  Posture is an essential aspect of motor behavior, necessitating continuous
muscle activation to counteract gravity. It remains stable under perturbation,
aiding in maintaining bodily balance and enabling movement execution.
Similarities have been observed between gross body postures and speech
postures, such as those involving the jaw, tongue, and lips, which also exhibit
resilience to perturbations and assist in equilibrium and movement. Although
postural control is a recognized element of human movement and balance,
particularly in broader motor skills, it has not been adequately incorporated
into existing speech motor control models, which typically concentrate on the
gestures or motor commands associated with specific speech movements,
overlooking the influence of postural control and gravity. Here we introduce a
model that aligns speech posture and movement, using simulations to explore
whether speech posture within this framework mirrors the principles of bodily
postural control. Our findings indicate that, akin to body posture, speech
posture is also robust to perturbation and plays a significant role in
maintaining local segment balance and enhancing speech production.
