Auditory Brainstem Implant: Part I. Auditory Performance and Its Evolution Over Time

Lenarz, Thomas; Moshrefi, M.; Matthies, Cordula; Frohne, C.; Lesinski‐Schiedat, Anke; Illg, Angelika; Rost, U; Battmer, R. D.; Samii, Madjid

doi:10.1097/00129492-200111000-00019

Cited by 96 publications

(56 citation statements)

References 8 publications

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“…All children used their ABI regularly on a daily basis, and similar to the findings in the literature, they were found to develop awareness toward environmental sounds and speech sounds after 1-month to 3-month intervals [11][12][13][14] . Functionality of auditory perception skills was mostly evaluated with MAIS/IT-MAIS in researches; however, in our research, FAPCI was conducted to determine auditory functioning and compared with normally hearing population.…”

Section: Discussionsupporting

confidence: 80%

Recent Rehabilitation Experience with Pediatric ABI Users

Yücel

Aslan²,

Özkan³

et al. 2015

Int Adv Otol

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OBJECTIVE:The aim of this study is to describe the rehabilitative outcomes of pediatric auditory brainstem implant (ABI) users in the Department of Otolaryngology in the Hacettepe University. It was a retrospective study, and all patients' files were reviewed. MATERIALS and METHODS:The data was collected from 41 children who were fitted with ABI between 2005 and 2013. Inclusion criteria for children in our study are profound, congenital bilateral sensory-neural hearing loss with anomalies (such as cochlear, labyrinthine, and cochlear nerve aplasia) and more than one year of auditory experience with ABI. Post-meningitis patients and neurofibromatosis type 2 (NF2) patients were excluded. Auditory perception was evaluated using the Meaningful Auditory Integration Scale (MAIS), Functioning after Pediatric Cochlear Implantation (FAPCI) instrument, Categories of Auditory Performance (CAP), and Children's Auditory Perception Skills Test in Turkish (CIAT). Speech intelligibility was categorized with speech intelligibility rating (SIR), and language development was assessed using the Test of Early Language Development-Third Edition (TELD-3) and Manchester Spoken Language Development Scale (MSLD). RESULTS:All patients gained basic audiological functions and were able to recognize and discriminate sounds by the third month of ABI surgery. According to the duration of ABI use and learning skills, patients revealed development from word identification to sentence recognition level in a wide spectrum. CONCLUSION:Preliminary results indicate that all children have gained basic auditory perception skills. On the other hand, language and speech development data were varying among children. Additional handicaps seemed to slow down progression. Secondary improvement was seen at psychosocial areas with respect to behavioral and social adjustment as well as eagerness to start communication.

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Section: Discussionsupporting

confidence: 80%

Recent Rehabilitation Experience with Pediatric ABI Users

Yücel

Aslan²,

Özkan³

et al. 2015

Int Adv Otol

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“…Speech results in the AMI patients, particularly for AMI-3 who is implanted in the intended target (ICC), are comparable with what are observed in ABI NF2 patients at 6 months. Of 11 ABI NF2 patients tested in our clinic using the same protocols (the same speech therapist tested all the ABI and AMI patients) (Lenarz et al, 2001), only four exceeded the 11 words per minute enhancement achieved by AMI-3. Five ABI patients performed worse than AMI-1 and AMI-2 (less than two to three words per minute).…”

Section: Speech Perception and Environmental Awarenessmentioning

confidence: 86%

“…The German speech tests below are similar to those used in our clinic for assessing CI and ABI patients (Strauss-Schier et al, 1995;Rost and Strauss-Schier, 1998;Lenarz et al, 2001). They were performed in live voice under lip reading alone, lip reading plus the AMI, and AMI alone.…”

Section: Speech Testsmentioning

confidence: 99%

Electrical Stimulation of the Midbrain for Hearing Restoration: Insight into the Functional Organization of the Human Central Auditory System

