The therapist was checking things like swallowing and speech production and so forth.

治疗师正在检查吞咽和言语产生等方面的事情。

For example, Broca's Area is a region of the brain usually in the left frontal lobe that plays a major role in speech production.

例如，布罗卡区是大脑的一个区域，通常位于左额叶，在语音生成中起着主要作用。

The researchers reason that speech may be more constrained to the left hemisphere because it contains specialized circuits dedicated to the motor control of speech production.

研究人员推断， 言语可能更受左半球的限制， 因为它包含专门的专用电路到言语产生的运动控制。

With stutterers, he thinks, a specific group of brain cells involved in speech production is, for an unknown reason, uniquely sensitive to the enzymatic glitch— perhaps producing the patterns seen by Dr De Nil in his brain scanners.

他认为，对口吃者来说，参与话语生成的一组特定的脑细胞，不明原因的对酶毛刺有一种独特的敏感——也许将德∙尼尔博士在脑部扫描中看到的结构生成出来能够解释这个现象。