Vocal Tract Morphology in Inhaling Singing: An MRI-Based Study

Area of Science:

• Vocal pedagogy
• Speech and hearing science
• Anatomy

Background:

• Inhaling singing is a new singing method using inspiratory airflow.
• This technique's anatomical effects on the vocal tract are not well understood.

Purpose of the Study:

• To describe anatomical differences in the vocal tract during inhaling singing compared to traditional expiratory singing.
• To investigate potential alterations in the oral cavity and subglottal region.

Main Methods:

• A prospective study involving a professional singer performing vocal exercises.
• Magnetic resonance imaging (MRI) was used to assess vocal tract anatomy during inhaling singing.

Main Results:

• No statistical difference in vocal tract volume above the glottis.
• Significant changes observed in tongue configuration, epiglottis position, floor of mouth length, and teeth distance.
• Subglottal region showed statistically significant changes.

Conclusions:

• Subglottal narrowing is likely due to suction forces inherent in inhaling singing.
• Observed anatomical changes may indicate a valve-like function for air intake and resonance regulation.