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Broca's area, or the Broca area (/ ˈ b r oʊ k ə /, [1] [2] [3] also UK: / ˈ b r ɒ k ə /, US: / ˈ b r oʊ k ɑː / [4]), is a region in the frontal lobe of the dominant hemisphere, usually the left, of the brain [5] with functions linked to speech production. Language processing has been linked to Broca's area since Pierre Paul Broca ...
Therefore, when Broca's area or surrounding areas in the left hemisphere are damaged, hemiplegia or hemiparesis often occurs on the right side of the body in individuals with Broca's aphasia. Severity of expressive aphasia varies among patients. Some people may only have mild deficits and detecting problems with their language may be difficult.
Furthermore, Broca's area is structurally related to the thalamus, and both are engaged in language processing. [5] The connectivity between both areas is two thalamic nuclei, the pulvinar, and the ventral nucleus, which are involved in language processing and linguistic functions similar to BA 44 and 45 in Broca's area. [5]
"The middle cerebral arteries supply blood to the cortical areas involved in speech, language and swallowing. The left middle cerebral artery provides Broca's area, Wernicke's area, Heschl's gyrus, and the angular gyrus with blood". [20] Therefore, in patients with Wernicke's aphasia, there is typically an occlusion to the left middle cerebral ...
In neuroanatomy, the arcuate fasciculus (AF; from Latin 'curved bundle') is a bundle of axons that generally connects Broca's area and Wernicke's area in the brain. It is an association fiber tract connecting caudal temporal lobe and inferior frontal lobe. [1]
A Brodmann area is a region of the cerebral cortex, ... the consistent localization of Broca's speech and language area to the left Brodmann areas 44 and 45).
From there, they continue to Wernicke's area, where the meaning of the words is extracted. In order to speak, the meanings of words are sent from Wernicke's area via the arcuate fasciculus to Broca's area, where morphemes are assembled. The model proposes that Broca's area holds a representation for articulating words.
In this rare type of aphasia, Broca's area, Wernicke's area, and the arcuate fasciculus are intact but the watershed region around them is damaged. [8] This damage isolates these areas from the rest of the brain. The most frequent etiology of mixed transcortical aphasia is stenosis (narrowing) of the internal carotid artery.