"But a baby who has a defect in those brain stem circuits that use serotonin can't do that when challenged and they go on to die."

VOA: standard.2010.02.08

There seems to be no interesting difference between how the brain comes to acquire and use the spoken language versus a sign language.

似乎大脑在如何获得和使用口语语言,与如何获得和使用手语之间,不存在任何的差别

耶鲁公开课 - 心理学导论课程节选