OtoRhinoLaryngology by Sfakianakis G.Alexandros Sfakianakis G.Alexandros,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,tel : 00302841026182,00306932607174
Παρασκευή 30 Ιουνίου 2017
Simultaneous masking between electric and acoustic stimulation in cochlear implant users with residual low-frequency hearing
Source:Hearing Research
Author(s): Benjamin Krüger, Andreas Büchner, Waldo Nogueira
Ipsilateral electric-acoustic stimulation (EAS) is becoming increasingly important in cochlear implant (CI) treatment. Improvements in electrode designs and surgical techniques have contributed to improved hearing preservation during implantation. Consequently, CI implantation criteria have been expanded toward people with significant residual low-frequency hearing, who may benefit from the combined use of both the electric and acoustic stimulation in the same ear. However, only few studies have investigated the mutual interaction between electric and acoustic stimulation modalities.This work characterizes the interaction between both stimulation modalities using psychophysical masking experiments and cone beam computer tomography (CBCT). Two psychophysical experiments for electric and acoustic masking were performed to measure the hearing threshold elevation of a probe stimulus in the presence of a masker stimulus. For electric masking, the probe stimulus was an acoustic tone while the masker stimulus was an electric pulse train. For acoustic masking, the probe stimulus was an electric pulse train and the masker stimulus was an acoustic tone.Five EAS users, implanted with a CI and ipsilateral residual low-frequency hearing, participated in the study. Masking was determined at different electrodes and different acoustic frequencies. CBCT scans were used to determine the individual place-pitch frequencies of the intracochlear electrode contacts by using the Stakhovskaya place-to-frequency transformation. This allows the characterization of masking as a function of the difference between electric and acoustic stimulation sites, which we term the electric-acoustic frequency difference (EAFD).The results demonstrate a significant elevation of detection thresholds for both experiments. In electric masking, acoustic-tone thresholds increased exponentially with decreasing EAFD. In contrast, for the acoustic masking experiment, threshold elevations were present regardless of the tested EAFDs. Based on the present findings, we conclude that there is an asymmetry between the electric and the acoustic masker modalities. These observations have implications for the design and fitting of EAS sound-coding strategies.
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Simultaneous masking between electric and acoustic stimulation in cochlear implant users with residual low-frequency hearing
Source:Hearing Research
Author(s): Benjamin Krüger, Andreas Büchner, Waldo Nogueira
Ipsilateral electric-acoustic stimulation (EAS) is becoming increasingly important in cochlear implant (CI) treatment. Improvements in electrode designs and surgical techniques have contributed to improved hearing preservation during implantation. Consequently, CI implantation criteria have been expanded toward people with significant residual low-frequency hearing, who may benefit from the combined use of both the electric and acoustic stimulation in the same ear. However, only few studies have investigated the mutual interaction between electric and acoustic stimulation modalities.This work characterizes the interaction between both stimulation modalities using psychophysical masking experiments and cone beam computer tomography (CBCT). Two psychophysical experiments for electric and acoustic masking were performed to measure the hearing threshold elevation of a probe stimulus in the presence of a masker stimulus. For electric masking, the probe stimulus was an acoustic tone while the masker stimulus was an electric pulse train. For acoustic masking, the probe stimulus was an electric pulse train and the masker stimulus was an acoustic tone.Five EAS users, implanted with a CI and ipsilateral residual low-frequency hearing, participated in the study. Masking was determined at different electrodes and different acoustic frequencies. CBCT scans were used to determine the individual place-pitch frequencies of the intracochlear electrode contacts by using the Stakhovskaya place-to-frequency transformation. This allows the characterization of masking as a function of the difference between electric and acoustic stimulation sites, which we term the electric-acoustic frequency difference (EAFD).The results demonstrate a significant elevation of detection thresholds for both experiments. In electric masking, acoustic-tone thresholds increased exponentially with decreasing EAFD. In contrast, for the acoustic masking experiment, threshold elevations were present regardless of the tested EAFDs. Based on the present findings, we conclude that there is an asymmetry between the electric and the acoustic masker modalities. These observations have implications for the design and fitting of EAS sound-coding strategies.
