The symptoms of motion sickness that cause dizziness, nausea, and discomfort appear when the central nervous system receives conflicting messages from the sensory systems. The three semicircular canals, which are connected at right angles to each other, have hair cells located at the base of each semicircular tube, and the protrusions of these cells are in the cupula. The semicircular canal contains endolymph, which causes endolymph to flow opposite to the direction of motion by inertia, which causes the cupula inside the semicircular canal to move and thus the hair cell to move to detect angular acceleration. Because endolymph is a liquid with ions such as Na+, K+, it can change the direction of the endolymph flow with the force of the electromagnetic field and the Lorentz's force created by the electrode direction, and it can also change the bending angle and pressure applied to the hair cell. The purpose of this study is to reduce the angle at which the cupula is inclined by applying a magnetic field to the endolymph of the three semicircular canals in the inner ear to change the movement direction of ions containing endolymph due to Lorentz's force. The finite element simulation model of the vestibular system is constructed to allow endolymph to flow in laminar flow at a rate of 0.2Hz in the three-semiconductor model. Then, the distance at which the cupula is tilted when the magnetic field is changed within 1T and applied to the model was measured. According to the results of the simulation and verification experiment, as the intensity of the magnetic field increased, the Lorentz's force of ions in the endolymph increased and the pressure applied to the cupula decreased as the cupula conflicted with the endolymph pressure due to rotation. The reduced pressure also reduced the distance the cupula moved. This result shows the effect of a small- intensity magnetic field on the cupula and shows that motion can be controlled. In addition, it can develop a digital twin device that can control motion sickness in real time and use a simulation model as a digital device model.
Keywords: motion sickness, electromagentic field, endolymph flow, hair cell
How to Cite:
Song, H. & Jung, S. & Hong, J., (2022) “The study of endolymph flow and hair cell control analysis simulation model through electromagnetic fields”, Proceedings of the 7th International Digital Human Modeling Symposium 7(1): 46, 3 pages. doi: https://doi.org/10.17077/dhm.31788
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