Speech Science, Measuring Airflow and Respiratory function
if tension of the vocal folds increases, what will happen to the fundamental frequency of a person's voice?
increase
what does subglottal pressure do as intensity increases?
increases
is a pneumotach a DIRECT or INDIRECT way to measure airflow?
indirect
what is a pneumotachograph used to measure?
intraoral pressure
if a patient has Spasmodic Dysphonia, how will the duration of their airflow be different than a normal speaker?
it will be shorter
if a person's voice sounds breathy, what does that indicate about their airflow?
it's higher in volume and flowing for a shorter period of time
if a person's voice sounds strained, what does that indicate about their airflow?
it's lower in volume and flowing for a longer period of time
which muscles change medial compression?
lateral cricoarytenoids and interarytenoids
name the intrinsic muscles of the Larynx
lateral cricoarytenoids, interaryntenoids, thyroarytenoids (thyromuscularis and thyrovocalis)
what is the definition of airflow?
movement of a quantity of gas through a given area in a unit of time
which muscles change subglottal pressure?
muscles of inhalation and exhalation
if a person has vocal fold paralysis, which branch of the Vagus nerve was likely damaged?
recurrent laryngeal branch
What can measurements of flow provide information about?
respiration, phonation, articulation
describe the airflow during a fricative
slow and low intensity
what is definition of volume in reference to airflow
the built-up quantity of air over a period of time
which muscles are used to decrease tension in the vocal folds?
thyroarytenoids (unopposed)
which muscles are used to increase tension of the vocal folds?
cricothyroids
what is the range of 'normal' airflow (mL/sec)?
75-250 mL/sec
what is a U-tube manometer used to measure?
alveolar pressure
what causes 'resistance' in reference to Ohm's law
amount of medial compression of the vocal folds
describe the airflow during a voiceless stop
completely stopped during stop-gap and then high intensity flow during the burst-release
if a person is unable to completely close their lips, which cranial nerve was likely damaged?
facial nerve, CN VII
Ohm's law
flow = pressure / resistance
how can subglottal pressure be INDIRECTLY measured?
with a speech-task that measures intraoral pressure during a voiceless stop-gap (active cessation)