Those same brain areas even light up in response to emotional rejection. Eagleman also shows how new technologies have revealed the reach and limits of human empathy, noting that seeing others in physical pain lights up the same neurons activated by experiencing physical pain directly%E2%80%94though they light up less brightly when the observed victims are from a different social group. He addresses how brains rewire themselves in response to practice and discusses devices that help the brain regain damaged functions such as vision and hearing. Much of Eagleman's work covers scientists' ever-increasing appreciation of human brain plasticity. Neuroscientist and novelist Eagleman (Incognito: The Secret Lives of the Brain) reports on many big, recent neuroscience developments in this deceptively simple look at the universe's most complex known object: the human brain.
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