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The best example of an established lateralization is that of Broca's and Wernicke's areas, where both are often found exclusively on the left hemisphere. Function lateralization, such as semantics, intonation, accentuation, and prosody, has since been called into question and largely been found to have a neuronal basis in both hemispheres. [6]
The left hemisphere is associated with language and calculations, while the right hemisphere is more closely associated with visual-spatial recognition and facial recognition. This lateralization of brain function results in some specialized regions being only present in a certain hemisphere or being dominant in one hemisphere versus the other.
As suggested by Kimura (1975, 1982), left hemisphere speech lateralization might be based upon a preference for movement sequences as demonstrated by American Sign Language (ASL) studies. Since ASL requires intricate hand movements for language communication , it was proposed that skilled hand motions and speech require sequences of action over ...
[8] [9] In addition to this lateralization of some functions, the low-level representations also tend to represent the contralateral side of the body. The best example of an established lateralization is that of Broca's and Wernicke's Areas where both are often found exclusively on the left hemisphere. These areas frequently correspond to ...
Left-brain interpretation is a case of the lateralization of brain function that applies to "explanation generation" rather than other lateralized activities. [5] Although the concept of the left-brain interpreter was initially based on experiments on patients with split-brains , it has since been shown to apply to the everyday behavior of ...
Colors refer to early embryo: Red=right side, blue=left side, black=dorsal, white=ventral. The axial twist theory was designed to explain how the pattern of contralateral organization, [ 10 ] decussations and chiasmas develops, and why this pattern is so evolutionarily stable, [ 25 ] having no known exceptions throughout the 500 million years ...
On the other hand, pitch perception, such as singing and linguistics related to emotion, are believed to be organized in the right hemisphere. This belief led to the development of the "Functional Lateralization" hypothesis, stating that dysprosody can be caused by lesions in either the right or left hemispheres. [3]
The Geschwind–Galaburda hypothesis has garnered empirical support from a number of studies. For instance, Witelson et al. discovered that Einstein’s brain exhibited an atypical pattern of cerebral lateralisation, which supports the hypothesis that brain lateralisation is related to cognitive abilities. [4]