Negative BOLD during tongue movement: A functional magnetic resonance imaging study |
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| Authors: | Kiwako Sakamoto Hiroki Nakata Mauro Gianni Perrucci Cosimo Del Gratta Ryusuke Kakigi Gian Luca Romani |
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| Institution: | 1. ITAB-Institute for Advanced Biomedical Technologies, University of Chieti, Chieti, Italy;2. Department of Clinical Sciences and Bio-imaging, University of Chieti, Chieti, Italy;3. Department of Integrative Physiology, National Institute for Physiological Sciences, Okazaki, Japan;4. Advanced Research Institute for the Sciences and Humanities, Nihon University, Tokyo, Japan;5. Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan |
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| Abstract: | The aim of this functional magnetic resonance imaging (fMRI) study was to evaluate negative blood oxygen level-dependent (BOLD) signals during voluntary tongue movement. Deactivated (Negative BOLD) regions included the posterior parietal cortex (PPC), precuneus, and middle temporal gyrus. Activated (Positive BOLD) regions included the primary somatosensory-motor area (SMI), inferior parietal lobule, medial frontal gyrus, superior temporal gyrus, insula, lentiform nucleus, and thalamus. The results were not consistent with previous studies involving unilateral hand and finger movements showing the deactivation of motor-related cortical areas including the ipsilateral MI. The areas of Negative BOLD in the PPC and precuneus might reflect specific neural networks relating to voluntary tongue movement. |
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| Keywords: | fMRI PPC Precuneus Deactivation MI |
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