CONCLUSION Successful hearing preservation is possible in individuals with excellent low frequency hearing. This is possible due to the partial insertion of an atraumatic electrode using an atraumatic round window surgical technique. OBJECTIVES This paper describes the round window surgical technique used to preserve excellent low frequency hearing in patients receiving partially inserted MED...

Combined rupture of Reissner's membrane and the round window membrane (double-membrane rupture) as a cause of acute profound sensorineural hearing loss was investigated in guinea pigs. Action potentials (APs) of the cochlear nerve in response to tone pip stimuli (1, 2, 4, 8kHz) were recorded before and after rupture of Reissner's membrane at each turn of the cochlea. Then the round window was p...

OBJECTIVES/HYPOTHESIS To reassess cochleostomy techniques among North American cochlear implant surgeons after a 6-year period of widespread education and research on the topic. STUDY DESIGN Prospective cohort study. METHODS A multiple-choice survey of cochlear implant techniques was distributed to surgeons attending the William House Cochlear Implant Study Group in 2006 and 2012. This surv...

OBJECTIVES As indications for cochlear implantation have expanded to include patients with more residual hearing, increasing emphasis has been placed on minimally traumatic electrode insertion. Histopathologic evaluation remains the gold standard for evaluation of cochlear trauma, but advances in imaging techniques have allowed clinicians to determine scalar electrode location in vivo. This rev...

OBJECTIVES/HYPOTHESIS The purpose of the study was to investigate whether cochlear implantation using the round window approach provided better preservation of residual hearing than the cochleostomy approach. STUDY DESIGN Case-control study. METHODS We designed a case-control study including 40 patients from a tertiary referral center who underwent cochlear implantation surgeries using devi...

HYPOTHESIS This study aimed to evaluate whether there is a difference in the degree of intracochlear trauma when the cochlear implant electrode arrays is inserted through different quadrants of the round window membrane. BACKGROUND The benefits of residual hearing preservation in cochlear implant recipients have promoted the development of atraumatic surgeries. Minimal trauma during electrode...

OBJECTIVE To validate an intracochlear piezoelectric sensor for its ability to detect intracochlear pressure and function as a microphone for a fully implantable cochlear implant. METHODS A polyvinylidene fluoride (PVDF) piezoelectric pressure sensor was inserted into a human fresh cadaveric round window at varying depths. An external sound pressure stimulus was applied to the external audito...

In this paper we consider the eeect of timedelay in the performance of the AIMD algorithm, speciically queue length and fairness for both rate and window based sources. The queue bounds can be used to allocate buuers at bottlenecks so that ows can go through without any loss.We modify the AIMD algorithm by making the additive rate increase parameter proportional to the round trip time and the d...

Our modeling of PERT is composed of three parts: window adjustment, RED emulation, and queuing behavior. We start with the window dynamics. Similar to [7], we consider a single-link scenario and assume the forward propagation delay from the source to the router is negligible and thus the round-trip time R(t) measured by the end-user at time t is composed of backward propagation delay Tp and que...