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Brain Lateralization Essay

289 words - 2 pages

Brain Lateralization and Language Reflection
By: You Know Who

The brain is divided into two parts which can be described as the right and left hemisphere. Each side of the brain is responsible for various mental functions, but there are certain functions that both the right and left brain are responsible for individually. Lateralization occurs when a specific hemisphere of the brain specializes in a certain mental process. For instance, the right hemisphere of ...view middle of the document...

A study conducted to determine the functional relevance of lateralization differences revealed that “subjects with weak lateralization (more bilaterality) were less affected by either left- or right-side TMS than were subjects with strong lateralization to one hemisphere. Thus in some people, language processing seems to be distributed evenly between the hemispheres, allowing for ready compensation after a unilateral lesion” (Knecht et al., 2002).
Trauma to the brain can cause language disruption which is known as aphasia. One of the major types of linguistic deficits is what is known as “global aphasia” which is when an individual is able to speak very little and understand very little with long lasting language deficits (Knecht et al., 2002). This happens when major damage is done to the left hemisphere of the brain. Even though this can be the most devastating type of brain trauma, there may instances where an individual may recovery or achieve partial recovery.

References

Knecht, S., Flöel, A., Dräger, B., Breitenstein, C., Sommer, J., Henningsen, H., . . . Pascual-Leone, A. (2002). Degree of language lateralization determines susceptibility to unilateral brain lesions. Nature Neuroscience, 5(7), 695-9. doi:http://dx.doi.org/10.1038/nn868

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