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Simultaneous masking between electric and acoustic stimulation in cochlear implant users with residual low-frequency hearing
Source:Hearing Research
Author(s): Benjamin Krüger, Andreas Büchner, Waldo Nogueira
Ipsilateral electric-acoustic stimulation (EAS) is becoming increasingly important in cochlear implant (CI) treatment. Improvements in electrode designs and surgical techniques have contributed to improved hearing preservation during implantation. Consequently, CI implantation criteria have been expanded toward people with significant residual low-frequency hearing, who may benefit from the combined use of both the electric and acoustic stimulation in the same ear. However, only few studies have investigated the mutual interaction between electric and acoustic stimulation modalities.This work characterizes the interaction between both stimulation modalities using psychophysical masking experiments and cone beam computer tomography (CBCT). Two psychophysical experiments for electric and acoustic masking were performed to measure the hearing threshold elevation of a probe stimulus in the presence of a masker stimulus. For electric masking, the probe stimulus was an acoustic tone while the masker stimulus was an electric pulse train. For acoustic masking, the probe stimulus was an electric pulse train and the masker stimulus was an acoustic tone.Five EAS users, implanted with a CI and ipsilateral residual low-frequency hearing, participated in the study. Masking was determined at different electrodes and different acoustic frequencies. CBCT scans were used to determine the individual place-pitch frequencies of the intracochlear electrode contacts by using the Stakhovskaya place-to-frequency transformation. This allows the characterization of masking as a function of the difference between electric and acoustic stimulation sites, which we term the electric-acoustic frequency difference (EAFD).The results demonstrate a significant elevation of detection thresholds for both experiments. In electric masking, acoustic-tone thresholds increased exponentially with decreasing EAFD. In contrast, for the acoustic masking experiment, threshold elevations were present regardless of the tested EAFDs. Based on the present findings, we conclude that there is an asymmetry between the electric and the acoustic masker modalities. These observations have implications for the design and fitting of EAS sound-coding strategies.
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Simultaneous masking between electric and acoustic stimulation in cochlear implant users with residual low-frequency hearing
Source:Hearing Research
Author(s): Benjamin Krüger, Andreas Büchner, Waldo Nogueira
Ipsilateral electric-acoustic stimulation (EAS) is becoming increasingly important in cochlear implant (CI) treatment. Improvements in electrode designs and surgical techniques have contributed to improved hearing preservation during implantation. Consequently, CI implantation criteria have been expanded toward people with significant residual low-frequency hearing, who may benefit from the combined use of both the electric and acoustic stimulation in the same ear. However, only few studies have investigated the mutual interaction between electric and acoustic stimulation modalities.This work characterizes the interaction between both stimulation modalities using psychophysical masking experiments and cone beam computer tomography (CBCT). Two psychophysical experiments for electric and acoustic masking were performed to measure the hearing threshold elevation of a probe stimulus in the presence of a masker stimulus. For electric masking, the probe stimulus was an acoustic tone while the masker stimulus was an electric pulse train. For acoustic masking, the probe stimulus was an electric pulse train and the masker stimulus was an acoustic tone.Five EAS users, implanted with a CI and ipsilateral residual low-frequency hearing, participated in the study. Masking was determined at different electrodes and different acoustic frequencies. CBCT scans were used to determine the individual place-pitch frequencies of the intracochlear electrode contacts by using the Stakhovskaya place-to-frequency transformation. This allows the characterization of masking as a function of the difference between electric and acoustic stimulation sites, which we term the electric-acoustic frequency difference (EAFD).The results demonstrate a significant elevation of detection thresholds for both experiments. In electric masking, acoustic-tone thresholds increased exponentially with decreasing EAFD. In contrast, for the acoustic masking experiment, threshold elevations were present regardless of the tested EAFDs. Based on the present findings, we conclude that there is an asymmetry between the electric and the acoustic masker modalities. These observations have implications for the design and fitting of EAS sound-coding strategies.
