Search Results - "Dobrev, Ivo"

Comparison of sheep and human middle-ear ossicles: anatomy and inertial properties by Péus, Dominik, Dobrev, Ivo, Pfiffner, Flurin, Sim, Jae Hoon

“…The sheep middle ear has been used in training to prepare physicians to perform surgeries and to test new ways of surgical access. This study aimed to (1)…”
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Packaging Technology for an Implantable Inner Ear MEMS Microphone by Prochazka, Lukas, Huber, Alexander, Dobrev, Ivo, Harris, Francesca, Dalbert, Adrian, Röösli, Christof, Obrist, Dominik, Pfiffner, Flurin

“…Current cochlear implant (CI) systems provide substantial benefits for patients with severe hearing loss. However, they do not allow for 24/7 hearing, mainly…”
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Influence of stimulation position on the sensitivity for bone conduction hearing aids without skin penetration by Dobrev, Ivo, Stenfelt, Stefan, Röösli, Christof, Bolt, Lucy, Pfiffner, Flurin, Gerig, Rahel, Huber, Alexander, Sim, Jae Hoon

“…Objective: This study explores the influence of stimulation position on bone conduction (BC) hearing sensitivity with a BC transducer attached using a…”
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Proof of Concept for an Intracochlear Acoustic Receiver for Use in Acute Large Animal Experiments by Pfiffner, Flurin, Prochazka, Lukas, Dobrev, Ivo, Klein, Karina, Sulser, Patrizia, Péus, Dominik, Sim, Jae Hoon, Dalbert, Adrian, Röösli, Christof, Obrist, Dominik, Huber, Alexander

“…(1) Background: The measurement of intracochlear sound pressure (ICSP) is relevant to obtain better understanding of the biomechanics of hearing. The goal of…”
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Round Window Reinforcement-Induced Changes in Intracochlear Sound Pressure by Liyanage, Nuwan, Prochazka, Lukas, Grosse, Julian, Dalbert, Adrian, Tabibi, Sonia, Chatzimichalis, Michail, Dobrev, Ivo, Kleinjung, Tobias, Huber, Alexander, Pfiffner, Flurin

“…Introduction: The round window membrane (RWM) acts as a pressure-relieving membrane for incompressible cochlear fluid. The reinforcement of the RWM has been…”
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Magnitude and phase of three-dimensional (3D) velocity vector: Application to measurement of cochlear promontory motion during bone conduction sound transmission by Dobrev, Ivo, Sim, Jae Hoon

“…Recent measurements of vibrational motion to assess sound transmission through ear structures and skull contents have included three-dimensional (3D) behavior…”
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Reference velocity of a human head in bone conduction hearing: Finite element study by Lim, Jongwoo, Dobrev, Ivo, Kim, Namkeun

“…•A 3D FE model was used to clarify the relationship between a promontory velocity and a BC hearing threshold.•The promontory velocity is not enough to show a…”
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Intracochlear pressure and temporal bone motion interaction under bone conduction stimulation by Dobrev, Ivo, Pfiffner, Flurin, Röösli, Christof

“…•The ratio between the intracochlear pressure and promontory motion is mostly independent of stimulation conditions under BC.•The bone near the otic capsule…”
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Intracochlear pressure in cadaver heads under bone conduction and intracranial fluid stimulation by Dobrev, Ivo, Farahmandi, Tahmine, Pfiffner, Flurin, Röösli, Christof

“…•Intracochlear sensor motion affects measurements.•Bone and CSF stimulation induces similar cochlear pressure, at equivalent bone motion.•Skull vault bone is…”
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Generation of distortion product otoacoustic emissions in infants with a combined air and bone conduction stimulus by Lalos, Theodoros, Dobrev, Ivo, Probst, Rudolf, Röösli, Christof

“…Evaluation of Distortion Product Otoacoustic Emissions (DPOAEs) by combining Air Conduction (AC) and Bone Conduction (BC) stimuli in infants. Measurements were…”
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Development of a finite element model of a human head including auditory periphery for understanding of bone-conducted hearing by Lim, Jongwoo, Dobrev, Ivo, Röösli, Christof, Stenfelt, Stefan, Kim, Namkeun

“…•A 3D FE model of human head was developed to investigate BC hearing mechanism.•The head model included an auditory periphery composed of ME and cochlea.•BM…”
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Influence of the Intracranial Contents on the Head Motion under Bone Conduction by von Mitzlaff, Christian, Dobrev, Ivo, Farahmandi, Tahmine, Pfiffner, Flurin, Röösli, Christof

“…The mechanism of non-osseous bone conduction pathways, involving the intracranial contents (ICC) of the skull, is still not well understood. This study aimed…”
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Experimental investigation of promontory motion and intracranial pressure following bone conduction: Stimulation site and coupling type dependence by Dobrev, Ivo, Sim, Jae Hoon, Pfiffner, Flurin, Huber, Alexander M., Röösli, Christof

“…Investigation of bone conduction sound propagation by osseous and non-osseous pathways and their interactions based upon the stimulation site and coupling…”
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Experimental investigation of the effect of middle ear in bone conduction by Dobrev, Ivo, Farahmandi, Tahmine S., Röösli, Christof

“…Experimental investigation of the contribution of the middle ear to bone conduction (BC) hearing sensation. Experiments were conducted on 6 fresh cadaver whole…”
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Effects of preloads on middle-ear transfer function and acoustic reflex in ossiculoplasty with PORP by Schär, Merlin, Dobrev, Ivo, Röösli, Christof, Huber, Alexander M., Sim, Jae Hoon

“…•Attenuation of middle-ear transfer function changes with direction of PORP preload.•PORP preloads attenuate middle-ear transfer function between…”
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In-vivo assessment of osseous versus non-osseous transmission pathways of vibratory stimuli applied to the bone and the dura in humans by Stump, Reto, Dobrev, Ivo, Krayenbühl, Niklaus, Probst, Rudolf, Röösli, Christof

“…Bone conduction (BC) is an alternative to air conduction (AC) for stimulation of the inner ear. Stimulation for BC can occur directly on the skull bone, on the…”
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Performance evaluation of a novel piezoelectric subcutaneous bone conduction device by Dobrev, Ivo, Sim, Jae Hoon, Pfiffner, Flurin, Huber, Alexander M., Röösli, Christof

“…Evaluation of the transfer function efficiency of a newly-developed piezo-electric actuator for active subcutaneous bone conduction hearing aid. The…”
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Three-dimensional quasi-static displacement of human middle-ear ossicles under static pressure loads: Measurement using a stereo camera system by Pipping, Birthe, Dobrev, Ivo, Schär, Merlin, Chatzimichalis, Michail, Röösli, Christof, Huber, Alexander M., Sim, Jae Hoon

“…•Methods to measure 3D quasi-static displacements of the middle-ear ossicles under static pressure loads have been established using a stereo-camera…”
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Wave propagation across the skull under bone conduction: Dependence on coupling methods by Farahmandi, Tahmine S., Dobrev, Ivo, Kim, Namkeun, Lim, Jongwoo, Pfiffner, Flurin, Huber, Alexander M., Röösli, Christof

“…This study is aimed at the quantitative investigation of wave propagation through the skull bone and its dependence on different coupling methods of the bone…”
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Dependence of skull surface wave propagation on stimulation sites and direction under bone conduction by Dobrev, Ivo, Farahmandi, Tahmine S., Sim, Jae Hoon, Pfiffner, Flurin, Huber, Alexander M., Röösli, Christof

“…In order to better understand bone conduction sound propagation across the skull, three-dimensional (3D) wave propagation on the skull surface was studied,…”
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