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Frånlund K, Lindehammar H, Mäki-Torkko E, Hergils L. Cortical auditory evoked potentials (P1 latency) in children with cochlear implants in relation to clinical language tests. Int J Audiol 2024; 63:802-808. [PMID: 37933984 DOI: 10.1080/14992027.2023.2276048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 09/22/2023] [Accepted: 10/19/2023] [Indexed: 11/08/2023]
Abstract
Objective - To study the correlation between P1 latency and the results of clinical language tests (Reynell III and TROG-2), the latter were used as they are recommended for follow-up assessments of children with cochlear implants (Cis) by the Swedish National Quality Register for children with hearing impairment.Design - A clinical cohort study.Study sample - Cross-sectional and consecutive sampling of 49 children with CIs coming for clinical follow-up assessment from March 2017 - December 2019.Results - For all children tested, there was a significant negative correlation (Spearman's rho= -0.403, p = 0.011) between hearing age and P1 latency. A significant correlation between P1 latency and the Reynell III result (Spearman's rho = -0.810, p = 0.015) was found. In the TROG-2 group, there was no significant correlation between their P1 latency and their language test results (Spearman's rho -0.239, p = 0.196).Conclusion - This method seems to be feasible and easily accepted. The study was conducted in a heterogeneous group of children that we meet daily in our clinic. The results indicated that P1 latency has a negative correlation with language development among our youngest patients fitted with CIs and might be a clinical tool to assess the maturation of central auditory pathways.
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Affiliation(s)
- Karin Frånlund
- Department of Otorhinolaryngology, Linköping University Hospital, Linköping, Sweden
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Hans Lindehammar
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Department of Clinical Neurophysiology, Linköping University Hospital, Linköping, Sweden
| | - Elina Mäki-Torkko
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Audiological Research Center, Örebro University, Sweden
| | - Leif Hergils
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
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2
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Jeong H, Cleveland C, Otteson T. The association between amblyopia and the risks of hearing loss: A propensity matched analysis. Am J Otolaryngol 2024; 45:104495. [PMID: 39146824 DOI: 10.1016/j.amjoto.2024.104495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 08/01/2024] [Accepted: 08/02/2024] [Indexed: 08/17/2024]
Abstract
INTRODUCTION Amblyopia occurs due to an imbalance in the visual input between the eyes. This can induce structural changes in the central nervous system and, if left untreated, eventually lead to permanent blindness in the affected eye. As these changes may also impact the auditory system, which closely interacts with the visual system, this study aimed to investigate the risk of hearing loss in patients with amblyopia. MATERIALS AND METHODS This study was a retrospective review of the electronic medical records contained in a United States national database of medical records. Patients younger than 18 years old with and without amblyopia were matched and compared to evaluate the relative risk (RR) of having a hearing loss. Stratified analyses were further performed to explore whether the disease laterality and the amblyopia subtype influenced the risks. RESULTS Compared to the controls, patients with amblyopia had a higher overall risk of having hearing loss (RR: 1.09, CI: 1.03-1.14), specifically sensorineural hearing loss (SNHL) (RR: 1.24, CI: 1.08-1.42). The stratified analysis further revealed that SNHL was associated with refractive amblyopia (RR: 1.84, CI: 1.50-2.26), but not strabismic amblyopia (RR: 1.23, CI: 1.10-1.38). The laterality of amblyopia did not influence the risk of hearing loss. CONCLUSIONS Children with amblyopia have a higher rate of SNHL than children without amblyopia. As vision and hearing are essential in the proper cognitive development, language acquisition, and social and emotional well-being of children, patients with amblyopia may benefit from more frequent audiologic screening.
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Affiliation(s)
- Hejin Jeong
- Case Western Reserve University School of Medicine, Cleveland, OH, United States of America.
