Cleft 7 Flashcards
- Resonance disorders are common in individuals with a history of …
- –Can be due to __ ___, or ___ in vocal tract
- Velopharyngeal dysfunction can cause a __ __(hypernasality) and also __ __ of the air
- –Significant nasal emission can cause other speech characteristics due to…
resonance:
- Resonance disorders are common in individuals with a history of cleft lip and palate or other craniofacial anomalies.
- –Can be due to velopharyngeal dysfunction, or obstruction in vocal tract
- Velopharyngeal dysfunction can cause a resonance disorder (hypernasality) and also nasal emission of the air
- –Significant nasal emission can cause other speech characteristics due to lack of adequate oral airflow and air pressure
resonance: natural frequency at which an object vibrates effectively
Normal resonance
- Speech requires both…
- Airflow is converted into…
- Sound is modified by …
- Speech requires both airflow and sound.
- Airflow is converted into air pressure by articulators, which is needed for pressure-sensitive consonants (plosives, fricatives and affricates)
- Sound is modified by resonance, which is needed for voiced consonants and vowels
Normal resonance
- Resonance—tendency of a system to …
- Resonance with speech—modification of ….
- Resonance provides the …
- Resonance—tendency of a system to vibrate (oscillate) with a larger amplitude at some frequencies than others due to the natural vibration of the system
- Resonance with speech—modification of phonated sound through selective enhancement of certain frequencies
- Resonance provides the quality and uniqueness of the voice.
normal resonance
- Resonance is determined by …
- Smaller cavities enhance ….
- Larger cavities enhance…
- Resonance is determined by size and shape of cavities of the vocal tract (pharyngeal, oral, and nasal cavities).
- Smaller cavities enhance higher frequencies.
- Larger cavities enhance lower frequencies and result in a richer sound.
normal resonance
- Resonance is a component of all …
- Vowels are actually ….
- They are produced by changing the ….
- Vowels affect the …, changing selective enhancement of ….
- Resonance is a component of all voiced consonants and all vowels.
- Vowels are actually resonance sounds.
- They are produced by changing the size and shape of the oral cavity with tongue, mandible, and lips.
- Vowels affect the size and shape of oral cavity, changing selective enhancement of formant frequencies and perception of the vowel.
Normal resonance
- High vowels have more….
- High tongue position causes more …
- High vowels have more nasal resonance than low vowels.
- High tongue position causes more oral impedance and more oral pressure, which increases transpalatal transmission of the sound.
resonance disorders
-Resonance disorder—…
-Types include the following: 1. 2. 3. 4.
-Resonance disorder—abnormal transmission of sound energy through the oral, nasal,and/or pharyngeal cavities of the vocal tract duringspeech production
- Types include the following:
1. Hypernasality
2. Hyponasality
3. Cul-de-sac resonance - “potato in the mouth speech”
4. Mixed resonance-challenging to Dx (combo of hyper and hypo)
hypernasality
- Hypernasality—…
- Due to __ ___ of the oral and nasal cavities during speech
- Most perceptible on ___
- Hypernasality—abnormal nasal resonance during the production of oral sounds
- Due to abnormal coupling (sharing of acoustic energy) of the oral and nasal cavities during speech
- Most perceptible on vowels
to assess, ask them to count from 60-69
hypernasality
When severe…
- Voiced oral consonants become …
- -___ production
- Other consonants may be …
- -____ production
When severe…
- Voiced oral consonants become nasalized (e.g., m/b, n/d).
- -Obligatory production
- Other consonants may be substituted by nasals (e.g., n/s).
- -Compensatory production
Causes of Hypernasality
Causes include:
- A …
- A …
- A very large…
- …..
Causes include:
- A velopharyngeal opening
- A thin velum due to a submucous cleft
- A very large oronasal fistula (in figures)
- Nasal articulation on certain oral sounds (phoneme-specific) due to mislearning
Hyponasality and Denasality
- Hyponasality—…
- Denasality-…
- In both cases, individual sounds __ __
- Hyponasality—a reduction in normal nasal resonance during speech, particularly with nasal sounds
- Denasality—no nasal resonance during speech, including with nasal sounds
- In both cases, individual sounds “stuffed up”
Hyponasality and Denasality
- Hyponasality and denasality particularly affect …
- Nasal consonants sound similar to …
- Hyponasality and denasality particularly affect nasal sounds but also affect vowels if severe.
- Nasal consonants sound similar to their oral cognates (e.g., b/m, d/n, g/ŋ).
Hyponasality and Denasality
-Caused by blockage in nasopharynx or nasal cavity due to: 1. 2. 3. 4.
- Caused by blockage in nasopharynx or nasal cavity due to:
1. Allergic rhinitis
2. Common cold
3. Adenoid hypertrophy
4. Hypertrophic tonsils that intrude into the pharynx
hyponasality and denasality
Causes with history of cleft lip/palate: 1. 2. 3. 4.
