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The Two Halves of the BrainInformation Processing in the Cerebral Hemispheres$
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Kenneth Hugdahl and Rene Westerhausen

Print publication date: 2010

Print ISBN-13: 9780262014137

Published to MIT Press Scholarship Online: August 2013

DOI: 10.7551/mitpress/9780262014137.001.0001

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PRINTED FROM MIT PRESS SCHOLARSHIP ONLINE (www.mitpress.universitypressscholarship.com). (c) Copyright The MIT Press, 2022. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in MITSO for personal use.date: 27 June 2022

Integrating Auditory and Visual Asymmetry

Integrating Auditory and Visual Asymmetry

(p.417) 14 Integrating Auditory and Visual Asymmetry
The Two Halves of the Brain

Heikki Hämäläinen

Fiia Takio

The MIT Press

This chapter examines how auditory and visual asymmetries are integrated, and how there is a default right-sided bias for spatial perceptual and attentional capacity, which, it argues, is multimodal, including auditory and visual space, and is present in childhood and in old age. It proposes that the early developing asymmetricity in cognitive ability is balanced by later developing executive functions and cognitive control functions. The chapter shows that there is a predominantly extinct type of perceptual-attentional bias in 5-to-7-year-old children, and even more in 59-to-79-year-old seniors, a bias that is multimodal and independent of the possible linguistic nature of the stimuli. It also demonstrates the visual spatial attentional-perceptual bias, based on hemispheric functional asymmetry.

Keywords:   right-sided bias, auditory asymmetry, visual asymmetry, spatial perceptual, attentional capacity, childhood, cognitive ability, perceptual-attentional bias

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