| | - Chelsea Cleveland
- Department of Otolaryngology-Head and Neck Surgery, University Hospitals Rainbow Babies and Children's Hospital, Cleveland, OH, United States of America
| | - Todd Otteson
- Case Western Reserve University School of Medicine, Cleveland, OH, United States of America; Department of Otolaryngology-Head and Neck Surgery, University Hospitals Rainbow Babies and Children's Hospital, Cleveland, OH, United States of America
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3
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Anshu K, Kristensen K, Godar SP, Zhou X, Hartley SL, Litovsky RY. Speech Recognition and Spatial Hearing in Young Adults With Down Syndrome: Relationships With Hearing Thresholds and Auditory Working Memory. Ear Hear 2024:00003446-990000000-00324. [PMID: 39090791 DOI: 10.1097/aud.0000000000001549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
OBJECTIVES Individuals with Down syndrome (DS) have a higher incidence of hearing loss (HL) compared with their peers without developmental disabilities. Little is known about the associations between HL and functional hearing for individuals with DS. This study investigated two aspects of auditory functions, "what" (understanding the content of sound) and "where" (localizing the source of sound), in young adults with DS. Speech reception thresholds in quiet and in the presence of interferers provided insight into speech recognition, that is, the "what" aspect of auditory maturation. Insights into "where" aspect of auditory maturation were gained from evaluating speech reception thresholds in colocated versus separated conditions (quantifying spatial release from masking) as well as right versus left discrimination and sound location identification. Auditory functions in the "where" domain develop during earlier stages of cognitive development in contrast with the later developing "what" functions. We hypothesized that young adults with DS would exhibit stronger "where" than "what" auditory functioning, albeit with the potential impact of HL. Considering the importance of auditory working memory and receptive vocabulary for speech recognition, we hypothesized that better speech recognition in young adults with DS, in quiet and with speech interferers, would be associated with better auditory working memory ability and receptive vocabulary. DESIGN Nineteen young adults with DS (aged 19 to 24 years) participated in the study and completed assessments on pure-tone audiometry, right versus left discrimination, sound location identification, and speech recognition in quiet and with speech interferers that were colocated or spatially separated. Results were compared with published data from children and adults without DS and HL, tested using similar protocols and stimuli. Digit Span tests assessed auditory working memory. Receptive vocabulary was examined using the Peabody Picture Vocabulary Test Fifth Edition. RESULTS Seven participants (37%) had HL in at least 1 ear; 4 individuals had mild HL, and 3 had moderate HL or worse. Participants with mild or no HL had ≥75% correct at 5° separation on the discrimination task and sound localization root mean square errors (mean ± SD: 8.73° ± 2.63°) within the range of adults in the comparison group. Speech reception thresholds in young adults with DS were higher than all comparison groups. However, spatial release from masking did not differ between young adults with DS and comparison groups. Better (lower) speech reception thresholds were associated with better hearing and better auditory working memory ability. Receptive vocabulary did not predict speech recognition. CONCLUSIONS In the absence of HL, young adults with DS exhibited higher accuracy during spatial hearing tasks as compared with speech recognition tasks. Thus, auditory processes associated with the "where" pathways appear to be a relative strength than those associated with "what" pathways in young adults with DS. Further, both HL and auditory working memory impairments contributed to difficulties in speech recognition in the presence of speech interferers. Future larger-sized samples are needed to replicate and extend our findings.
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Affiliation(s)
- Kumari Anshu
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Kayla Kristensen
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Shelly P Godar
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Xin Zhou
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Sigan L Hartley
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Department of Human Development & Family Studies, School of Human Ecology, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Ruth Y Litovsky
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Department of Communication Sciences and Disorders, University of Wisconsin-Madison, Madison, Wisconsin, USA
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Lowell R, Saucier D, Chander H, Burch R, Gillen Z. Effects of an Auditory Versus Visual Stimulus on Reaction and Response Time During Countermovement Jumps. Percept Mot Skills 2024; 131:1080-1096. [PMID: 38805403 DOI: 10.1177/00315125241256688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
Reacting and responding to an external stimulus is an important component of human performance, and they inform us about a participant's neurophysiological capabilities. Our purpose in this study was to determine whether reaction times (REACT), response times (RT), and countermovement jump (CMJ) performance differ when responding to an auditory (AUD) versus visual (VIS) stimulus. Participants were 17 college-aged volunteers (6 females and 11 males; M age = 23.0, SD = 3.4 years; M height = 174.57, SD = 10.37 cm; M body mass = 73.37, SD = 13.48 kg). Participants performed CMJs on force plates immediately upon receiving an AUD or a VIS stimulus. The AUD stimulus was a beep noise, while the VIS stimulus was a light on a screen in front of the participants. We determined REACT for the tibialis anterior (TA), medial gastrocnemius (GM), vastus lateralis (VL), and biceps femoris (BF) muscles to be the amount of time between stimulus onset and the initiation of the muscle's electromyographic (EMG) signal. We determined RT to be the amount of time between stimulus onset and the beginning of the participant's force production. We assessed CMJ performance via ground reaction forces during the unweighting, braking, and propulsive phases of the jump. We quantified EMG amplitude and frequency during each CMJ phase. We found RT to be faster to the AUD versus the VIS stimulus (p = .007). VL and BF muscles had faster REACT than TA and GM muscles (p ≤ .007). The AUD stimulus was associated with faster CMJ unweighting phase metrics (p ≤ .005). Thus, individuals may react and respond faster to an AUD versus VIS stimulus, with limited improvements in their subsequent physical performance.
