In an injured brain, Yuri believes, the spike flow in the sensory-motor loops that go from the body to the brain and back is unbalanced, desynchronized, disrupted, or too low. Instead of getting, say, a burst of a hundred spikes in 100 milliseconds in order to move, a muscle will get only ten spikes in that time, so it can’t contract properly, because its contraction becomes slow and weak. Before
