Human brain works in mysterious ways in unfathomable levels. A few of brain’s such activities include phantom limb pain, which is experienced by a person whose limbs were amputated and tactile hallucinations which make people feel a pain instilled on them when there are no such external stimuli. When a person feels a touch on his left hand when he was originally touched on his left leg, scientists call it a phantom sensation. This reaction of brain has left scientists in utter puzzlement. Studies were conducted to know the reason behind this. "We show that phantom sensations depend on three characteristics. The most important is the identity of the limb — whether we're dealing with a hand or a foot. This is why a touch on one hand is often perceived on the other hand," explains lead author Stephanie Badde. The other two factors contributing are;
- the side of the body — a person might think they sense touch in their right hand when, in fact, the touch occurred on their right foot
- the normal anatomical position of the limb (right or left)
Scientists say that these findings could drive us to the finding of how phantom pain is perceived by brain.