A year and a half ago, Scott Adams (yeah, the Dilbert guy) was diagnosed with Spasmodic Dysphonia, a neural disorder that shuts down the neural pathways between the speech centers and vocal cords. Because the brain is weird, it's a weird illness, with people able to sign, but not speak, or in Scott's case, able to do public speaking or to himself while alone, but not around family or friends (though he could sing to them). No one has ever gotten better from this disease.
Until now. Using his basic understanding of the way the brain works, a strong desire to get better, and a willingness to experiment, he found a backdoor to speech that is helping his brain reroute traffic.