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What are the kinds of aphasia?
Aphasia is an impairment in the comprehension and/or production of language. The two main headings are fluent and non-fluent aphasia.WERNICKE'S APHASIAANOMIC APHASIACONDUCTION APHASIAUNUSUAL APHASIA SYNDROMESMIXED AND GLOBAL APHASIAThis is an addition to the above-mentioned answer.motor aphasia = caused by any damages to Broca's areasensory aphasia:auditory aphasia = caused by any damages to Wernicke's areavisual aphasia = caused by any damages to angular gyrusGlobla aphasia = caused by any damages or obstruction to "middle cerebral artery" which supplies the Broca's area, Wernicke's area and angular gyrus.
What function affects Broca's area?
Broca's area is the area of the brain responsible for speech production, language processing, and language comprehension, as well as controlling facial neurons. First discovered in 1861, Broca's area was named after Pierre Paul Broca. Broca discovered the area after studying the brain of a patient with a speech impairment after his death. Broca's area is connected to the Wernick's area of the brain by the arcuate fasciculus, which is a pathway made of neurons. It is found in the frontal lobe of the cortex, within the inferior frontal gyrus. It is comprised of two primary parts: the Pars triangularis and the Pars opercularis. The Pars triangularis is located in the anterior portion of Broca's area. Researchers believe that this area of the brain is responsible for helping the human brain interpret different stimulus modes. It is also where verbal conducts are programmed in the brain. The Pars opercularis is located in the posterior region of Broca's area. It is believed that this area supports only one stimulus mode, rather than multiple modes like the Pars triangularis. This portion of Broca's area is also thought to coordinate the organs used for speech in order to produce language. This conclusion has been drawn because the Pars opercularis of Broca's area is located near areas that are related to motor skills. If the Broca's area is damaged, the person is said to suffer from Broca's area aphasia. This condition is also called expressive aphasia, nonfluent aphasia, or motor aphasia. A person suffering from this condition is unable to put together sentences that are grammatically complex. In addition, the sentences typically contain very few words related to content. Despite the person's difficulty in putting together sentences, a person with a damaged Broca's area is generally capable of comprehending language without a problem. In some cases, however, the person may have difficulty with understanding a few words used in a sentence with complex syntax. These individuals typically have damage only in the posterior portion of Broca's area, a condition referred to as Wernicke's aphasia. Those suffering from Wernicke's aphasia may have somewhat normal speech, though it tends to be vague or even meaningless. Individuals who stutter have also been found to have a smaller Pars triangularis and a decreased overall amount of activity in the Broca's area. On the other hand, these individuals tend to have more activity in the right hemisphere of the Broca's area. It is believed that this increased activity is to compensate for the overall decrease.
Damage to Broca's area and Wernicke's area of the brain can cause?
Damage to Broca's area causes an expressive aphasia, whereas damage to Wernicke's area causes a receptive (although illogcally sounding fluent) aphasia.
What is the Difference between dysarthria and expressive aphasia?
Both dysarthria and aphasia are abnormalities of speech. The chain of speech and abnormalities are as follow:i. Hearingii. Understanding -- Aphasiaiii. Thought & word finding -- Aphasiaiv. Voice productionv. Articulation -- DysarthriaAphasia refers to the abnormalities in understanding, thought and word finding.Dysarthria refers to the difficulties in speech at any level such as breathing, vocal cord, larynx, palate, tongue and lips.The common types of aphasia are Wernicke's aphasia and Broca's aphasia.Wernicke's area (Broadmann's area 22) in cerebral cortex receives visual input from occipital lobe and auditory input from temporal lobe, it permits the understanding of spoken and written language and enable a person to interprete it. Destruction of Wernicke's area in dominant hemisphere cause receptive aphasia. The patient is unaware of the speech by others and also himself. So, he speaks long and meaningless speech. Since the Broca's area is intact, he can produce smooth speech.Broca's area (Broadmann area 44, 45) in cerebral cortex is motor speech area. It is connected to the Wernicke's area by arcuate fasciculus. It receives impuls from Wernicke's area and converted it into the motor command and sends to cerebral cortex to be converted into action of muscles involved in speech.If destructed, the patient retains the ability to think. The patient speaks short but meaningful speech with great effort. The sentence is not complete. This is expressive aphasia.For dysarthria, lesions of upper motor neuron, lower motor neuron, basal ganglia, cerebellum or extrapyramidal system leads to disturbance of the intergration of speech production and the speech rhythm. The speech of the patient is not clear but very complete and meaningful. Patient can interprete other's speech and respond to it correctly.
If the cerebral hemisphere corresponding to Broca's area is damaged what is the result?
motor control of the muscles associated with speech is lost.
What part of the brain is damaged during a stroke that impairs speech?
Speech impairment (aphasia) caused by stroke is mostly associated with damage to the Broca's area in the brain. This type of aphasia is called Broca's aphasia. However, many other types of aphasia may arise from neurological damage. Check the Wikipedia page for 'Aphasia' for more details.
What is expressive aphasia?
Expressive aphasia is a neurogenic communicative disorder characterized by the inability to speak or verbally communicate. This disorder is typically associated with damage in Broca's area in the frontal lobe of the brain.
Which of the following parts of the brain would a lesion most likely result in aphasia?
Wernicke's Area
What has the author Paul Broca written?
Paul Broca was a famous French physician and anatomist who is known for his research on the brain and his discovery of "Broca's area," a region in the brain linked to speech production. He is also known for his work on aphasia, a language disorder caused by brain damage.
What part of the brain would a lesion most likely result in aphasia?
Broca's or Wernicke's area. --Allison
Restore damaged area?
Move into damaged thread
What brain centers are functioning as one understands spoken or written words?
Wernicke's area, also known as Brodmann area 22, is a cortical region within the left temporal lobe of the brain that is associated with understanding speech. Lesions of this area, as is sometimes seen in some strokes, can result in an inability to understand speech even though hearing is intact.Lesions of this region are referred to as receptive aphasia or Wernicke's aphasia.