Lim¹,

Lenarz²,

Joseph³

et al. 2007

J. Neurosci.

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The cochlear implant can restore speech perception in patients with sensorineural hearing loss. However, it is ineffective for those without an implantable cochlea or a functional auditory nerve. These patients can be implanted with the auditory brainstem implant (ABI), which stimulates the surface of the cochlear nucleus. Unfortunately, the ABI has achieved limited success in its main patient group [i.e., those with neurofibromatosis type 2 (NF2)] and requires a difficult surgical procedure. These limitations have motivated us to develop a new hearing prosthesis that stimulates the midbrain with a penetrating electrode array. We recently implanted three patients with the auditory midbrain implant (AMI), and it has proven to be safe with minimal movement over time. The AMI provides loudness, pitch, temporal, and directional cues, features that have shown to be important for speech perception and more complex sound processing. Thus far, all three patients obtain enhancements in lip reading capabilities and environmental awareness and some improvements in speech perception comparable with that of NF2 ABI patients. Considering that our midbrain target is more surgically exposable than the cochlear nucleus, this argues for the use of the AMI as an alternative to the ABI. Fortunately, we were able to stimulate different midbrain regions in our patients and investigate the functional organization of the human central auditory system. These findings provide some insight into how we may need to stimulate the midbrain to improve hearing performance with the AMI.

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“…The aetiology of vestibular schwannomas is widely unknown, whereas in neurofibromatosis a polyclonal origin is suspected 8 . Neurofibromatosis type is a hereditary disease associated with VS.…”

Section: Introductionmentioning

confidence: 99%

“…The quantity and quality of hearing rehabilitation is increasing from normal hearing aids, cross-and bicross-hearing-systems, bone conducted hearing aids, middle ear implants (MOI), cochlear implantation (CI), auditory brainstem implant (ABI) and auditory midbrain implant (AMI). After surgical removal of VSs, especially in neurofibromatosis type 2 patients, the supply with ABI is in most cases an option, but several studies showed an unsatisfactory outcome 8,11,13,14 . Especially the speech perception with an ABI in adults 15 , compared to the supply in young children 16 , is a huge breakdown.…”

Section: Introductionmentioning

confidence: 99%

Cochlear implantation improves hearing and vertigo in patients after removal of vestibular schwannoma

Roemer¹,

Lenarz²,

Lesinski‐Schiedat³

2017

The International Tinnitus Journal

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Objective: With rising quality of speech perception in cochlear implant users, the indication widens. Nowadays, cochlear implantation is reasonable even in vestibular schwannoma patients. Speech perception with a cochlear implant is in these patients as promising as in patients with sensorineural hearing loss. However, the impact of cochlear implantation on vertigo and tinnitus after removal of vestibular schwannoma has not been investigated yet. Methods: In a retrospective study, we analysed 12 patients treated with a cochlear implant after removal of vestibular schwannoma. Results: In addition to a promising hearing perception -all patients reported improvement of vertigo. This improvement was also demonstrated by postural analysis. Improvement of tinnitus was achieved in 50% of the patients. Conclusion: Cochlear implantation seems a promising treatment for hearing loss, vertigo and even tinnitus in patients after removal of vestibular schwannoma. However, for successful cochlear implantation with adequate speech perception and improvement of vertigo and tinnitus, functional hearing nerve and intact inner ear anatomy is necessary.

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Auditory Brainstem Implant: Part I. Auditory Performance and Its Evolution Over Time

Abstract: Although auditory sensation appeared immediately after device activation, a period of 6 months was necessary for relearning and adaptation of the central auditory system to the altered form of auditory information presented by the auditory brainstem implant.

Cited by 96 publications

References 8 publications

Recent Rehabilitation Experience with Pediatric ABI Users

Recent Rehabilitation Experience with Pediatric ABI Users

Electrical Stimulation of the Midbrain for Hearing Restoration: Insight into the Functional Organization of the Human Central Auditory System

Cochlear implantation improves hearing and vertigo in patients after removal of vestibular schwannoma

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