Auditory brainstem implant program development

Schwartz, Marc S.; Wilkinson, Eric P.

doi:10.1002/lary.26312

Cited by 12 publications

(5 citation statements)

References 44 publications

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“…Only a few patients achieved open-set speech perception through ABI audition alone. These results have not greatly changed throughout the past 20 years (Schwartz et al 2008;Matthies et al 2014;Schwartz & Wilkinson 2017). Thus, most ABI patients still rely on a combination of speechreading, writing, and sign language to communicate.…”

Section: Introductionmentioning

confidence: 99%

Adult Auditory Brainstem Implant Outcomes and Three-Dimensional Electrode Array Position on Computed Tomography

et al. 2021

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Objectives: Factors contributing to auditory brainstem implant (ABI) outcomes are poorly understood. The aims of this study are to (1) characterize ABI electrode array position on postoperative imaging and (2) determine if variability in position is related to perceptual outcomes.Design: Retrospective cohort study. Subjects were selected from the adult ABI recipient population at Massachusetts Eye and Ear. Postoperative three-dimensional (3D) computed tomography (CT) reconstruction of the head was used to measure ABI array position in 20 adult ABI recipients (17 with Neurofibromatosis Type 2 (NF2) and three non-NF2 recipients). Three-dimensional electrode array position was determined based on angles from the horizontal using posterior and lateral views and on distances between the proximal array tip superiorly from the basion (D1), laterally (D2P) and posteriorly (D2L) from the midline. Array position was correlated with perceptual data (in 15 of the 20 recipients who used their ABI). Perceptual data included the number of electrodes that provided auditory sensation, location and type of side effects, level of speech perception (from no sound to open-set word recognition of monosyllables) and the amount of charge required for auditory perception.Results: Although the 3D orientation of the ABI array exhibited a variety of angles, all arrays were posteriorly tilted from the lateral view and most were medially tilted from the posterior view. ABI position relative to the basion from posterior showed mean distances of 1.71 ± 0.42 and 1.1 ± 0.29 cm for D1 and D2, respectively, and a mean D2 of 1.30 ± 0.45 cm from the lateral view. A strong linear negative correlation was found between the number of active electrodes and the distance of the proximal array tip laterally from the basion (D2P; r s = −0.73, p = 0.006) when measured in the posterior view. Although side effects were experienced in all recipients and varied in type and location across the array, electrodes in the middle part of the array tended to elicit auditory sensations while the proximal and distal tips of the array tended to elicit nonauditory side effects. Arrays with and without low charge thresholds appeared to generally overlap in position. However, the two recipients with the best (open-set) speech perception had low charge thresholds and had arrays that were tilted superiorly in the posterior view. Conclusion:ABI recipients with better speech perception appear to share a profile of arrays that are tilted superiorly as compared to recipients with lower speech perception levels. These ABI recipients have a high number of active electrodes (10 or more) and require less electrical charge on individual electrodes to achieve optimal stimulation.

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Section: Introductionmentioning

confidence: 99%

Adult Auditory Brainstem Implant Outcomes and Three-Dimensional Electrode Array Position on Computed Tomography

et al. 2021

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“…In 2005, Colletti and Shannon reported that ABI can be applied to adults and children with non-NF2 hearing loss who would not benefit from CI surgery [13]. However, the use of ABI in these patient groups is not FDA approved [14]. Although the results are not completely clear, it is known that ABI has been applied to approximately 1000 patients to date.…”

Section: Journal Of Bionic Memorymentioning

confidence: 99%

Auditory brainstem implant technology and use: Auditory implants

Güneş¹

2022

jbioni

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Cochlear implant (CI) technology is used in the treatment of deep sensorineural hearing loss (SNHL). However, an intact cochlea and an intact cochlear nerve are needed for CI applications. CI does not help in pathologies that may occur in these regions, and it is necessary to ensure the continuity of auditory conduction by direct stimulation of the cochlear nuclei. The method developed to ensure this auditory continuity is auditory brainstem implant (ABI) applications. In short, the ABI functions without the cochlea and the cochlear nerve. It does not need these structures. According to CI practices, postoperative gains are unfortunately not at the desired level. Auditory information can be helpful in lip-reading, although its benefits on speech perception are generally limited. In addition, ABI applications enable environmental sounds to be heard even if they are not fully perceived, and it is known to be beneficial on quality of life.

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“…The practical significance of the electrophysiological study of the human auditory midbrain lies in auditory midbrain implants [23,63]. Auditory brainstem implant (ABI) is an electronic device indicated for use when anatomic or functional characteristics do not allow to use of cochlear implant or other hearing technologies, such as fully implantable hearing aids and hearing aids for sound amplification.…”

Section: Introductionmentioning

confidence: 99%

Human Midbrain Participates In Mismatch Detection Without Cognitive Activity Of The Cerebral Cortex: Case Report

Kantserova¹,

Окнина²,

Masherov³

et al. 2019

Arch Clin Biomed Res

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Mismatch detection is the process of identification of rare stimuli from a sequence of stimuli. This important cognitive function is usually attributed to the cerebral cortex. To test the human midbrain involvement in sound mismatch detection, we recorded local field potentials in the states of deep anesthesia and clear consciousness from the drainage-electrode implanted in the cerebral aqueduct of an adult patient with an obstructive hydrocephaly who had undergone pineal region tumor removal through anterior interhemispheric transcallosal approach. We found a significant difference in the state of deep anesthesia at 256-364 ms after hearing a rarely presented sounds compared with frequently presented sounds and equally probable sounds. This difference was not found in the same experiment in the state of clear consciousness. The results suggest that human midbrain participates in mismatch detection and can do it even without cognitive activity of the cerebral cortex. Amplitude-frequency analysis of the midbrain records revealed that propofol affects the electrical activity of both human midbrain and cortex but the level of inhibition of the cortex is 6 times higher than the level of inhibition of the midbrain. We suppose that the human cortex is more susceptible to propofol than the human midbrain.

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Auditory brainstem implant program development

Abstract: We suggest sets of criteria necessary for the development of successful and sustaining ABI programs, including programs for NF2 patients, postlingually deafened adult nonneurofibromatosis type 2 patients, and congenitally deaf pediatric patients. Laryngoscope, 127:1909-1915, 2017.

Cited by 12 publications

References 44 publications

Adult Auditory Brainstem Implant Outcomes and Three-Dimensional Electrode Array Position on Computed Tomography

Adult Auditory Brainstem Implant Outcomes and Three-Dimensional Electrode Array Position on Computed Tomography

Auditory brainstem implant technology and use: Auditory implants

Human Midbrain Participates In Mismatch Detection Without Cognitive Activity Of The Cerebral Cortex: Case Report

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