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Simultaneous masking between electric and acoustic stimulation in cochlear implant users with residual low-frequency hearing
Source:Hearing Research
Author(s): Benjamin Krüger, Andreas Büchner, Waldo Nogueira
Ipsilateral electric-acoustic stimulation (EAS) is becoming increasingly important in cochlear implant (CI) treatment. Improvements in electrode designs and surgical techniques have contributed to improved hearing preservation during implantation. Consequently, CI implantation criteria have been expanded toward people with significant residual low-frequency hearing, who may benefit from the combined use of both the electric and acoustic stimulation in the same ear. However, only few studies have investigated the mutual interaction between electric and acoustic stimulation modalities.This work characterizes the interaction between both stimulation modalities using psychophysical masking experiments and cone beam computer tomography (CBCT). Two psychophysical experiments for electric and acoustic masking were performed to measure the hearing threshold elevation of a probe stimulus in the presence of a masker stimulus. For electric masking, the probe stimulus was an acoustic tone while the masker stimulus was an electric pulse train. For acoustic masking, the probe stimulus was an electric pulse train and the masker stimulus was an acoustic tone.Five EAS users, implanted with a CI and ipsilateral residual low-frequency hearing, participated in the study. Masking was determined at different electrodes and different acoustic frequencies. CBCT scans were used to determine the individual place-pitch frequencies of the intracochlear electrode contacts by using the Stakhovskaya place-to-frequency transformation. This allows the characterization of masking as a function of the difference between electric and acoustic stimulation sites, which we term the electric-acoustic frequency difference (EAFD).The results demonstrate a significant elevation of detection thresholds for both experiments. In electric masking, acoustic-tone thresholds increased exponentially with decreasing EAFD. In contrast, for the acoustic masking experiment, threshold elevations were present regardless of the tested EAFDs. Based on the present findings, we conclude that there is an asymmetry between the electric and the acoustic masker modalities. These observations have implications for the design and fitting of EAS sound-coding strategies.
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Regulation of KCNQ/Kv7 family voltage-gated K(+) channels by lipids.
Related Articles |
Regulation of KCNQ/Kv7 family voltage-gated K(+) channels by lipids.
Biochim Biophys Acta. 2017 04;1859(4):586-597
Authors: Taylor KC, Sanders CR
Abstract
Many years of studies have established that lipids can impact membrane protein structure and function through bulk membrane effects, by direct but transient annular interactions with the bilayer-exposed surface of protein transmembrane domains, and by specific binding to protein sites. Here, we focus on how phosphatidylinositol 4,5-bisphosphate (PIP2) and polyunsaturated fatty acids (PUFAs) impact ion channel function and how the structural details of the interactions of these lipids with ion channels are beginning to emerge. We focus on the Kv7 (KCNQ) subfamily of voltage-gated K(+) channels, which are regulated by both PIP2 and PUFAs and play a variety of important roles in human health and disease. This article is part of a Special Issue entitled: Lipid order/lipid defects and lipid-control of protein activity edited by Dirk Schneider.
PMID: 27818172 [PubMed - indexed for MEDLINE]
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Language and False-Belief Task Performance in Children With Autism Spectrum Disorder
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Polysyllable Speech Accuracy and Predictors of Later Literacy Development in Preschool Children With Speech Sound Disorders
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Oticon Expands Opn Options and Hearing Resources for Teens
Oticon (https://www.oticon.com/) has added DSL rationale and a new miniRITE-T with telecoil for FM access to their Opn products for teenage hearing aid users, which they tout as their best assistive technology option for this population. The wireless technology featured in the discreet miniRITE-T design with a telecoil and double-push button can be used wherever a loop system is installed, and delivers sound directly to the users' hearing aids. The Oticon Opn is equipped with an OpenSound Navigator, which provides an open sound experience, allowing its user to focus on a conversation while staying attentive to people and things around them so they can switch focus quickly and easily. Teenage users can also connect to their favorite devices like their iPhones for direct streaming via their Bluetooth-enabled Opn hearing aids.
