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足底刺激の違いが足関節の位置を識別する際の脳活動に及ぼす影響についてfMRIを用いて検討することを目的とした。対象は健常成人12名, 右足部を被検足とした。課題は他動運動時に足関節20°底屈位を通過した回数を被験者自身に数えることとした。その際に足底面への刺激を「突起あり」と「突起なし」の2条件とし, この違いが脳内活動に与える影響を検討した。この結果,「突起なし」条件が「突起あり」条件に比較して反対側である左半球の補足運動野が6ボクセル, 同側である右半球の縁上回が8ボクセル, 一次体性感覚野が23ボクセルと有意に賦活していた。右半球は身体内部への注意, 縁上回は身体イメージに関与するとされている。したがって,「突起なし」条件における識別課題では,「突起あり」条件に比較して感覚情報が少ないために同側の縁上回,一次体性感覚野が賦活し,この領域のネットワークが活性化したことが示唆された, The purpose of this study was to investigate the effect of brain activity at the time of the difference in stimulation to the plantar surface identifying position sense in the ankle with functional MRI. The objects were right leg of twelve healthy adults. The subjects, themselves counted the number of passing through 20 degree plantar flexion during passive movement. Stimulation to the plantar surface at that time "with projection" and "no projection" and the two conditions studied the effect of this difference in brain activity. As a result, six voxels of contralateral on the left hemisphere supplementary motor area is compared to "with projection" has "no projection" to the plantar surface, 8 voxels were significantly activated in ipsilateral on the right hemisphere supramarginal gyrus, 23 voxels were significantly activated in somatosensory cortex. The right hemisphere attention to internal body, supramarginal gyrus has been implicated in body image. Therefore, it was suggested that "no projection" exercise identified in condition, "with projections" supramarginal gyrus of the same side due to less sensory information compared to the conditions and activated the primary somatosensory cortex activation of the network in this area., 首都大学東京, 2012-03-25, 修士（理学療法学）