Language: The Control of Perception by Joel B. Judd presents a theory for the brain-language connection using Powers Hierarchical Perceptual Control Theory (HPCT). https://livingcontrolsystems.com/festschrift/judd.html

Excerpt:”Powers’ insight was to emphasize the role of behavior in perceptual control. Likewise, the key starting point for linguistics is to observe that language is just as purposeful as other behaviors. One might argue it is the purposeful behavior, for it is quintessentially human. Language forms the basis for most of our complex interactions with family, friends, colleagues and others. It allows for the possibility of resolving disputes and conflicts without resorting to violence. Although Coulmas’ statement refers primarily to the way languages change over time…”