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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 ...
Diagram of Broca's and Wernicke's area of Human Brain. Items portrayed in this file depicts. brain. Wernicke's area. Broca's area. creator. some value. author name ...
Lesions to Broca's Area result primarily in disruptions to speech production. Damage to Wernicke's area, located in the lower part of the temporal lobe, mainly leads to speech reception disruptions. This area was named for German doctor Carl Wernicke, who discovered it in 1874 in the course of his research into aphasias (loss of ability to speak).
Areas 44 and 45 – Broca's area, includes the opercular part and triangular part of the inferior frontal gyrus; Area 46 – Dorsolateral prefrontal cortex; Area 47 – Orbital part of inferior frontal gyrus; Area 48 – Retrosubicular area (a small part of the medial surface of the temporal lobe) Area 49 – Parasubicular area in a rodent
The planum temporale is a brain region within Broca's Area, and is thought to be the most asymmetric area of the human brain; with the left side having shown to be five times the size of the right in some individuals. [9] However in people who are left handed, this asymmetry has shown to be reduced [10]
Superior division supplies lateroinferior frontal lobe (location of Broca's area i.e. language expression) Inferior division supplies lateral temporal lobe (location of Wernicke's area i.e. language comprehension) Deep branches supply the basal ganglia as well as the internal capsule; MCA occlusion site and resulting Aphasia Global – trunk of MCA
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]
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.