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Affiliation(s)
- Russell Lowell
- Department of Kinesiology, Mississippi State University, Mississippi State, MS, USA
| | - David Saucier
- Department of Industrial & Systems Engineering, Mississippi State University, Mississippi State, MS, USA
- Human Factors & Athlete Engineering, Center for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS, USA
| | - Harish Chander
- Department of Kinesiology, Mississippi State University, Mississippi State, MS, USA
| | - Reuben Burch
- Department of Industrial & Systems Engineering, Mississippi State University, Mississippi State, MS, USA
- Human Factors & Athlete Engineering, Center for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS, USA
| | - Zachary Gillen
- Department of Kinesiology, Mississippi State University, Mississippi State, MS, USA
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Vannasing P, Dionne-Dostie E, Tremblay J, Paquette N, Collignon O, Gallagher A. Electrophysiological responses of audiovisual integration from infancy to adulthood. Brain Cogn 2024; 178:106180. [PMID: 38815526 DOI: 10.1016/j.bandc.2024.106180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 05/17/2024] [Accepted: 05/17/2024] [Indexed: 06/01/2024]
Abstract
Our ability to merge information from different senses into a unified percept is a crucial perceptual process for efficient interaction with our multisensory environment. Yet, the developmental process underlying how the brain implements multisensory integration (MSI) remains poorly known. This cross-sectional study aims to characterize the developmental patterns of audiovisual events in 131 individuals aged from 3 months to 30 years. Electroencephalography (EEG) was recorded during a passive task, including simple auditory, visual, and audiovisual stimuli. In addition to examining age-related variations in MSI responses, we investigated Event-Related Potentials (ERPs) linked with auditory and visual stimulation alone. This was done to depict the typical developmental trajectory of unisensory processing from infancy to adulthood within our sample and to contextualize the maturation effects of MSI in relation to unisensory development. Comparing the neural response to audiovisual stimuli to the sum of the unisensory responses revealed signs of MSI in the ERPs, more specifically between the P2 and N2 components (P2 effect). Furthermore, adult-like MSI responses emerge relatively late in the development, around 8 years old. The automatic integration of simple audiovisual stimuli is a long developmental process that emerges during childhood and continues to mature during adolescence with ERP latencies decreasing with age.
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Affiliation(s)
- Phetsamone Vannasing
- Neurodevelopmental Optical Imaging Laboratory (LION Lab), Sainte-Justine University Hospital Research Centre, Montreal, QC, Canada.
| | - Emmanuelle Dionne-Dostie
- Neurodevelopmental Optical Imaging Laboratory (LION Lab), Sainte-Justine University Hospital Research Centre, Montreal, QC, Canada.
| | - Julie Tremblay
- Neurodevelopmental Optical Imaging Laboratory (LION Lab), Sainte-Justine University Hospital Research Centre, Montreal, QC, Canada.
| | - Natacha Paquette
- Neurodevelopmental Optical Imaging Laboratory (LION Lab), Sainte-Justine University Hospital Research Centre, Montreal, QC, Canada.
| | - Olivier Collignon
- Institute of Psychology (IPSY) and Institute of Neuroscience (IoNS), Université Catholique de Louvain, Louvain-La-Neuve, Belgium; School of Health Sciences, HES-SO Valais-Wallis, The Sense Innovation and Research Center, Lausanne and Sion, Switzerland.
| | - Anne Gallagher
- Neurodevelopmental Optical Imaging Laboratory (LION Lab), Sainte-Justine University Hospital Research Centre, Montreal, QC, Canada; Cerebrum, Department of Psychology, University of Montreal, Montreal, Qc, Canada.
