Measuring the effects of attention to individual fingertips in somatosensory cortex using ultra-high field (7T) fMRI

Puckett, Alex, Bollmann, Saskia, Barth, Markus and Cunnington, Ross (2017) Measuring the effects of attention to individual fingertips in somatosensory cortex using ultra-high field (7T) fMRI. NeuroImage, 161 179-187. doi:10.1016/j.neuroimage.2017.08.014


Author Puckett, Alex
Bollmann, Saskia
Barth, Markus
Cunnington, Ross
Title Measuring the effects of attention to individual fingertips in somatosensory cortex using ultra-high field (7T) fMRI
Journal name NeuroImage   Check publisher's open access policy
ISSN 1053-8119
1095-9572
Publication date 2017-11-01
Year available 2017
Sub-type Article (original research)
DOI 10.1016/j.neuroimage.2017.08.014
Open Access Status Not yet assessed
Volume 161
Start page 179
End page 187
Total pages 9
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Abstract Attention to sensory information has been shown to modulate the neuronal processing of that information. For example, visuospatial attention acts by modulating responses at retinotopically appropriate regions of visual cortex (Puckett and DeYoe, 2015; Tootell et al. 1998). Much less, however, is known about the neuronal processing associated with attending to other modalities of sensory information. One reason for this is that visual cortex is relatively large, and therefore easier to access non-invasively in humans using tools such as functional magnetic resonance imaging (fMRI). With high-resolution fMRI, however, it is now possible to access smaller cortical areas such as primary somatosensory cortex (Martuzzi et al., 2014; Sanchez-Panchuelo et al., 2010; Schweisfurth et al. 2014; Schweizer et al. 2008). Here, we combined a novel experimental design and high-resolution fMRI at ultra-high field (7T) to measure the effects of attention to tactile stimulation in primary somatosensory cortex, S1. We find that attention modulates somatotopically appropriate regions of S1, and importantly, that this modulation can be measured at the level of the cortical representation of individual fingertips.
Keyword Positron Emission Tomography
Cerebral Blood-Flow
Human Visual-Cortex
Selective Attention
Postcentral Gyrus
Functional Mri
Tactile Attention
Brodmann Areas
Stimulation
Touch
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID APP 1088419
FT140100865
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Queensland Brain Institute Publications
School of Psychology Publications
Centre for Advanced Imaging Publications
 
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Created: Mon, 25 Sep 2017, 10:14:16 EST by Kirstie Asmussen on behalf of Queensland Brain Institute