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《Radiologic Practice》 2018-04
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An fMRI study of human brain areas involved in attentional modulation of sensory processing

GONG-Tao;CHEN Jia-ying;ZHANG Li;School of Medical Imaging,Tianjin Medical University;  
Objective:To investigate the brain areas that were involved in the attentional modulation during sensory processing.Methods:Twenty-three healthy participants were recruited and examined using functional magnetic resonance imaging(fMRI)while receiving tactile,visual and auditory stimulation.During the experiment,subjects' attention was directed to either tactile or visual stimuli.We identified the brain areas whose activity elicited by tactile or visual stimuli was modulated by attention.We further identified the common areas whose activity was modulated by attention during both tactile and visual stimulation.These common areas were considered to be involved in attention modulation during sensory processing general to all sensory modalities,rather than specific to a particular modality.Results:Using cluster-level family-wise error(FWE)multiple comparison correction method(cluster defining threshold P0.001,corrected P0.05),we found that during both tactile and visual stimulation,the brain areas whose activity increased when subjects' attention was directed to the sensory stimuli of the corresponding modality including bilateral middle frontal gyri,the right inferior frontal gyrus,the right inferior parietal lobule,the right anterior and the mid-cingulate cortex,bilateral insula,the left caudate nucleus,the left supplementary motor area and the left cerebellum.Conclusion:These brain areas located in the frontal,parietal and cingulate cortices and the insula may play an important role in attentional modulation during sensory processing.
【Fund】: 天津市应用基础与前沿技术研究计划一般项目(15JCYBJC55100);; 国家自然科学基金面上项目(81571659)
【CateGory Index】: R338;R445.2
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