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Hemispheric Asymmetry: Contributions from Brain Imaging by Kenneth Hugdahl is a Neuroscience article available to read on EtoBox.

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## Abstract A series of studies using functional and structural magnetic resonance imaging, including diffusion tensor imaging measures also, to elucidate the aspects of hemispheric asymmetry are reviewed. It is suggested that laterality evolved as a response to the demands of language and the need for air‐based communication which may have necessitated a division of labor between the hemispheres in order to avoid having duplicate copies in both the hemispheres that would increase processing redundancy. This would have put pressure on brain structures related to the evolution of language and speech, such as the left peri‐Sylvian region. MRI data are provided showing structural and functional asymmetry in this region of the brain and how fibers connecting the right and left peri‐Sylvian regions pass through the corpus callosum. It is further suggested that the so‐called Yakelovian‐torque, i.e., the twisting of the brain along the longitudinal axis, with the right frontal and left occipital poles protruding beyond the corresponding left and right sides, was necessary for the expansion of the left peri‐Sylvian region and the right occipito‐parietal regions subserving the processing of

Who reads Hemispheric Asymmetry: Contributions from Brain Imaging?

Author

Kenneth Hugdahl

Publisher

Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1939-5078)

Published

2010

Language

EN

Field

Neuroscience (Social Sciences)