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The concept of "right-brained" or "left-brained" individuals is considered a widespread myth which oversimplifies the true nature of the brain's cerebral hemispheres (for a recent counter position, though, see below). Proof leading to the "mythbuster" of the left-/right-brained concept is increasing as more and more studies are brought to light.
Moreover, a study that instructed patients with disconnected hemispheres (i.e., split-brain patients) to match spoken words to written words presented to the right or left hemifields, reported vocabulary in the right hemisphere that almost matches in size with the left hemisphere [111] (The right hemisphere vocabulary was equivalent to the ...
The left hemisphere is usually dominant in right-handed people, although bilateral activations are not uncommon in syntactic processing. It is now accepted that the right hemisphere plays an important role in the processing of suprasegmental acoustic features like prosody, which is "the rhythmic and melodic variations in speech". [3]
The left and right hemispheres are associated with different functions and specialize in interpreting the same data in different ways, referred to as lateralization of the brain. The left hemisphere is associated with language and calculations, while the right hemisphere is more closely associated with visual-spatial recognition and facial ...
Visual Depiction of Left and Right Hemispheres during Semantic Processing. Above is an example of what differences in the Left and Right Hemispheres may look like during semantic processing. If one was told asked for the associations of the word "corn," the Left Hemisphere would most likely quickly prime the image circled above, a corn on the cob.
Language areas are represented unilaterally in the human brain. [3] In around 95% of right-handers, these brain areas are often located on the left hemisphere, however the proportion reduces in left handers down to around 70%. [2] Therefore 7 in every 100 individuals is right-hemisphered for language and left-hand dominant. [4]
The left and right sides of the brain appear symmetrical, but they function asymmetrically. [113] For example, the counterpart of the left-hemisphere motor area controlling the right hand is the right-hemisphere area controlling the left hand. There are, however, several important exceptions, involving language and spatial cognition.
Both the left and right hemisphere have brain structures associated with spoken and signed languages. Spoken and signed languages both depend on the same cortical substrate. [2] This shows that the left hemisphere is responsible for processing all facets of language, not just speech.