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Talking back

Map of Brain’s Speech Centers May Help “Locked-In” Patients Talk

Wilder Penfield’s famous homonculus map of the brain had a large area on one side capped by a gaping cartoon mouth labeled simply “vocalization.” During the 1930s,  Penfield stimulated that same area, but was unable to elicit any recognizable utterances. A group of researchers led by Edward F. Chang of the University of California San [...]

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