Nonlinearities in Cochlear Hydrodynamics

COCHLEAR IMPLANTATION IN IRAN

Cochlear implantation has become an increasingly common procedure in the rehabilitation of selected cases of profound deafness.' Patients should have profound total bilateral sensorineural hearing loss. Sound is transformed into small electric currents which stimulate the auditory nerves in the cochlea and generate the hearing sensation. The nucleus cochlear implant is the result of more t...

Nonlinearities 1 Running Head: NONLINEARITIES IN HAND AND FOOT COORDINATION Nonlinearities in Hand and Foot Coordination

Biomechanical studies performed over the past thirty years have demonstrated that the simultaneous motion of human appendages exhibits significant coordination or “synergy” and that this dependence of the motion of seemingly independent body extremities is highly nonlinear. The present paper reports new experimental research conducted with a group of subjects for the case of coupled hand and fo...

Human cochlear hydrodynamics: A high-resolution μCT-based finite element study.

Measurements of perilymph hydrodynamics in the human cochlea are scarce, being mostly limited to the fluid pressure at the basal or apical turn of the scalae vestibuli and tympani. Indeed, measurements of fluid pressure or volumetric flow rate have only been reported in animal models. In this study we imaged the human ear at 6.7 and 3-µm resolution using µCT scanning to produce highly accurate ...

Facial Nerve Stimulation in Cochlear Implant Patients

Essential nonlinearities in hearing.

Our hearing organ, the cochlea, evidently poises itself at a Hopf bifurcation to maximize tuning and amplification. We show that in this condition several effects are expected to be generic: compression of the dynamic range, infinitely sharp tuning at zero input, and generation of combination tones. These effects are "essentially" nonlinear in that they become more marked the smaller the forcin...