1、Broca's area is a region of the hominid brain with functions linked to speech production.

2、Worry, on the other hand, activates a region in the left frontal lobe that is linked to speech production.

3、The synthesis model is implemented with scattering process derived from reflection-type line analog of vocal tract system according to the acoustic model of speech production.

4、Neural activity in a region of the left frontal lobe, an area known to be involved in speech production, was higher in the depressed and worried-but-not-fearful subjects.