Lecture 4 Flashcards
What are the three parts of speech production?
Speech
Language
Cognition
What two things does speech make up?
phonetics and movements
What four things make up language?
Phonology
Semantics
Syntax
Morphology
What is cognition?
Some kind of internal representation of concepts, ideas, or experiences
What three things are necessary to achieve effective communication?
Speech
Language
Cognition
What is the neurological process of getting sound?
6
- Nerve impulses
- Muscle Contractions
- Movements
- Vocal cavity shapes
- Air pressure changes
- Sound
What is the first step in making sound?
You have a message that you want to present. At this point, nerve impulses move the muscle
What is the second step in making sound?
The muscle begin to contract. This muscle contraction are what causes the parts of the speech system to move
What is the third step in making sound?
These movements create the shapes in the vocal tract to produce the sounds that we want to make.
What is the fourth step in making sound?
Then there are air pressure changes throughout the vocal tract during this process.
What is the fifth step in making sound?
The tempered air exists the lips and this is when physical sound waves come out.
What makes up the central nervous system (CNS)?
Brain/spinal cord
What is the peripheral nervous system (PNS)?
everything else
What is the purpose of efferent neurons?
Nerve impulses from CNS to periphery (motor functions)
What is the purpose of afferent neurons?
Nerve impulses from periphery to CNS (sensory functions)
Where in the brain does language and speech appear to emerge?
The left cerebral hemisphere
Do both hemispheres and subcortical structures work during speech and language?
yes
It is critically important to know that _______ hemispheres are involved in language production.
both
What is the most important thing for speech?
Air
What does airflow force to happen?
vocal fold vibration
Obstruction in airflow yields ___________ sound sources.
supraglottal
What is the definition for phonatory source (periodic)?
air pressure forces the vocal folds to vibrate
What is the definition of the supraglottal source (aperiodic)?
(2)
- air pressure builds up behind vocal-tract closures and is released (stops)
- Air is forced through narrow constrictions (fricatives)
What is aperiodic sound due to?
the structures inside the vocal tract