Editorial: ‘Auditory neuropathy’ and cochlear implantation — myths and facts

Gibson, W. P. R.; Graham, John M.

doi:10.1179/cim.2008.9.1.1

Cited by 17 publications

(12 citation statements)

References 16 publications

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“…The likely explanation is that there are surviving outer hair cells generating CM despite the loss of inner hair cells (Gibson and Graham, 2008). The outer hair cells distort the tuning of the basilar membrane affecting the output of the remaining inner hair cells leading to poor speech discrimination using conventional hearing aids.…”

Section: Hearing Testingmentioning

confidence: 99%

The Clinical Uses of Electrocochleography

Gibson

2017

Front. Neurosci.

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The clinical uses of electrocochleography are reviewed with some technical notes on the apparatus needed to get clear recordings under different conditions. Electrocochleography can be used to estimate auditory thresholds in difficult to test children and a golf club electrode is described. The same electrode can be used to obtain electrical auditory brainstem responses (EABR). Diagnostic testing in the clinic can be performed with a transtympanic needle electrode, and a suitable disposable monopolar electrode is described. The use of tone bursts rather than click stimuli gives a better means of diagnosis of the presence of endolymphatic hydrops. Electrocochleography can be used to monitor the cochlear function during surgery and a long coaxial cable, which can be sterilized, is needed to avoid electrical artifacts. Recently electrocochleography has been used to monitor cochlear implant insertion and to record residual hearing using an electrode on the cochlear implant array as the non-inverting (active) electrode.

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Section: Hearing Testingmentioning

confidence: 99%

The Clinical Uses of Electrocochleography

Gibson

2017

Front. Neurosci.

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“…Many of the children have proceeded to successful implantation, with a smaller number failing to gain significant benefit [91]. Gibson and Graham [92] published an editorial about this theme in 2008 where they recommend first of all a detailed investigation of auditory neuropathy patients including electrocochleography, auditory brainstem responses, and electrically evoked auditory brainstem responses, together with imaging, in order to identify the site of the underlying pathological conditions that may produce the combination of otoacoustic emissions in the absence of auditory brainstem responses in children with hearing loss. It is suggested that in 75% of cases auditory neuropathy can merely be a result of surviving outer hair cells when inner hair cell function is compromised.…”

Section: Neuropathy and Cochlear Implantmentioning

confidence: 99%

New Criteria of Indication and Selection of Patients to Cochlear Implant

Sampaio

Araújo

Oliveira

2011

International Journal of Otolaryngology

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Numerous changes continue to occur in cochlear implant candidacy. In general, these have been accompanied by concomitant and satisfactory changes in surgical techniques. Together, this has advanced the utility and safety of cochlear implantation. Most devices are now approved for use in patients with severe to profound unilateral hearing loss rather then the prior requirement of a bilateral profound loss. Furthermore, studies have begun utilizing short electrode arrays for shallow insertion in patients with considerable low-frequency residual hearing. This technique will allow the recipient to continue to use acoustically amplified hearing for the low frequencies simultaneously with a cochlear implant for the high frequencies. The advances in design of, and indications for, cochlear implants have been matched by improvements in surgical techniques and decrease in complications. The resulting improvements in safety and efficacy have further encouraged the use of these devices. This paper will review the new concepts in the candidacy of cochlear implant. Medline data base was used to search articles dealing with the following topics: cochlear implant in younger children, cochlear implant and hearing preservation, cochlear implant for unilateral deafness and tinnitus, genetic hearing loss and cochlear implant, bilateral cochlear implant, neuropathy and cochlear implant and neural plasticity, and the selection of patients for cochlear implant.

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“…It has been reported that many hearing-impaired children with auditory neuropathy had grossly abnormal ABRs but showed excellent results with cochlear implantation [11]. In order to solve this problem, methods have been developed for measuring evoked responses to electrical stimulation.…”

Section: Introductionmentioning

confidence: 99%

Electrically-Evoked Frequency-Following Response (EFFR) in the Auditory Brainstem of Guinea Pigs

Ding

Zhang

et al. 2014

PLoS ONE

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It is still a difficult clinical issue to decide whether a patient is a suitable candidate for a cochlear implant and to plan postoperative rehabilitation, especially for some special cases, such as auditory neuropathy. A partial solution to these problems is to preoperatively evaluate the functional integrity of the auditory neural pathways. For evaluating the strength of phase-locking of auditory neurons, which was not reflected in previous methods using electrically evoked auditory brainstem response (EABR), a new method for recording phase-locking related auditory responses to electrical stimulation, called the electrically evoked frequency-following response (EFFR), was developed and evaluated using guinea pigs. The main objective was to assess feasibility of the method by testing whether the recorded signals reflected auditory neural responses or artifacts. The results showed the following: 1) the recorded signals were evoked by neuron responses rather than by artifact; 2) responses evoked by periodic signals were significantly higher than those evoked by the white noise; 3) the latency of the responses fell in the expected range; 4) the responses decreased significantly after death of the guinea pigs; and 5) the responses decreased significantly when the animal was replaced by an electrical resistance. All of these results suggest the method was valid. Recording obtained using complex tones with a missing fundamental component and using pure tones with various frequencies were consistent with those obtained using acoustic stimulation in previous studies.

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Editorial: ‘Auditory neuropathy’ and cochlear implantation — myths and facts

Cited by 17 publications

References 16 publications

The Clinical Uses of Electrocochleography

The Clinical Uses of Electrocochleography

New Criteria of Indication and Selection of Patients to Cochlear Implant

Electrically-Evoked Frequency-Following Response (EFFR) in the Auditory Brainstem of Guinea Pigs

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