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Dual Brain Asymmetry

Dual Brain Asymmetry Another Cause of Learning Disorders? John R. Kershner Barbara A. Kershner DURING THE LAST SEVERAL YEARS, numerous experi- ments have demonstrated that the two hemispheres of the human brain function differently with respect to the kinds of informa- tion each hemisphere stores and processes? The left hemisphere serves as the locus of speech and language activities and the right hemisphere is instrumental in high-order integrative visuo-spatial nonverbal functioning. In addition to this dual functional asym- metry between the cerebral hemispheres, anatomical differences between the temporal speech region on the left side and the cor- responding region of the right hemisphere have been observed.* Also, recent studies have found a marked hemispheric asymmetry in both amplitude and stability of the visually evoked potential, with the evoked response greater in the right hemisphere than in the left.3 Furthermore, electrocortical responses to speech stim- uli have been shown to be larger in the left hemisphere than in the right? Behavioral scientists working within this neuropsychological framework have found it to be a useful model for explaining lat- erality differences in the development of visual-perceptual abil- ities. For instance, since each visual half-field (VHF) projects di- rectly (via crossed and uncrossed visual pathways) http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Academic Therapy SAGE

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References (7)

Publisher
SAGE
Copyright
Copyright © by SAGE Publications
ISSN
0001-396X
DOI
10.1177/105345127300800403
Publisher site
See Article on Publisher Site

Abstract

Another Cause of Learning Disorders? John R. Kershner Barbara A. Kershner DURING THE LAST SEVERAL YEARS, numerous experi- ments have demonstrated that the two hemispheres of the human brain function differently with respect to the kinds of informa- tion each hemisphere stores and processes? The left hemisphere serves as the locus of speech and language activities and the right hemisphere is instrumental in high-order integrative visuo-spatial nonverbal functioning. In addition to this dual functional asym- metry between the cerebral hemispheres, anatomical differences between the temporal speech region on the left side and the cor- responding region of the right hemisphere have been observed.* Also, recent studies have found a marked hemispheric asymmetry in both amplitude and stability of the visually evoked potential, with the evoked response greater in the right hemisphere than in the left.3 Furthermore, electrocortical responses to speech stim- uli have been shown to be larger in the left hemisphere than in the right? Behavioral scientists working within this neuropsychological framework have found it to be a useful model for explaining lat- erality differences in the development of visual-perceptual abil- ities. For instance, since each visual half-field (VHF) projects di- rectly (via crossed and uncrossed visual pathways)

Journal

Academic Therapy SAGE

Published: Jun 1, 1973

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