Oticon is also partnering with the Ida Institute to promote Telecare for Teens, a suite of easy-to-use online tools and resources that help teens self-mange and make more independent judgments about their hearing health care (http://ift.tt/2sZyZT8). These tools are designed for hearing care professionals to share with their teenage patients to help them prepare for appointments and make counseling more efficient. Audiologists can use these tools to identify communication needs and concerns and guide support for teens.
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Language and False-Belief Task Performance in Children With Autism Spectrum Disorder
from #Audiology via xlomafota13 on Inoreader http://ift.tt/2u7sAUx
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Polysyllable Speech Accuracy and Predictors of Later Literacy Development in Preschool Children With Speech Sound Disorders
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Language and False-Belief Task Performance in Children With Autism Spectrum Disorder
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Polysyllable Speech Accuracy and Predictors of Later Literacy Development in Preschool Children With Speech Sound Disorders
from #Audiology via ola Kala on Inoreader http://ift.tt/2tyioHI
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Oticon Expands Opn Options and Hearing Resources for Teens
Oticon (https://www.oticon.com/) has added DSL rationale and a new miniRITE-T with telecoil for FM access to their Opn products for teenage hearing aid users, which they tout as their best assistive technology option for this population. The wireless technology featured in the discreet miniRITE-T design with a telecoil and double-push button can be used wherever a loop system is installed, and delivers sound directly to the users' hearing aids. The Oticon Opn is equipped with an OpenSound Navigator, which provides an open sound experience, allowing its user to focus on a conversation while staying attentive to people and things around them so they can switch focus quickly and easily. Teenage users can also connect to their favorite devices like their iPhones for direct streaming via their Bluetooth-enabled Opn hearing aids.
Oticon is also partnering with the Ida Institute to promote Telecare for Teens, a suite of easy-to-use online tools and resources that help teens self-mange and make more independent judgments about their hearing health care (http://ift.tt/2sZyZT8). These tools are designed for hearing care professionals to share with their teenage patients to help them prepare for appointments and make counseling more efficient. Audiologists can use these tools to identify communication needs and concerns and guide support for teens.
from #Audiology via ola Kala on Inoreader http://ift.tt/2suGVIo
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Oticon Expands Opn Options and Hearing Resources for Teens
Oticon (https://www.oticon.com/) has added DSL rationale and a new miniRITE-T with telecoil for FM access to their Opn products for teenage hearing aid users, which they tout as their best assistive technology option for this population. The wireless technology featured in the discreet miniRITE-T design with a telecoil and double-push button can be used wherever a loop system is installed, and delivers sound directly to the users' hearing aids. The Oticon Opn is equipped with an OpenSound Navigator, which provides an open sound experience, allowing its user to focus on a conversation while staying attentive to people and things around them so they can switch focus quickly and easily. Teenage users can also connect to their favorite devices like their iPhones for direct streaming via their Bluetooth-enabled Opn hearing aids.
Oticon is also partnering with the Ida Institute to promote Telecare for Teens, a suite of easy-to-use online tools and resources that help teens self-mange and make more independent judgments about their hearing health care (http://ift.tt/2sZyZT8). These tools are designed for hearing care professionals to share with their teenage patients to help them prepare for appointments and make counseling more efficient. Audiologists can use these tools to identify communication needs and concerns and guide support for teens.
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Vanderbilt Audiology Journal Club - Bilateral Peripheral Vestibular System Impairment
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Vanderbilt Audiology Journal Club - Bilateral Peripheral Vestibular System Impairment
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Vanderbilt Audiology Journal Club - Bilateral Peripheral Vestibular System Impairment
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Influence of Sex and Age on Posterior Semicircular Canal Thickness
Audiol Neurotol 2017;22:56-59
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