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Chumley PL, Dudding KM, Patrician P. Defining the Concept of Acoustic Neuroprotection in the Neonate: A Concept Analysis. Adv Neonatal Care 2024; 24:E58-E65. [PMID: 38907701 DOI: 10.1097/anc.0000000000001176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2024]
Abstract
BACKGROUND It has long been understood and acknowledged that the Neonatal Intensive Care Unit (NICU) environment and the transport environments are extremely loud, with both long- and short-term sequelae to the neonate, being well over the recommended amount of noise by the American Academy of Pediatrics (AAP). This problem has yet to be properly addressed. The purpose of this manuscript is to define and explain the concept of acoustic neuroprotection. While we cannot change the internal structures of the neonates' auditory system, we could change the acoustics of the environment to be support neuroprotection of these sensitive patients. EVIDENCE ACQUISITION Walker and Avant's concept analysis steps were followed to create and define the idea of acoustic neuroprotection, as it has not had a definition before. A total of 45 articles from multiple search engines were chosen. A combination of 2 concepts were used: acoustic protection and neurodevelopmental protection/support. The search was expanded past 20 years for lack of research and importance of seminal works. RESULTS To achieve acoustic neuroprotection, a neonate should not be exposed to sound greater than 45 decibels (dBa) for longer than 10 s, and exposure to sound above 80 dBa should never occur. Appropriate interventions need to include supporting the neurodevelopment of the neonate through therapeutic sound, while decreasing the amount of toxic noise exposure to safe levels. IMPLICATIONS FOR PRACTICE AND RESEARCH By further understanding and having a quantifiable goal of acoustic neuroprotection for neonates, neonatal clinicians can work together to create new interventions for how to better protect and support the care of our tiniest patients.
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Affiliation(s)
- Peyton Lewis Chumley
- UAB School of Nursing University of Alabama at Birmingham, School of Nursing, Birmingham, Alabama
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Bates JE, Marples B, Hudson MM, Williams AM, Marcus K, Howell R, Paulino A, Constine LS. Biodevelopmental Considerations in Pediatric Patients With Cancer and Childhood Cancer Survivors: A PENTEC Introductory Review. Int J Radiat Oncol Biol Phys 2024; 119:354-359. [PMID: 37966404 DOI: 10.1016/j.ijrobp.2023.09.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 09/19/2023] [Accepted: 09/30/2023] [Indexed: 11/16/2023]
Affiliation(s)
- James E Bates
- Department of Radiation Oncology, Winship Cancer Institute, Emory University, Atlanta, Georgia.
| | - Brian Marples
- Department of Radiation Oncology, Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, New York
| | - Melissa M Hudson
- Department of Oncology, St Jude Children's Research Hospital, Memphis, Tennessee
| | - AnnaLynn M Williams
- Department of Radiation Oncology, Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, New York
| | - Karen Marcus
- Department of Radiation Oncology, Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Boston, Massachusetts
| | - Rebecca Howell
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Arnold Paulino
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Louis S Constine
- Department of Radiation Oncology, Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, New York; Department of Pediatrics, University of Rochester Medical Center, Rochester, New York
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8
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Yeo XY, Kwon S, Rinai KR, Lee S, Jung S, Park R. A Consolidated Understanding of the Contribution of Redox Dysregulation in the Development of Hearing Impairment. Antioxidants (Basel) 2024; 13:598. [PMID: 38790703 PMCID: PMC11118506 DOI: 10.3390/antiox13050598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/26/2024] [Accepted: 05/09/2024] [Indexed: 05/26/2024] Open
Abstract
The etiology of hearing impairment is multifactorial, with contributions from both genetic and environmental factors. Although genetic studies have yielded valuable insights into the development and function of the auditory system, the contribution of gene products and their interaction with alternate environmental factors for the maintenance and development of auditory function requires further elaboration. In this review, we provide an overview of the current knowledge on the role of redox dysregulation as the converging factor between genetic and environmental factor-dependent development of hearing loss, with a focus on understanding the interaction of oxidative stress with the physical components of the peripheral auditory system in auditory disfunction. The potential involvement of molecular factors linked to auditory function in driving redox imbalance is an important promoter of the development of hearing loss over time.
