Neuroplasticity: Old Brain, New Tricks

I hypothesize that the occipital lobe somehow is stimulated by the spot on the sensory cortex corresponding with the tongue. This probably happens by the movement of the tongue stimulating cortical areas in the motor cortex. The motor cortex then sends messages to the sensory cortex in the parietal lobes. Just as a person with normal vision activates the visual cortex by the action of looking at an object, a blind person can activate the visual cortex by voluntarily moving their tongue. The tongue moving links with neurons in their association area. If moving the tongue can enable a blind person to see, then the tongue's association area must be located in the occipital lobe, because this is the lobe that helps you see.
The signal travels through the motor cortex, sensory cortex, and occipital lobe via the interneurons. As the signals are rewired, they are transformed into a response, which, in this case, means vision.