What should be modeled if a patient reduces oral opening when gliding down in pitch?

Modeling a wider mouth opening is essential in this scenario because it facilitates better vocal production and resonance, especially when navigating changes in pitch. When a patient reduces their oral opening during pitch glides, it can lead to restricted vocal quality and limited pitch range. By demonstrating a wider mouth opening, the patient can visually and physically understand the importance of adequate oral posture for effective voice production. This modeling promotes greater vocal freedom and can help the patient achieve a more expansive sound, as an open mouth allows for more airflow and sound resonance.

In contrast, encouraging a decrease in vocal volume would likely lead to further constriction and may not address the underlying issue of oral opening. Changing the pitch of the exercise can also be counterproductive if the patient is already struggling with their oral posture. Asking them to close their mouth more would reinforce the problem rather than help to alleviate it, potentially leading to additional vocal challenges.