COMD 5070 Final Exam Questions and Correct Answers | Latest Update
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Course
COMD 5070
Institution
COMD 5070
4 features of the scientific method
Empirical: based on data
Deterministic: Obeys physical laws, things are not random
Predictive
Parsimonious: Use simplest explanation but no simpler
How many semitones in an octave?
12
What is the Nyquist frequency?
Half the sample ...
It relies on acoustic nasometry but may include aerodynamic measures as well. Looks at nasal
airflow over time. It comes with a software which will allow for quantifying measures of
nasalance.
Example: OroNasal Mask System from a company called Glottal Enterprises.
Acoustic Nasometry (how does it work conceptually)
you have two microphones. One is set above the divider plate, and one
below. This divider plate is set on the front of the person's face so it sits
above the person's upper lip and below the nose. So one of the
microphones picks up energy that comes below the mouth, and the other
picks up energy that comes from the nose. The relative proportions of the
energy from these two microphones can be represented as nasalance. This
is useful in clinical assessments because you can determine if a person falls
within normal limits for nasalance for a given utterance. It can also be used
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to provide feedback during therapy so the person can see how they're
managing the oral nasal balance of speech produ ction.
EMG
used to study electrical activity in muscles.
What innervates muscles?
motor neurons
What does a motor neuron consist of?
motor neuron
few or many muscle fibers
What causes contraction of muscles?
electrical stimulation
Surface Electrodes
measure larger muscles. Less invasive due to many muscle fibers firing at
the same time. Must have signal amplified to boost signal.
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