Hemispheric specialisation in haptic processing

Tomlinson, Simon P and Davis, Nick J and Morgan, Helen M and Bracewell, R Martyn (2011) Hemispheric specialisation in haptic processing. Neuropsychologia, 49 (9). pp. 2703-2710. ISSN 0028-3932

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Abstract

This study investigated the organising principles of touch. We examined specialisations within the haptic system and their hemispheric distribution. Haptic processing consists of the integration of data from multiple sources to form a single percept. Previous research provides strong support for a hierarchical and functional distribution within haptic processing. We investigated hemispheric asymmetry in haptic discrimination of objects with differing textures and centres of mass. By analogy with vision it was hypothesised that participants would demonstrate a left-hand advantage for centre of mass discrimination (a 'global', presumed right hemisphere, judgement) and a right-hand advantage for surface texture judgements (a 'local', presumed left hemisphere discrimination). We found that left-handed participants showed these effects to a lesser degree than did the right-handers, consistent with the notion that left-handed people generally show weaker asymmetries in bimanual tasks. In a second experiment the effect of conflicting information on haptic percept formation was investigated. Following from the previous hypotheses it was predicted that participants would be more accurate with their right hands at judging conflicting surfaces. Contrary to predictions an advantage was demonstrated for the left hand for texture discrimination and for the right hand for centre of mass judgement.

Item Type:
Journal Article
Journal or Publication Title:
Neuropsychologia
Additional Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3200/3205
Subjects:
ID Code:
127909
Deposited By:
Deposited On:
03 Oct 2018 13:14
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 11:33