Phonation Threshold Pressure Revisited: Effects of Intrinsic Laryngeal Muscle Activation

2021 ◽  
Author(s):  
Shaghauyegh S. Azar ◽  
Dinesh K. Chhetri
Keyword(s):  
Muscle Activation ◽  
Threshold Pressure ◽  
Laryngeal Muscle ◽  
Phonation Threshold Pressure ◽  
Intrinsic Laryngeal Muscle

The effects of diazepam on intrinsic laryngeal muscle activation during respiration and speech

1988 ◽  
Vol 2 (1) ◽  
pp. 70-77 ◽  
Author(s):  
Christy L. Ludlow ◽  
Geralyn M. Schulz ◽  
Ralph F. Naunton
Keyword(s):  
Muscle Activation ◽  
Laryngeal Muscle ◽  
Intrinsic Laryngeal Muscle

Nitrergic neurons in the canine intrinsic laryngeal muscle

1996 ◽  
Vol 203 (1) ◽  
pp. 45-48 ◽  
Author(s):  
Yasuo Hisa ◽  
Shinobu Koike ◽  
Toshiyuki Uno ◽  
Nobuhisa Tadaki ◽  
Masaki Tanaka ◽  
...  
Keyword(s):  
Laryngeal Muscle ◽  
Intrinsic Laryngeal Muscle

Effects of Vertical Glottal Duct Length on Intraglottal Pressures and Phonation Threshold Pressure in the Uniform Glottis

2018 ◽  
Vol 32 (1) ◽  
pp. 8-22 ◽  
Author(s):  
Sheng Li ◽  
Ronald C. Scherer ◽  
Lewis P. Fulcher ◽  
Xianbo Wang ◽  
Lijun Qiu ◽  
...  
Keyword(s):  
Threshold Pressure ◽  
Phonation Threshold Pressure

scholarly journals DIAPHRAGM (DPM) PLASTICITY FOLLOWING INTRINSIC LARYNGEAL MUSCLE DENERVATION (ILMX).

1999 ◽  
Vol 31 (Supplement) ◽  
pp. S219
Author(s):  
J. R. Rodman ◽  
L. E. Gosselin ◽  
P. Horvath ◽  
D. Megirian ◽  
G. A. Farkas
Keyword(s):  
Muscle Denervation ◽  
Laryngeal Muscle ◽  
Intrinsic Laryngeal Muscle

A Meta-Analysis of Outcomes of Hydration Intervention on Phonation Threshold Pressure

2010 ◽  
Vol 24 (6) ◽  
pp. 637-643 ◽  
Author(s):  
Ciara Leydon ◽  
Marcin Wroblewski ◽  
Naomi Eichorn ◽  
Mahalakshmi Sivasankar
Keyword(s):  
Meta Analysis ◽  
Threshold Pressure ◽  
Phonation Threshold Pressure

scholarly journals Vocal Function and Upper Airway Thermoregulation in Five Different Environmental Conditions

2014 ◽  
Vol 57 (1) ◽  
pp. 16-25 ◽  
Author(s):  
Mary J. Sandage ◽  
Nadine P. Connor ◽  
David D. Pascoe
Keyword(s):  
Relative Humidity ◽  
Repeated Measures ◽  
Upper Airway ◽  
Threshold Pressure ◽  
Vocal Function ◽  
Repeated Measures Design ◽  
Repeated Measures Analysis ◽  
C 23 ◽  
Phonation Threshold Pressure ◽  
Perceived Phonatory Effort

Purpose Phonation threshold pressure and perceived phonatory effort were hypothesized to increase and upper airway temperature to decrease following exposure to cold and/or dry air. Greater changes were expected with mouth versus nose breathing. Method In a within-participant repeated measures design, 15 consented participants (7 men, 8 women) completed 20-min duration trials to allow for adequate thermal equilibration for both nose and mouth breathing in 5 different environments: 3 temperatures (°C) matched for relative humidity (% RH), cold (15 °C, 40% RH), thermally neutral (25 °C, 40% RH), and hot (35 °C, 40% RH); and 2 temperatures with variable relative humidity to match vapor pressure for the neutral environment (25 °C, 40% RH), cold (15 °C, 74% RH) and hot (35 °C, 23% RH). Following each equilibration trial, measures were taken in this order: upper airway temperature (transnasal thermistor probe), phonation threshold pressure, and perceived phonatory effort. Results Data were analyzed using repeated measures analysis of variance, and no significant differences were established. Conclusions The study hypotheses were not supported. Findings suggest that the upper airway is tightly regulated for temperature when challenged by a realistic range of temperature and relative humidity environments. This is the first study of its kind to include measurement of upper airway temperature in conjunction with measures of vocal function.

Intrinsic Laryngeal Muscle Activity in a Spastic Dysphonia Patient

1985 ◽  
Vol 50 (1) ◽  
pp. 54-59 ◽  
Author(s):  
Thomas Shipp ◽  
Krzysztof Izdebski ◽  
Charles Reed ◽  
Philip Morrissey
Keyword(s):  
Muscle Activity ◽  
Emg Activity ◽  
Muscle Paralysis ◽  
Normal Morphology ◽  
Laryngeal Muscles ◽  
Laryngeal Muscle ◽  
Intrinsic Laryngeal Muscle ◽  
Posterior Cricoarytenoid ◽  
Recurrent Laryngeal Nerves ◽  
Intrinsic Laryngeal Muscles

EMG activity from four intrinsic laryngeal muscles (thyroarytenoid, posterior cricoarytenoid, interarytenoid, and cricothyroid) was obtained from one female spastic dysphonia patient while she performed a variety of speech and nonspeech tasks. These tasks were performed before and during a period of temporary unilateral laryngeal muscle paralysis. In the nonparalyzed condition, adductory muscle activity showed intermittent sudden increases that coincided with momentary voice arrests. These muscle patterns and accompanying voice interruptions were not present either when speech was produced in falsetto register or at anytime during the paralysis condition. The data suggest that individuals with this type of spastic dysphonia have normal morphology of recurrent laryngeal nerves and intrinsic laryngeal muscles, which means that the triggering mechanism(s) for spastic dysphonia symptoms must be located at some point neurologically upstream from the larynx.

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