Causes with history of cleft lip/palate:
- Deviated septum
- Choanal stenosis or atresia
- Stenotic naris
- Maxillary retrusion which restricts pharyngeal and nasal cavity space
cul-de-sac resonance
- Cul-de-sac resonance—…
- Sound is …
- Speech is perceived as …
- Cul-de-sac resonance—acoustic energy is blocked from exiting at a cavity’s normal outlet
- Sound is absorbed by soft tissues.
- Speech is perceived as muffled and low in volume.
cul-de-sac resonance
-Types of cul-de-sac resonance are defined by ….
-Types include:
1.
2.
3.
- Types of cul-de-sac resonance are defined by blockage at the cavity’s exit point.
- Types include:
1. Oral cul-de-sac resonance
2. Nasal cul-de-sac resonance
3. Pharyngeal cul-de-sac resonance
Oral Cul-de-Sac Resonance
-Oral cul-de-sac resonance—…
- Causes include:
1. …
2. ..
-Oral cul-de-sac resonance—sound is partially blocked from exiting the oral cavity during speech.
- Causes include:
1. Microstomia—a small mouth opening
2. “Mumbling,” speaking without opening the mouth normally
nasal cul-de-sac resonance
- Nasal cul-de-sac resonance—…
- It is most noticeable with both…
- Nasal cul-de-sac resonance is common with …
- Nasal cul-de-sac resonance—sound is partially blocked from exiting the nasal cavity during speech.
- It is most noticeable with both VPI (which would otherwise cause hypernasality) and an anterior nasal blockage.
- Nasal cul-de-sac resonance is common with cleft lip/palate when there is both VPI and blockage due to nares stenosis.
pharyngeal cul de sac resonance
-Pharyngeal cul-de-sac resonance—…
-Causes include:
1.
2.
-Pharyngeal cul-de-sac resonance—sound remains in the oropharynx during speech
- Causes include:
1. Large tonsils that block exit of the oropharynx and entrance to oral cavity
2. Obstruction on the pharyngeal wall of the hypopharynx or oropharynx
mixed resonance
-Mixed resonance—…
-Although hypernasality and hyponasality cannot…
-Causes
1.
2.
- Mixed resonance—any combination of hypernasality (with or without nasal emission), hyponasality, and cul-de-sac resonance
- Although hypernasality and hyponasality cannot occur simultaneously, they can both occur on different sound in the same speaker.
- Causes
1. VPI and obstruction
2. Apraxia
effect of surgery on resonance
-Surgery can change the …
- Adenoidectomy:
1. …
2. … - Tonsillectomy:
1. …
-Surgery can change the anatomy of the resonating cavities and affect speech.
- Adenoidectomy:
1. Can improve hyponasality
2. Can exacerbate or cause velopharyngeal insufficiency with hypernasality (and nasal air emission) - Tonsillectomy:
1. Can eliminate pharyngeal cul-de-sac resonance
Treatment
1.
2.
3.
- Surgery
- Prosthetic device
- Speech therapy
- -ONLY when abnormal resonance is phoneme-specific due to faulty articulation
Nasal Emission
-Nasal emission—..
-Four basic types of nasal emission: 1. 2. 3. 4.
-Nasal emission—when there is an attempt to build up intraoral air pressure for consonants while there is a leak in the system (velopharyngeal valve or oronasal fistula)
- Four basic types of nasal emission:
1. Inaudible nasal emission
2. Audible nasal emission
3. Nasal rustle (turbulence)
4. Phoneme-specific nasal emission (PSNE)
Nasal Emission
- Inaudible nasal emission—…
1. There is very little …
2. Hypernasality …
- Inaudible nasal emission—occurs with a relatively large opening
1. There is very little impedance to the flow and therefore, little friction or pressure.
2. Hypernasality masks the sound of nasal emission.
Nasal Emission
-Inaudible nasal emission—…
–Can cause secondary characteristics including:
1.
2.
3.
4.
5.
- Inaudible nasal emission—occurs with a relatively large opening
- -Can cause secondary characteristics including:
1. Weak or omitted consonants
2. Short utterance length
3. A nasal grimace
4. Compensatory articulation productions
5. Dysphonia
Nasal Air Emission
- Audible nasal emission—…
1. There is …
2. There is less pronounced …
3. There still may be some of the …
- Audible nasal emission—occurs when there is a medium-sized velopharyngeal opening
1. There is greater resistance to the flow, making the nasal emission more audible.
2. There is less pronounced hypernasality to mask the nasal emission.
3. There still may be some of the other secondary characteristics due to a leak of airflow.
Nasal Air Emission
- Nasal rustle (also called nasal turbulence)—…
1. There is __ __ to the flow, making the…
2. Air flow through a …
3. Air is released into …
4. Nasal rustle is usually ___, but increases with …
- Nasal rustle (also called nasal turbulence)—occurs when there is a small velopharyngeal opening
1. There is great resistance to the flow, making the nasal emission more audible.
2. Air flow through a small opening results in higher air pressure than flow through a large opening.
3. Air is released into nasal cavity with pressure, causing very audible bubbling of nasal secretions.
4. Nasal rustle is usually inconsistent, but increases with increase in utterance length, speed, phonemic complexity, and even fatigue.