Diskrimination musikalischer Tonhöhen bei Patienten mit Kochleaimplantat

Haumann, S; Mühler, R.; Ziese, Michael; Specht, H. von

doi:10.1007/s00106-006-1485-5

Cited by 6 publications

(5 citation statements)

References 28 publications

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“…While early CI systems at the beginning of the 1980s could only provide some assistance for lip-reading, today worldwide candidates can expect open speech perception in the majority of cases [4][5][6][7][8][9][10]. Even in more sophisticated tasks like speech perception in noise [4,[6][7][8]11] as well as music perception [12][13][14][15] or speaker discrimination [16] CI subjects can expect some performance, but these tasks still remain difficult. In order to improve auditory performance, speech coding algorithms should be optimized for each individual patient using either psychophysical or objective measures.…”

Section: Introductionmentioning

confidence: 99%

Epidural recordings in cochlear implant users

et al. 2019

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Objective. In the long term it is desirable for CI users to control their device via brain signals. A possible strategy is the use of auditory evoked potentials (AEPs). Several studies have shown the suitability of auditory paradigms for such an approach. However, these investigations are based on non-invasive recordings. When thinking about everyday life applications, it would be more convenient to use implanted electrodes for signal acquisition. Ideally, the electrodes would be directly integrated into the CI. Further it is to be expected that invasively recorded signals have higher signal quality and are less affected by artifacts. Approach. In this project we investigated the feasibility of implanting epidural electrodes temporarily during CI surgery and the possibility to record AEPs in the course of several days after implantation. Intraoperatively, auditory brainstem responses were recorded, whereas various kinds of AEPs were recorded postoperatively. After a few days the epidural electrodes were removed. Main results. Data sets of ten subjects were obtained. Invasively recorded potentials were compared subjectively and objectively to clinical standard recordings using surface electrodes. Especially the cortical evoked response audiometry depicted clearer N1 waves for the epidural electrodes which were also visible at lower stimulation intensities compared to scalp electrodes. Furthermore the signal was less disturbed by artifacts. The objective quality measure (based on data sets of six patients) showed a significant better signal quality for the epidural compared to the scalp recordings. Significance. Altogether the approach revealed to be feasible and well tolerated by the patients. The epidural recordings showed a clearly better signal quality than the scalp recordings with AEPs being clearer recognizable. The results of the present study suggest that including epidural recording electrodes in future CI systems will improve the everyday life applicability of auditory closed loop systems for CI subjects.

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Section: Introductionmentioning

confidence: 99%

Epidural recordings in cochlear implant users

et al. 2019

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“…The results show a monotonic increase in hit rate when the tone difference was below the half-frequency bandwidth. It is known from former studies that even when the frequency of the sinusoidal is equal to the center frequency of an electrode contact frequency band, adjacent electrodes are stimulated as well 14 . This co-stimulation of adjacent electrodes increases for tones closer to the corner frequencies of the electrode contact and might therefore be the reason for increasing hit rates with increasing tone difference within the frequency bands.…”

Section: Discussionmentioning

confidence: 99%

“…In most studies investigating music perception in cochlear implant users, complex instrumental tones containing harmonics have been used to investigate pitch perception [13][14][15] . In discrimination experiments with complex tones, the results range from just-noticeable differences smaller than one semitone in 6 CI users with Cochlear and Advanced Bionics (Valencia, United States) devices stimulated with harmonic complex tones with 15 harmonics 16 , up to 5.7 semitones 1 .…”

Section: Abbreviationsmentioning

confidence: 99%

“…Pitch as a perceptual category of "tone height" can be encoded with different cues, such as place pitch (cochlear place of excitation) and temporal pitch (periodicity based). The latter can be divided into rate and modulation pitch for CIs [9][10][11] .In most studies investigating music perception in cochlear implant users, complex instrumental tones containing harmonics have been used to investigate pitch perception [13][14][15] . In discrimination experiments with complex tones, the results range from just-noticeable differences smaller than one semitone in 6 CI users with Cochlear and Advanced Bionics (Valencia, United States) devices stimulated with harmonic complex tones with 15 harmonics 16 , up to 5.7 semitones 1 .…”

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Pure tone discrimination with cochlear implants and filter-band spread

