Sensations of the tongue travel to the nucleus of solitary tract (the area of the brain responsible for interpretation of taste bud information) via the glossopharyngeal nerve.
Sensory sensations of the tongue are delivered to the sensory strip (posterior to the frontal lobe) of the brain where it is interpreted and then the information (sensation) is sent to the motor strip of the brain (anterior to the parital lobe). Here a response is conducted and sent to the tongue through the glossopharyngeal nerve.
My hypothesis: What the electrodes placed on the tongue do is deliver a shock (stimulus) to the tongue in varying areas and varying strengths based on the color (tint/ shade) and distance of an object from the camera placed on the camera. What happens in the brain is that as a person learns to associate stimuli with colors, distances, sights, ect… the area in the brain responsible for taste interpretation develops further and its neurological pathways extend. The occipital area of the brain is also utilized. The occipital lobe, that has sat nearly dormant because of the lack of vision, is now rewired in correlation with the taste sensory area of the brain. As these two develop further together their functions (receiving information for sight) intertwine and a person is able to ‘see’ again. Another that happens is the person’s sense of taste and sensations in the tongue are increased because of the heightened function and neural wiring of the taste and vision sensory areas of the brain.
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