Scientists at the Chalmers University of Technology have published a paper that offers up a promising new theory -- one that he terms 'stochastic entanglement'. It proposes that after an amputation, neural circuitry related to the missing limb loses its role and becomes susceptible to entanglement with other neural networks -- in this case, the network responsible for pain perception. Through a principle known as 'Hebb's Law': 'neurons that fire together, wire together' neurons in the sensorimotor and pain perception networks become entangled, resulting in phantom limb pain. The new theory also explains why not all amputees suffer from the condition- the randomness, or stochasticity, means that simultaneous firing may not occur, and become linked, in all patients