Glottic dimensions in healthy men and women
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Scale resolving simulations of the effect of glottis motion and the laryngeal jet on flow dynamics during respiration
2024, Computer Methods and Programs in BiomedicineUnderstanding the total airway response to exercise: current perspectives and future challenges
2019, Current Opinion in PhysiologyCitation Excerpt :Although vocalisation and airway protection are considered the main functions of this multi-purpose organ, its valve-type structure represents a considerable flow-limiting point in the airway tract. In healthy individuals, the glottic opening has a smaller cross-sectional area than both the hypopharynx and trachea (Figure 2) [12]. Thus, in situations of heightened VE the larynx effectively becomes an airflow ‘choke-point’, increasingly exposed to the Venturi effect.
Realistic glottal motion and airflow rate during human breathing
2015, Medical Engineering and PhysicsCitation Excerpt :In the followings, if X is a function of time t, Xmax refers to the maximum value of X over duration t. However, our results are in agreement with previous studies based on the acoustic reflection [40–42] or MRI technique [43]. In particular, D'Urzo et al. [40] used both acoustic reflection and CT methods to measure glottal area of 11 subjects.
Normative Standards for Vocal Tract Dimensions by Race as Measured by Acoustic Pharyngometry
2006, Journal of VoiceCitation Excerpt :It uses acoustic reflected signals to provide graphical representations of the area-distance curve representing the lumen above the glottis. This technology has often served to test the nasal airway,7,23 pharyngeal cross-sectional area,24,25 glottic dimension,26 upper airway geometry,27–31 central airway geometry,32 endotracheal tube positioning,33 and pharyngeal anatomy in sleep apnea patients.2,34 AR technology can accurately depict area and volume changes in the human vocal tract, and it has been validated for its accuracy with CT scan3,5,35 and MRI.7,22,36
Effects of glottis motion on airflow and energy expenditure in a human upper airway model
2018, European Journal of Mechanics, B/Fluids