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Development of brain mechanisms for processing affective touch

Journal article
Authors Malin Björnsdotter
Ilanit Gordon
Kevin. A. Pelphrey
Håkan Olausson
Martha D. Kaiser
Published in Frontiers in Behavioral Neuroscience
Volume 8
Issue FEB
Pages 24
ISSN 1662-5153
Publication year 2014
Published at Institute of Neuroscience and Physiology
Institute of Neuroscience and Physiology, Department of Physiology
Pages 24
Language en
Links dx.doi.org/10.3389/fnbeh.2014.00024
https://gup.ub.gu.se/file/183108
Keywords Brain, Children, Development, fMRI, Touch
Subject categories Physiology

Abstract

Affective tactile stimulation plays a key role in the maturation of neural circuits, but the development of brain mechanisms processing touch is poorly understood. We therefore used functional magnetic resonance imaging (fMRI) to study brain responses to soft brush stroking of both glabrous (palm) and hairy (forearm) skin in healthy children (5-13 years), adolescents (14-17 years), and adults (25-35 years). Adult-defined regions-of-interests in the primary somatosensory cortex (SI), secondary somatosensory cortex (SII), insular cortex and right posterior superior temporal sulcus (pSTS) were significantly and similarly activated in all age groups. Whole-brain analyses revealed that responses in the ipsilateral SII were positively correlated with age in both genders, and that responses in bilateral regions near the pSTS correlated significantly and strongly with age in females but not in males. These results suggest that brain mechanisms associated with both sensory-discriminative and affective-motivational aspects of touch are largely established in school-aged children, and that there is a general continuing maturation of SII and a female-specific increase in pSTS sensitivity with age. Our work establishes a groundwork for future comparative studies of tactile processing in developmental disorders characterized by disrupted social perception such as autism. © 2014 Björnsdotter, Gordon, Pelphrey, Olausson and Kaiser.

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Denna text är utskriven från följande webbsida:
http://www.gu.se/english/research/publication/?publicationId=194593
Utskriftsdatum: 2019-11-18