Abstract
Man is, of all the animals, the onewhose brain in the normal state is themost asymmetrical. He is also the onewho possesses most acquired faculties.Among these faculties...the faculty ofarticulate language holds pride of place.It is this that distinguishes us the mostclearly from the animal.—Broca (1877)
Highlights
The most well established brain asymmetry is related to language, in which the specialized left hemisphere is markedly expanded in most people, especially in Broca’s speech area, the planum temporale (Toga and Thompson, 2003)
Unlike the well-established relationship between planum temporale asymmetry and language dominance, whether those newly found structural asymmetries are related to the cognitive functions and to what extent remains largely unknown
Plessen et al (2014) made three major findings regarding the relationship between brain asymmetry and cognitive function
Summary
Age, and cognitive correlates of asymmetries in thickness of the cortical mantle across the life span by Plessen, K. The most well established brain asymmetry is related to language, in which the specialized left hemisphere is markedly expanded in most people, especially in Broca’s speech area, the planum temporale (Toga and Thompson, 2003).
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