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Oversimplification of lateralization in pop psychology. This belief was widely held even in the scientific community for some years. Some popularizations oversimplify the science about lateralization, by presenting the functional differences between hemispheres as being more absolute than is actually the case.
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 ...
a) The right hemisphere has more control over emotion than left hemisphere. [n 2] b) The right hemisphere is dominant in emotional expression in a similar way that the left hemisphere is dominant in language. c) The right hemisphere is dominant in the perception of facial expression, body posture, and prosody.
The "dichotic fused words test" (DFWT) is a modified version of the basic dichotic listening test. It was originally explored by Johnson et al. (1977) [25] but in the early 80's Wexler and Hawles (1983) [26] modified this original test to ascertain more accurate data pertaining to hemispheric specialization of language function.
In response to this, the right hemisphere and posterior parietal cortex compensate to undertake language processing tasks, resulting in inefficiencies in language processing. [2] This compensatory activity in other areas of the brain may explain the variability in the degree of impairment experienced by dyslexic individuals. [ 3 ]
Research comparing the effects of lesions in the two hemispheres, split-brain patients, and perceptual asymmetries have aided in the knowledge of speech lateralization. In one particular study, the left hemisphere's sensitivity to differences in rapidly changing sound cues was noted (Annett, 1991).
The contralateral organization of the forebrain (Latin: contra‚ against; latus‚ side; lateral‚ sided) is the property that the hemispheres of the cerebrum and the thalamus represent mainly the contralateral side of the body. Consequently, the left side of the forebrain mostly represents the right side of the body, and the right side of ...
The functional specialization of these hemispheres are offering insight on different forms of cognitive behaviour therapy methods, one focusing on verbal cognition (the main function of the left hemisphere) and the other emphasizing imagery or spatial cognition (the main function of the right hemisphere). [14]