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Speech Therapy

Speech Language Mechanism and Production

QuestionAnswer
Location of Broca's Area Inferior frontal gyrus of the frontal lobe; superior to the Sylvian fissure at the inferior end of the premotor cortex
What does Broca's area do with regard to speech production? With input from subcortical structures, it develops the motor sequencing plan for speech sounds (motor programming) and expressive aspects of speech (language thought)
How would trauma to Broca's area manifest if a person with the condition were asked a question? Trauma to this area would cause inability to speak (even though the question was understood) because the motor behavior of talking could not be planned.
What is the Perisylvian Zone/Area? Area/zone of the brain which contains the cerebral structures for communication:[BWAASSMC] Broca's, Wernicke's, arcuate fasciculus, angular gyrus, supramarginal gyrus, subcotical areas, motor cortex,corpus callosum
What does the word "perisylvian" mean? peri = around; sylvian = sylvian fissure (aka lateral sulcus)
Where is Wernicke's Area located? located in the posterior part of the superior temporal gyrus
What does Wernicke's area do with regard to speech production? responsible for the comprehension of spoken language and the generation & formulation of internal linguistic concepts (ideas)
What are the cortical and subcortical structures that provide Broca's area with information? parietal lobe, basal nuclei, limbic system, and cerebellum
How does the arcuate fasciculous function with regard to speech production? Idea information from Wernicke's area is transmitted to the premotor cortex (Broca's area) via this large grouping of association fibers
What is the function of the angular gyrus in speech production? symbolic integration for reading (understanding written symbols)
Angular gyrus processes information from which lobe of the brain? Occipital lobe sends info to this gyrus.
Angular gyrus shares the same function as which other gyrus? shares same function as surpramarginal gyrus
What is the function of the surpramarginal gyrus in speech production? symbolic integration for reading (understanding written symbols)
How would a person be affected if she had a stroke that damaged the supramarginal gyrus? A stroke in this area would prevent the ability to interpret symbols for reading and writing
How would a person be affected if she had a stroke that damaged the angular gyrus? A stroke in this area would prevent the ability to interpret symbols for reading and writing
Supramarginal gyrus processes information from which lobe of the brain? Occipital lobe sends info to this gyrus.
Where is the supramarginal gyrus located? this gyrus is located anteriorly to the angular gyrus; it curves around the posterior end of the Sylvian fissure (lateral sulcus)
Where are the subcortical areas of the brain located? These areas lie deep to the cerebral cortex
What is the function of the subcortical areas with regard to speech production? They act as a relay station between wernicke's and Broca's area;also provide connections to and from the thalamus and other parts of the perisylvian zone.
What is the function of the motor cortex for speech production? Function is to activate the voluntary muscles of speech production
What role does the corpus callosum play in speech production. This tract of commissural fibers transmits information between hemispheres so that the motor actions of speech production happen simultaneously on both sides of the body.
To begin speech production an idea formulates in which area? Wernicke's area begins speech production in this way
The information produced in Wernicke's area is transmitted to Broca's area via which fibers? Arculate fascicullous communicates between these areas
Signals from corpus callosum travel down descending motor pathways to the muscles of which speech systems? Respiration, Phonation, Articulation
What is the general sequence of speech production? Wernicke's = idea; idea goes via arcuate fasciculous to Broca's area; Broca's plans motor mvmnts w/ info from parietal lobe,basal nuclei,limbic syst;sends sig to PMC via associatn fibers;corpus collosum xmits to opp side;signals dn descending mtr pathways
What role does the cerebellum play in speech production? coordinates rapid, precise movements of speech muscles; grades (smoothes out) speech flow.
What role does the limbic system play in speech production? memory and learning; emotion involved in outbursts
What role do the basal nuclei play in speech production? Plays significant role in smooth motor behavior, also in learning, memory, and emotion behind expressions of contempt and disgust
What role does the hippocampus play in speech production? gets any newly learned information into long term memory during sleep
What subcortical structure/system houses the hippocampus? The limbic system
what is the function of the fornix and to what structure/system does it belong? Function: memory and learning; assists other limbic areas; the limbic system
What role does the cingulate gyrus play in speech production? Memory and learning; emotion involved in outbursts
What structures make up the limbic system? The hippocampus, fornix, and cingulate gyrus
What structures make up the basal nuclei? Caudate nucleus, putamen, globus pallidus
What is the role of the caudate nucleus in speech? learning and memory with regard to motor movements; connected to the frontal lobe
What is the function of the putamen with regard to speech production? motor learning and performance; regulation of movement for talking;involved in responses of contempt and disgust
What is the role of the globus pallidus in speech production? memory and learning thought; assists putamen
Primary motor cortex is responsible for voluntary skeletal muscle movements or for INvoluntary movements? Responsible for voluntary skeletal muscle movement.
Which hemisphere is the language-dominant side? The left hemisphere
Created by: wyhanes