Andrew G Marshall, Manohar L Sharma ... Francis P McGlone
Pleasant touch perception in humans is unaffected by spinothalamic disruption indicating integrated spinal processing of hedonic and discriminative tactile inputs rather than privileged C-tactile-lamina I-spinothalamic projections.
The brain continues to represent individual fingers in primary somatosensory cortex decades after the amputation of a hand, indicating that cortical maps do not require ongoing sensory input from the body.
Human sensory neurons may not only bridge a critical gap between drug discovery and clinical trials, but force a re-evaluation of basic assumptions about the mechanisms controlling primary afferent excitability.