Wagner

Altindal

Plontke

et al. 2021

Sci Rep

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For many cochlear implant (CI) users, frequency discrimination is still challenging. We studied the effect of frequency differences relative to the electrode frequency bands on pure tone discrimination. A single-center, prospective, controlled, psychoacoustic exploratory study was conducted in a tertiary university referral center. Thirty-four patients with Cochlear Ltd. and MED-EL CIs and 19 age-matched normal-hearing control subjects were included. Two sinusoidal tones were presented with varying frequency differences. The reference tone frequency was chosen according to the center frequency of basal or apical electrodes. Discrimination abilities were psychophysically measured in a three-interval, two-alternative, forced-choice procedure (3I-2AFC) for various CI electrodes. Hit rates were measured, particularly with respect to discrimination abilities at the corner frequency of the electrode frequency-bands. The mean rate of correct decision concerning pitch difference was about 60% for CI users and about 90% for the normal-hearing control group. In CI users, the difference limen was two semitones, while normal-hearing participants detected the difference of one semitone. No influence of the corner frequency of the CI electrodes was found. In CI users, pure tone discrimination seems to be independent of tone positions relative to the corner frequency of the electrode frequency-band. Differences of 2 semitones can be distinguished within one electrode.

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“…Die CI-Träger*innen bewerteten den Klang der Marimba am angenehmsten [39], vermutlich da die Marimba als Schlaginstrument schnell in der Intensität abfallende Obertöne hat. Im Gegensatz dazu wurde die gestrichene Geige am unangenehmsten bewertet, die durch die ständige Anregung der schwingenden Saite sehr prägnante, lang anhaltende Obertöne aufweist [40].…”

Section: Introductionunclassified

Einfluss von Ober- und Untertönen auf die Melodieerkennung mit einem Cochlea-Implantat bei SSD

Schulz,

Gauer,

Martin

et al. 2023

Laryngorhinootologie

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ZusammenfassungViele Träger*innen eines Cochlea-Implantats (CI) können Tonhöhen und Melodien schlecht erkennen, da die Tonhöhenübertragung unscharf und verschoben ist. Diese Studie untersucht, ob postlingual ertaubte erwachsene CI-Träger*innen Melodien besser erkennen, wenn Obertöne entfernt oder Untertöne hinzugefügt werden.Eingeschlossen wurden 15 einseitig postlingual ertaubte CI-Träger*innen (Single Sided Deafness, SSD) im Alter von 22–73 Jahren (MW 52, SD 11,6) mit einer CI-Hörerfahrung zwischen 3 und 75 Monaten (MW 33, SD 21,0) mit verschiedenen MED-EL-Modellen. Drei kurze Klaviermelodien wurden ihnen zunächst auf dem normalhörenden Ohr und dann in veränderten Ober- oder Untertonvarianten und der Originalvariante auf dem CI-Ohr präsentiert. Die Varianten sollten als eine der 3 Originalmelodien identifiziert werden. Zusätzlich wurden die musikalischen Fähigkeiten und Erfahrungen durch den Münchner Musikfragebogen und den MiniPROMS-Musiktest erfasst.Die Melodieerkennung gelang den CI-Träger*innen am besten in der Grundfrequenzvariante. Die Obertonvariante mit dem dritten Oberton ergab eine gleichwertige Melodieerkennung wie die Originalvariante aus allen Obertönen (p=1). Indes wurde die Untertonvariante mit dem ersten Unterton signifikant schlechter als die Grundfrequenzvariante erkannt (p=0,032). Ferner zeigte sich keine Korrelation zwischen der Musikerfahrung oder den musikalischen Fähigkeiten und der Anzahl an erkannten Melodien (p>0,1).Da die Obertonreduktion die Melodieerkennung nicht verschlechtert und in anderen Arbeiten den Musikgenuss sogar verbesserte, sollte die Obertonreduktion in künftigen Musikverarbeitungsprogrammen für das CI berücksichtigt werden. Dies könnte zusätzlich den Energieverbrauch des CI reduzieren.

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Diskrimination musikalischer Tonhöhen bei Patienten mit Kochleaimplantat

Abstract: The results show that in subjects with CI pitch perception differs from instrument to instrument and is in general worse than in persons with normal hearing.

Cited by 6 publications

References 28 publications

Epidural recordings in cochlear implant users

Epidural recordings in cochlear implant users

Pure tone discrimination with cochlear implants and filter-band spread

Einfluss von Ober- und Untertönen auf die Melodieerkennung mit einem Cochlea-Implantat bei SSD

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