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Affiliation(s)
- Xin Yi Yeo
- Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore;
- Department of Medical Science, College of Medicine, CHA University, Seongnam 13488, Republic of Korea;
| | - Soohyun Kwon
- Department of Medical Science, College of Medicine, CHA University, Seongnam 13488, Republic of Korea;
- Department of BioNanotechnology, Gachon University, Seongnam 13120, Republic of Korea
| | - Kimberley R. Rinai
- Department of Life Science, College of Medicine, CHA University, Seongnam 13488, Republic of Korea;
| | - Sungsu Lee
- Department of Otolaryngology-Head and Neck Surgery, Chonnam National University Hospital and Medical School, Gwangju 61469, Republic of Korea;
| | - Sangyong Jung
- Department of Medical Science, College of Medicine, CHA University, Seongnam 13488, Republic of Korea;
| | - Raekil Park
- Department of Biomedical Science and Engineering, Gwangju Institute of Science & Technology (GIST), Gwangju 61005, Republic of Korea
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9
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Cychosz M, Winn MB, Goupell MJ. How to vocode: Using channel vocoders for cochlear-implant research. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2024; 155:2407-2437. [PMID: 38568143 PMCID: PMC10994674 DOI: 10.1121/10.0025274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 02/14/2024] [Accepted: 02/23/2024] [Indexed: 04/05/2024]
Abstract
The channel vocoder has become a useful tool to understand the impact of specific forms of auditory degradation-particularly the spectral and temporal degradation that reflect cochlear-implant processing. Vocoders have many parameters that allow researchers to answer questions about cochlear-implant processing in ways that overcome some logistical complications of controlling for factors in individual cochlear implant users. However, there is such a large variety in the implementation of vocoders that the term "vocoder" is not specific enough to describe the signal processing used in these experiments. Misunderstanding vocoder parameters can result in experimental confounds or unexpected stimulus distortions. This paper highlights the signal processing parameters that should be specified when describing vocoder construction. The paper also provides guidance on how to determine vocoder parameters within perception experiments, given the experimenter's goals and research questions, to avoid common signal processing mistakes. Throughout, we will assume that experimenters are interested in vocoders with the specific goal of better understanding cochlear implants.
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Affiliation(s)
- Margaret Cychosz
- Department of Linguistics, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Matthew B Winn
- Department of Speech-Language-Hearing Sciences, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Matthew J Goupell
- Department of Hearing and Speech Sciences, University of Maryland, College Park, College Park, Maryland 20742, USA
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Cuzzuol BR, Apolonio JS, da Silva Júnior RT, de Carvalho LS, Santos LKDS, Malheiro LH, Silva Luz M, Calmon MS, Crivellaro HDL, Lemos FFB, Freire de Melo F. Usher syndrome: Genetic diagnosis and current therapeutic approaches. World J Otorhinolaryngol 2024; 11:1-17. [DOI: 10.5319/wjo.v11.i1.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/21/2023] [Accepted: 01/05/2024] [Indexed: 01/17/2024] Open
Abstract
Usher Syndrome (USH) is the most common deaf-blind syndrome, affecting approximately 1 in 6000 people in the deaf population. This genetic condition is characterized by a combination of hearing loss (HL), retinitis pigmentosa, and, in some cases, vestibular areflexia. Among the subtypes of USH, USH type 1 is considered the most severe form, presenting profound bilateral congenital deafness, vestibular areflexia, and early onset RP. USH type 2 is the most common form, exhibiting congenital moderate to severe HL for low frequencies and severe to profound HL for high frequencies. Conversely, type 3 is the rarest, initially manifesting mild symptoms during childhood that become more prominent in the first decades of life. The dual impact of USH on both visual and auditory senses significantly impairs patients’ quality of life, restricting their daily activities and interactions with society. To date, 9 genes have been confirmed so far for USH: MYO7A, USH1C, CDH23, PCDH15, USH1G, USH2A, ADGRV1, WHRN and CLRN1. These genes are inherited in an autosomal recessive manner and encode proteins expressed in the inner ear and retina, leading to functional loss. Although non-genetic methods can assist in patient triage and disease extension evaluation, genetic and molecular tests play a pivotal role in providing genetic counseling, enabling appropriate gene therapy, and facilitating timely cochlear implantation (CI). The CRISPR/Cas9 system and viral-based gene replacement therapy have recently emerged as highly promising techniques for treating USH. Regarding drug therapy, PTC-124 and Nb54 have been identified as promising drug interventions for genetic HL in USH. Simultaneously, CI has proven to be critical in the restoration of hearing. This review aims to summarize the genetic and molecular diagnosis of USH and highlight the importance of early diagnosis in guiding appropriate treatment strategies and improving patient prognosis.
