Spinocerebellum Connections Afferents:receives somatic sensory information via spinocerebellar tracts Efferents: ·Vermis projects to the fastigial nucleus→ vestibular nuclei and reticular formation vestibulospinal tract and reticulospinal tract-> motor neurons of anterior horn Intermediate zone projects to the interposed nuclei Contralateral red nucleus-rubrospinal tract-motor neurons of anterior horn Contralateral VL of thalamus -cerebral cortex coticospinal tract->motor neurons of anterior horn
Spinocerebellum Connections • Afferents: receives somatic sensory information via spinocerebellar tracts • Efferents: • Vermis projects to the fastigial nucleus → vestibular nuclei and reticular formation → vestibulospinal tract and reticulospinal tract → motor neurons of anterior horn • Intermediate zone projects to the interposed nuclei – Contralateral red nucleus → rubrospinal tract →motor neurons of anterior horn – Contralateral VL of thalamus →cerebral cortex→ coticospinal tract→motor neurons of anterior horn
cortical motor area ·Function: modulate the muscular ventrolateral nuclei of thalamus tension. red nucleus (magnocellular part) spinocerebellum intermedial nucleus fastigial reticular nucleus formation vestibular 扩 nucleus spinocerebellar tract rubrospinal lract vestibulospinal tract reticulospinal tract corticospinal tract. motor neuron of spinal anterior horn spinal ganglion
• Function: modulate the muscular tension