Sensory Pathways 1 - Pain PDF
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Cardiff University
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Summary
This document provides an overview of sensory pathways, focusing on the mechanisms of pain perception. It includes a summary table of different tracts and their functions.
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sensory pathways 1- pain 22 November 2024 09:04 **The 3 major functional sub-classes of adult DRG neurons**  Limb spatial awareness Touch and pressure  Pain **Several ascending fibre tracts within the spinal cord carry nociocept...
sensory pathways 1- pain 22 November 2024 09:04 **The 3 major functional sub-classes of adult DRG neurons**  Limb spatial awareness Touch and pressure  Pain **Several ascending fibre tracts within the spinal cord carry nocioceptive signals to the brain**   **Summary Table** **Tract** **Sensory Input** **Primary Destination** **Function** -------------------- -------------------------------- --------------------------------------------- ----------------------------------------------- Spinothalamic Pain, temperature, crude touch Thalamus → Cortex Conscious perception of pain and temperature. Spinoreticular Slow, dull pain Reticular formation → Cortex, Limbic system Arousal, emotional, and autonomic responses. Spinomesencephalic Nociceptive signals Periaqueductal gray, Superior colliculus Pain modulation and reflexive responses.     Holding/ rubbing painful area reduces pain perception, allows for response to other stimuli other than pain 
