Construction of Multi-sensory Integration Model of human postural control by Non-negative Matrix Factorization

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K06131
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Control engineering/System engineering
• Research Institution: Asahikawa Medical College
• Principal Investigator: Chiba Ryosuke 旭川医科大学, 医学部, 准教授 (80396936)
• Co-Investigator(Kenkyū-buntansha): 高草木 薫 旭川医科大学, 医学部, 教授 (10206732)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 姿勢制御

Outline of Final Research Achievements

To investigate multisensory integration in postural control of humans, we tried to verify proposed models of integration of multisensory inputs which alterations induce postural alterations. From the results of the experiments, we observed valid alterations of posture by the manipulations of the sensations physiologically. However, we found that the muscle activities are not linear summations fo each activity of sensory input and could not be explained simply by a reweighting model. As a qualitative analysis, we found out that 1) vision has large weight in postural cintrol, 2) reweighting would be caused by closing eyes, 3) reweighting would not be caused by alterations of other sensations and 4) humans would increase of body stiffness for unknown sensory inputs or discrepancy between sensory inputs.

Free Research Field

人間医工学