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Chapter 9
Lecture 6
25
Other
Undergraduate 1
03/17/2012

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Term
Cricothyroid Muscle
Definition
[image]
Changes loudness and pitch
Term
[image]
Definition
  1. True Vocal Folds
  2. False Vocal Folds
  3. Epiglottis
  4. Thyroid Cartilage
  5. Arytenoids
  6. Cricoid Cartilage
Term
True Vocal Folds
Definition
Used for normal vibration
Term
False Vocal Folds
Definition
Used normally to close off larynx from stray food/liquid
Also used as 'second voice'
Term
3 Vocal Attributes
Definition
1. Pitch
2. Loudness
3. Quality
Term
Pitch
Definition
Perceptual correlate of F0, or fundamental frequency
Term
Fundamental Frequency
Definition
The lowest frequency of a vibration, measured in hertz
Term
Optimal Pitch Level
Definition
Most suitable pitch for an individual, determined by vocal fold structure
Men 130
Women 250
Children up to 500
Term
Vocal folds change over time
Definition
Childhood: high up in the neck, descend with age
3 mm at birth
Male lengthens to 17-20 mm
Female lengthens to 12 1/2-17 mm
Term
Changes in pitch (4)
Definition
Increase:
1. Lengthening or tensing of vocal folds
2. Increase airflow between vocal folds (vf)
Decrease:
1. Relaxing of intrinsic muscles
2. Adding mass per length of vf (eg: swelling, nodules)
Term
Loudness
Definition
Perception of intensity, measured by decibels (dB) (sound pressure level-SPL)
Term
Changes in loudness (2) and how pitch and loudness relate
Definition
1. Adduction (VFs stay together longer)
2. Increased air between lungs and VFs = build up of subglottal air pressure

Pitch and loudness tend to be relatively similar, eg yelling
Term
Quality
Definition
Perception of spectral distribution (how frequency is displayed on graph); based on integrity of VF vibrations
ex of quality problems: hoarseness, breathy voice, harshness, rough, strained, etc.
Term
Steps to VF vibrations
Definition
Air pressure opens VF from bottom up, the negative pressure closes VF
Wave-like motions
Term
Voice Disorder
Definition
Voice is problematic to user in professional, social, or other contexts
Exhibits when pitch, loudness, quality, and/or flexibility differs from the voices of others of similar age, sex, and cultural groups
Term
Common symptoms/complaints of vocal disorders
Definition
hoarseness, strain, vocal fatigue, pain, loss of range of phonation, aphonia (complete or intermittent loss of voice), diplophonia (double voice), breathiness, etc
Term
How common is a vocal disorder?
Definition
3-9% of children and adults of general population
40% of teachers and 20-50% of teachers report problems with voice
Term
Differential diagnosis
Definition
Takes into account a person's case history and perceptual signs, rules out things for diagnosis (problem solving)
Term
Nonphonatory vocal disorders
Definition
Not related to voice
1. strider - breathing loud enough to hear
2. excessive throat clearing
3. consistent, episodic, and functional aphonia
Term
Vocal misuse and abuse
Definition
Contribute to structural damage, abuse is harsher, can result in growths, laryngitis, and edema
Term
Vocal nodules
Definition
[image]
VF cannot come together in front or back, growths on vocal folds
Term
Vocal Polyps
Definition
[image]
2 types:
Sessile - broad, on the inside of VF
Pedunculated - outside and attached to VF
Term
Edema
Definition
Accumulation of liquid in the VF, thickens VF and makes them heavier
Term
Dysarthia
Definition
Muscle weakness, discoordination, paralysis (uni or bilateral), tremor
Term
SLPs examination for papilloma (2)
Definition
1. Case history - nature of disorder, how it affects patient, developmental history, overall physical and psychological condition
2. Perceptual evaluation of pitch, loudness, and quality
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