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CRiedinger_somatosensory_pathways

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Christiane Riedinger
Christiane Riedinger

Overview of the different somatosensory pathways (not complete!).

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C. Riedinger Overview of Somatosensory Pathways 1* neurone 2* neurone 3* neurone pathway sensation cell body destination cell body decussation destination cell body destination spinal cord within a few thalamus thalamus dorsal root ipsilateral segments = spinothalamic pain and temperature spinal cord ventral post. ventral post. ganglion near level of IMMEDIATEL nucleus nucleus incoming nerve Y in spinal cord spinal cord brainstem thalamus as thalamus touch and dorsal root dorsal column dorsal column ipsilateral forming medial medial intralaminar somatosensory proprioception ganglion nuclei higher up lemniscus lemniscus nucleus cortex in post- brainstem brainstem thalamus thalamus central gyrus! pain and temperature, trigeminal trigeminal I medulla brainstem medulla ventral post. ventral post. face ganglion oblongata oblongata nucleus nucleus pons (as thalamus thalamus trigeminal trigeminal II touch, face pons brainstem trigemino- ventral post. ventral post. ganglion thalamic tract?) nucleus nucleus

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CRiedinger_somatosensory_pathways

  • 1. C. Riedinger Overview of Somatosensory Pathways 1* neurone 2* neurone 3* neurone pathway sensation cell body destination cell body decussation destination cell body destination spinal cord within a few thalamus thalamus dorsal root ipsilateral segments = spinothalamic pain and temperature spinal cord ventral post. ventral post. ganglion near level of IMMEDIATEL nucleus nucleus incoming nerve Y in spinal cord spinal cord brainstem thalamus as thalamus touch and dorsal root dorsal column dorsal column ipsilateral forming medial medial intralaminar somatosensory proprioception ganglion nuclei higher up lemniscus lemniscus nucleus cortex in post- brainstem brainstem thalamus thalamus central gyrus! pain and temperature, trigeminal trigeminal I medulla brainstem medulla ventral post. ventral post. face ganglion oblongata oblongata nucleus nucleus pons (as thalamus thalamus trigeminal trigeminal II touch, face pons brainstem trigemino- ventral post. ventral post. ganglion thalamic tract?) nucleus nucleus