|Budget Amount *help
¥2,100,000 (Direct Cost : ¥2,100,000)
Fiscal Year 1992 : ¥600,000 (Direct Cost : ¥600,000)
Fiscal Year 1991 : ¥1,500,000 (Direct Cost : ¥1,500,000)
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.