Hemispheric asymmetry: contributions from brain imaging

Author:

Hugdahl Kenneth12

Affiliation:

1. Department of Biological and Medical Psychology, University of Bergen, N‐5020 Bergen, Norway

2. Division of Psychiatry, Haukeland University Hospital, 5053 Bergen, Norway

Publisher

Wiley

Subject

General Psychology,General Medicine,General Neuroscience

Reference115 articles.

1. Friston describes and discusses experimental designs and analysis of functional brain imaging data with emphasis on asymmetry and lateralization in brain architecture taking examples from PET and fMRI studies. It is suggested that an important issue in neuroimaging studies of laterality is the relationship between conceptual models of brain organization and neurophysiology evidence and that this has consequences in terms of statistical models and data analysis. Hirnstein Hausmann and Güntürkün in their article argue that cerebral lateralization is a fundamental principle of brain organization across species and possible pathways for its evolutionary origin arguing that this should be advantageous for parallel processing. Hugdahl and Westerhausen in their article argue for the primacy of language and the evolution of language as a determining factor for the division of labor between the hemispheres as a means of avoiding message duplicates and slowing of information processing. The new book by Hugdahl and Westerhausen is the third in the MIT Press series on brain asymmetry (previous books are R.J. Davidson & K. Hugdahl (Eds) Brain Asymmetry 1995 and K. Hugdahl & R.J. Davidson The Asymmetrical Brain 2003). In the third volume the ambition has been to provide a comprehensive update on research on hemispheric asymmetry and laterality during the last 10 years with focus on recent developments in neuroimaging genetics and new applications in cognitive psychology neuropsychology and cognitive neuroscience. Toga and Thompson in their article give an excellent overview of structural asymmetries in the brain through the use of MR morphometry techniques. The authors review the literature on brain asymmetry focusing on structural (anatomical) differences and show how an understanding of underlying structural asymmetries may cast new light on our understanding of functional asymmetry and for cognitive factors that modulate asymmetry patterns.

2. The evolutionary origins of functional cerebral asymmetries in humans: Does lateralization enhance parallel processing?

3. Lateralization of cognitive processes in the brain

4. Sex differences in visuo-spatial processing: An fMRI study of mental rotation

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