人类半圆通道的离中心旋转动力学的计算研究,对现实和虚拟世界有影响
1Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, 37673, Republic of Korea.
Heliyon
|December 25, 2024
概括
人类半圆通道 (SCC) 动力学受到偏离中心旋转的显著影响. 偏移距离的增加会改变增益和时间常数,因此需要更新旋转感知模型.
科学领域:
- 垂体系统研究研究 垂体系统研究
- 生物力学 生物力学
- 人体生理学 人体生理学
背景情况:
- 当前人类旋转感知模型通常假定中心旋转,这对于现实世界的场景来说是不现实的.
- 现有的半圆通道 (SCC) 动态带宽波器模型不能充分考虑旋转轴和SCC中心之间的偏移距离.
- 由于圆顶的材料特性,实验研究和模拟模型在准确模拟SCC动态方面面临着挑战.
研究的目的:
- 在各种离中心旋转条件下研究人类半圆通道 (SCC) 动力学.
- 为了在SCC中建模内淋巴体和体的流体结构相互作用 (FSI).
- 开发一个更准确,更普遍的人类旋转感知模型.
主要方法:
- 利用有限元法 (FEM) 在SCC中建模内淋巴体和体动态.
- 采用双向流体结构相互作用 (FSI) 方法来模拟旋转运动.
- 在步速运动 (SVM),步加速运动 (SAM) 和不同偏移距离的正弦运动下比较圆顶运动.
主要成果:
- 在不同的旋转刺激 (SVM,SAM,鼻状) 中分析了圆顶位移.
- 偏移距离的增加导致了更高的增益因子.
- 偏移距离的增加导致长时间常数的减少.
结论:
- 结果表明当前以中心旋转为基础的带通波器模型的局限性.
- 为了改进SCC动态建模,建议采用对偏移距离进行计算的修改过的传递函数.
- 这项研究为理解感官冲突,空间偏差和需要精确前庭动态的应用提供了关键数据.
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