1992 Fiscal Year Final Research Report Summary
Development for Multisensory Test Battery of Visual-Vestibular-Somatosensory System
| Project/Area Number |
03670808
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Otorhinolaryngology
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| Research Institution | Toyama Medical & Pharmaceutical |
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Principal Investigator |
MIZUKOSHI Kanemasa Toyama Med. & Pharm. Univ. Prof., 医学部, 教授 (20018360)
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| Co-Investigator(Kenkyū-buntansha) |
OHASHI Naoki Toyama Med. & Pharm. Univ. Assist. Prof., 講師 (40126511)
WATANABE Yukio Toyama Med. & Pharm. Univ. Associate Prof., 医学部, 助教授 (10108037)
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| Project Period (FY) |
1991 – 1992
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| Keywords | Body Sway / Optokinetic System / Somatosensory / Integrated Test / Visual Condition |
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| Research Abstract |
In order to develop the multisensory integrated test for the visual-vestibular-somatosensory systems, we have observed on the body sway by using the Equi Test system combined with horizontal optokinetic stimuli. In 1991, we have developed the new integrated test system, in which the somatosensory and horizontal visual informations were combined in the Equi Test system. In 1992, the new integrated test system was observed on the body sway of25 normal subjects with respect to the antero-posterior (A-P) and right-left lateral translation during the four visual conditions on the fixed and moving platform for 20 seconds respectively. The four visual conditions consist of condition 1 (eyes open), condition 2 (eyes closed), condition 3 (the visual surround moved in proportion to the test subject's A-P sway) and condition 4 (eyes open in the horizontal accerelated OK stimuli). On the fixed platform, the lateral body sway was increased in correlation with the different visual conditions. On the contrary, on the moving plattform, the body sway was not so changed with the different visual conditions. Therefore, in order to detect the abnormal integration between the somatosensory and the visual informations, it is concluded that the body sway in the power spectrum should be measured on the fixed better than on the moving plattform for the dynamic integrated equilibrium test.
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