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Laterality of motor and sensory control has been the subject of a recent intense study and review. [5] It turns out that the hemisphere of speech is the hemisphere of action in general and that the command hemisphere is located either in the right or the left hemisphere (never in both).
Research by Michael Gazzaniga and Roger Wolcott Sperry in the 1960s on split-brain patients led to an even greater understanding of functional laterality. Split-brain patients are patients who have undergone corpus callosotomy (usually as a treatment for severe epilepsy), a severing of a large part of the corpus callosum .
Emotional lateralization is the asymmetrical representation of emotional control and processing in the brain. There is evidence for the lateralization of other brain functions as well.
Laterality: Asymmetries of Body, Brain and Cognition is a bimonthly peer-reviewed academic journal covering the study of laterality, and related behavioral and neurological factors, in human and non-human species.
Conditions include leftward functional hemispheric lateralization, loss of laterality for language comprehension, a reduction in gyrification, brain torsion etc. [22] [23] Dyslexia As studied earlier, language is usually dominant in the left hemisphere.
Paul Satz (September 12, 1932 – June 20, 2010) was an American psychologist, and one of the founders of the discipline neuropsychology.His research on the relationship between the brain and human behavior spanned diverse topics including laterality, handedness, and developmental disorders.
Contralateral brain. 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.
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.