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Published online by Cambridge University Press: 02 October 2003
This commentary presents indirect support for Corballis's claim that language evolved out of a gestural system in our evolutionary past. Specifically, it presents behavioral and neurological evidence that present-day speech and gesture continue to be tightly integrated in language production and comprehension.
1. The N400 effect reflects the unconscious neural integration of semantic information during language comprehension (Kutas & Hillyard 1980).