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. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: Clin Exp Allergy. 2011 Jun 6;42(1):8–19. doi: 10.1111/j.1365-2222.2011.03791.x

Figure 2.

Figure 2

Diagram of input to the spinal thalamic tract (STT) from cutaneous sensory nerve fibers. Cross-sections of the brain, spinal cord, and skin indicate the origin of sensory input from the skin to the spinal cord. The spinal thalamic tract is indicated by the hatched line projecting from the dorsal horn of the spinal cord to the thalamus in the brain. Studies in both humans and experimental animals have demonstrated that both C- and Aδ-fibers transduce itch sensation (see text). DRG = dorsal root ganglion, STT = spinal thalamic tract, III = third ventricle.