18 Questions
What is the main limitation of using markers or their attached wires to track fleshpoints during speech?
They may interfere with natural speech
What is the frequency of the ultrasound wave used in imaging the tongue?
1 MHz
What is the advantage of using X-ray Microbeam to track articulatory movements?
It allows for rapid and accurate tracking of articulatory movements
What is the limitation of using ultrasound imaging to study articulation?
It cannot image the tongue tip and epiglottis accurately
What is the purpose of using reference points in X-ray Microbeam tracking?
To compute the distance between pellets and stable reference points
What is a disadvantage of using X-ray Microbeam to track articulatory movements?
It exposes subjects to radiation
What is a limitation of Electromagnetic Midsagittal Articulograph (EMMA) in terms of data collection?
It can only collect data at midline
What is an advantage of Electropalatography (EPG) in articulation analysis?
It can be used in conjunction with other instruments
What is a limitation of Optotrack in terms of its use?
It is limited to external use and cannot be used inside the mouth
How does Electromagnetic Midsagittal Articulograph (EMMA) track fleshpoint movement?
By measuring the movement of small receiver coils through alternating magnetic fields
What is an advantage of Optotrack in articulation analysis?
It can track movement of the lips and jaw in three-dimensional space
How does Electropalatography (EPG) generate a signal?
When the tongue touches a transducer embedded in a palatal prosthesis
What is the primary function of the velum during speech?
To regulate airflow between the nasal and oral cavities
What is the result of too much air flowing from the larynx into the nasal cavity?
Hypernasality
What is the cause of oral consonants being produced as nasal consonants?
All of the above
What is the effect of a blocked passage in the nasal cavity during speech?
Hyponasality
What is the term for the inadequate closure of the nasal cavity during speech?
Velopharyngeal incompetence
What is the result of the velum remaining raised and not opening adequately during speech?
Hyponasality
Learn about the use of ultrasound in speech therapy, including its limitations and how it captures dynamic images of the tongue. Understand the process of ultrasound technology and its applications.
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