Brain: Does the language center only know the Broca area?

For more than 150 years, clinical aphasia and behavioral neurology have been fundamentally affected by Paul Broca— he discovered that stroke survivors with severe and persistent speech production disorders had damage to the left frontal lobe.

He found that the left frontal lobe of stroke survivors with severe and persistent speech production disorders had been damaged.

The Broca area and Wernicke area are usually located in the dominant hemisphere of the brain (usually on the left side).

Broca aphasia, also known as expressive aphasia, motor aphasia, or unfluent aphasia, the patient is unable to produce grammatically fluent sentences, and telegram->The patient can know that he is not fluent in speaking, and his ability to understand language is normal.

Broca Broca aphasia, also known as expressive aphasia, motor aphasia, or unfluent aphasia, patients are unable to produce grammatically fluent sentences, and telegraph->The patient can know that he is not fluent in speaking, and his ability to understand language is normal.

However, with the in-depth study of the brain, scientists have been controversial about the type of aphasia caused by the damage of the brain area required for language production and the posterior half of the left lower frontal gyrus.

Researchers studied the long-term speech production results of 134 stroke survivors with left frontal lobe lesions to separate the effects of damage in the Broca area from damage in the surrounding areas, which affect the language of the lower parietal and upper temporal lobes in the posterior joint cortex.

Researchers studied the long-term speech production results of 134 stroke survivors with left frontal lobe lesions to separate the effects of damage in the Broca area from damage in the surrounding areas, which affect the language of the lower parietal and upper temporal lobes in the posterior joint cortex.

The results showed that, in general, these patients had varying degrees of damage to one or more of the nine atlas-based gray matter or white matter regions, including one of the nine atlas-based gray or white matter regions.

Six left cortical and subcortical gray matter regions defined using the brain atlas

Six left cortical and subcortical gray matter regions defined using the brain atlas

The oral picture description score of the Comprehensive Aphasia Test was used as the outcome measure.

The oral picture description score of the Comprehensive Aphasia Test was used as the outcome measure.

Further analysis showed that the impact of white matter damage cannot be explained by the impact of white matter damage.

134 cases of cerebral stroke lesions in patients with overlapping FIG.

134 cases of cerebral stroke lesions in patients with overlapping FIG.

For this reason, the researchers believe that the study provides evidence for three new conclusions .

 

references:

references:

oup.

oup.
com/brain/article/144/3/817/6124755" target="_blank" rel="noopener">Damage to Broca's area does not contribute to long-term speech production outcome after stroke.
BRAIN 2021: 144; 817–832.
doi:10.
1093/brain/awaa460.
oup.
com/brain/article/144/3/817/6124755" target="_blank" rel="noopener">Damage to Broca's area does not contribute to long-term speech production outcome after stroke .
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