4 documents found, page 1 of 1
Cupula response to otoconia debris in the semicircular canal
Santos, Carla F.; Belinha, J.; Gentil, Fernanda; Parente, Marco; Jorge, Renato NatalThe vertigo symptoms are commonly related with inner ear diseases and it affects 20%-30% of the world population, and its prevalence increases with age. In this work, a three-dimensional computational model of the semicircular canal of the vestibular system, containing the fluids which promote the body balance, was used. The smoothed-particle hydrodynamics method was the computational process used to simulate t...
Using meshless methods to simulate the free vibrations of the cupula under path...
Santos, C.F.; Parente, Marco; Belinha, J.; Natal Jorge, R.M.; Gentil, FernandaEach canal of the vestibular system of the inner ear is composed of a circular path of continuum fluid. Inside each semicircular canal, it is possible to find a cupula, a gelatinous body contain-ing sensory hair cells, and the focus of this work. One of the causes of vestibular disorders is the abnormal concentration of otoconia particles near the cupula. The accurate determination of the natural frequency (fir...
Computational simulation of the vestibular system using a meshless particle method
Santos, C.F.; Parente, Marco; Belinha, J.; Natal Jorge, R.M.; Gentil, FernandaVestibular rehabilitation is the most used therapy in cases of unbalance diagnosis. The vertigo symptoms are commonly related with inner ear diseases, affecting 20%-30% of the world population (von Brevern & Neuhauser, 2011). Its prevalence is higher in elders. In this work, a three-dimensional model of the semi-circular canal of the vestibular system, containing the fluids that pro-mote body balance, will be u...
The free vibrations analysis of the cupula in the inner ear using a natural nei...
Santos, Carla F.; Belinha, J.; Gentil, Fernanda; Parente, Marco; Jorge, Renato NatalThe cupula is a part of the inner ear semi-circular canals that plays an important role in the maintenance of the human balance. In order to understand the dynamic response of the cupula, first it is necessary to obtain its vibration frequencies. A two-dimensional and three-dimensional geometrical model of the cupula was built. Then, a free vibration analysis was performed using two distinct numerical technique...