Any sensory information is transmitted to specific sensory areas in the brain cortex where its evaluation begins. It is the interpretation of the brain that makes sense of the sensory input. Each receptor has its cortical representation. A sensory receptor, its cortical sensory area and the afferent sensory neurons that connect them form a somatosensory pathway. A sensory receptor and its sensory cortical area collaborate and are part of our evaluating system.
From the receptors in the periphery of somatosensory system[iii] the stimulus travels along the neurons of the spinal cord and arrives at the brain. What happens to skin becomes reality only after it is processed by the cortex. We need receptors, their cortical areas and neurons connecting them to form our perception of reality. A perfect circumcision would remove the three of them. However, only the removal of the foreskin receptors is technically possible. So let us leave the perfect circumcision to the futuristic medicine.
The cortical areas are interconnected. They exchange information and transmit it to other parts of the brain for further interpretation. Only the full set of somatosensory pathways provides us with the adequate big picture of what we experience.
Well, what happens with a cortical sensory area when it is deprived of sensory input? Does it simply remain idle? Does circumcision leave an area of informational vacuum in the brain? This is quite unlikely because nature is economical. A useless structure either adapts to the new conditions or degenerates and is recycled. Neurons are tightly intertwined in the brain. It seems difficult for them to stay isolated and inoperative. Nobody knows exactly what goes on in the brain but now science has disclosed enough to help our deduction.