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Cortical processing of vestibular sensation and spatial orientation: ―a review of PET and fMRI studies― Yasushi Naito 1 1Department of Otolaryngology, Kobe City General Hospital Keyword: 大脳皮質 , 前庭 , 空間認知 , 運動 , 多重知覚収束 pp.245-254
Published Date 2005/4/10
DOI https://doi.org/10.11477/mf.1431100042
  • Abstract
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PET and fMRI studies on cortical processing of vestibular sensation and spatial orientation were reviewed. Caloric vestibular stimulation activates multiple cortical areas including the retroinsular region(parieto-insular vestibular cortex:PIVC), inferior parietal lobule, anterior cingulate gyrus, somatosensory cortex, and motion sensitive visual cortices. The activation of the PIVC and inferior parietal lobule is commonly observed in various vestibular activation studies, and was lateralized depending on the direction of the nystagmus. Visual perception of motion and space is processed primarily in the dorsal visual pathway, in which dorsal cuneus, parieto-occipital sulcus area, MT, MST and parietal cortex play essential roles. However, lingual gyrus and fusiform gyrus in the ventral pathway also play important roles in visuo-spatial perception. In the parietal cortex, the intraparietal sulcus and inferior and superior parietal lobules are activated by various tasks that are related to visual perception of orientation, location and motion in space. In addition to these areas, visuo-spatial attention activates anterior cingulate gyrus and premotor cortex, and the insula and hippocampus are activated by tasks that are related to perception and memory of self-motion, and navigation in space. Most of these regions also become active by vestibular and somatosensory stimuli, and contribute to controlling ocular and body movements. Several imaging studies have demonstrated reciprocal inhibitory interactions among visual, vestibular and somatosensory systems. Inhibitory interaction between different sensory perception systems may contribute to developing consistent and unified self-image and achieving appropriate behavior in space when they disagree.


Copyright © 2005, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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