  GABA/SP
                 GABA           D 1     Vestibular
                                        nuclei              Medulla
                                                            oblongata
                            GABA/Enk.  D 2


                  Glu  Subthalamic                      Spinal cord
                       nucleus     Failure leads to parkinsonism  Feedback
                                                             from
                   GABA       DOPA    Rubrospinal 2       spinal cord

         Superior    SNr              tract                  Medial
        colliculus       SNc          Lateral                reticulo-
                                      reticulo-              spinal tract
                                      spinal tract
                    Substantia nigra  GABA/SP
                       (SN)                                  Lateral
                                                             vestibulo-
                  Basal ganglia                              spinal tract
             To
           brain stem
                                      Activation  Inhibition  Inhibition  Activation


                     Inhibition  Excitation
                                       Flexors      Extensors         327
                         (In parts after Delong)
       Despopoulos, Color Atlas of Physiology © 2003 Thieme
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