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Affiliation(s)
- Beatriz Rocha Cuzzuol
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
| | - Jonathan Santos Apolonio
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
| | | | - Lorena Sousa de Carvalho
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
| | - Luana Kauany de Sá Santos
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
| | - Luciano Hasimoto Malheiro
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
| | - Marcel Silva Luz
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
| | - Mariana Santos Calmon
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
| | - Henrique de Lima Crivellaro
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
| | - Fabian Fellipe Bueno Lemos
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
| | - Fabrício Freire de Melo
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
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Hahn R, Avraham KB. Gene Therapy for Inherited Hearing Loss: Updates and Remaining Challenges. Audiol Res 2023; 13:952-966. [PMID: 38131808 PMCID: PMC10740825 DOI: 10.3390/audiolres13060083] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/13/2023] [Accepted: 11/24/2023] [Indexed: 12/23/2023] Open
Abstract
Hearing loss stands as the most prevalent sensory deficit among humans, posing a significant global health challenge. Projections indicate that by 2050, approximately 10% of the world's population will grapple with disabling hearing impairment. While approximately half of congenital hearing loss cases have a genetic etiology, traditional interventions such as hearing aids and cochlear implants do not completely restore normal hearing. The absence of biological treatment has prompted significant efforts in recent years, with a strong focus on gene therapy to address hereditary hearing loss. Although several studies have exhibited promising recovery from common forms of genetic deafness in mouse models, existing challenges must be overcome to make gene therapy applicable in the near future. Herein, we summarize the primary gene therapy strategies employed over past years, provide an overview of the recent achievements in preclinical studies for genetic hearing loss, and outline the current key obstacles to cochlear gene therapy.
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Affiliation(s)
| | - Karen B. Avraham
- Department of Human Molecular Genetics and Biochemistry, Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel;
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12
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Balk SJ, Bochner RE, Ramdhanie MA, Reilly BK. Preventing Excessive Noise Exposure in Infants, Children, and Adolescents. Pediatrics 2023; 152:e2023063753. [PMID: 37864408 DOI: 10.1542/peds.2023-063753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/27/2023] [Indexed: 10/22/2023] Open
Abstract
Noise exposure is a major cause of hearing loss in adults. Yet, noise affects people of all ages, and noise-induced hearing loss is also a problem for young people. Sensorineural hearing loss caused by noise and other toxic exposures is usually irreversible. Environmental noise, such as traffic noise, can affect learning, physiologic parameters, and quality of life. Children and adolescents have unique vulnerabilities to noise. Children may be exposed beginning in NICUs and well-baby nurseries, at home, at school, in their neighborhoods, and in recreational settings. Personal listening devices are increasingly used, even by small children. Infants and young children cannot remove themselves from noisy situations and must rely on adults to do so, children may not recognize hazardous noise exposures, and teenagers generally do not understand the consequences of high exposure to music from personal listening devices or attending concerts and dances. Environmental noise exposure has disproportionate effects on underserved communities. In this report and the accompanying policy statement, common sources of noise and effects on hearing at different life stages are reviewed. Noise-abatement interventions in various settings are discussed. Because noise exposure often starts in infancy and its effects result mainly from cumulative exposure to loud noise over long periods of time, more attention is needed to its presence in everyday activities starting early in life. Listening to music and attending dances, concerts, and celebratory and other events are sources of joy, pleasure, and relaxation for many people. These situations, however, often result in potentially harmful noise exposures. Pediatricians can potentially lessen exposures, including promotion of safer listening, by raising awareness in parents, children, and teenagers. Noise exposure is underrecognized as a serious public health issue in the United States, with exposure limits enforceable only in workplaces and not for the general public, including children and adolescents. Greater awareness of noise hazards is needed at a societal level.
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Affiliation(s)
- Sophie J Balk
- Children's Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, New York
| | - Risa E Bochner
- Department of Pediatrics, New York City Health and Hospitals Harlem, Columbia University Vagelos College of Physicians and Surgeons, New York, New York
| | | | - Brian K Reilly
- Otolaryngology and Pediatrics, George Washington University Medical School, Children's National Hospital, Washington, District of Columbia
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Schneider P, Engelmann D, Groß C, Bernhofs V, Hofmann E, Christiner M, Benner J, Bücher S, Ludwig A, Serrallach BL, Zeidler BM, Turker S, Parncutt R, Seither-Preisler A. Neuroanatomical Disposition, Natural Development, and Training-Induced Plasticity of the Human Auditory System from Childhood to Adulthood: A 12-Year Study in Musicians and Nonmusicians. J Neurosci 2023; 43:6430-6446. [PMID: 37604688 PMCID: PMC10500984 DOI: 10.1523/jneurosci.0274-23.2023] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 07/11/2023] [Accepted: 07/20/2023] [Indexed: 08/23/2023] Open
Abstract
Auditory perception is fundamental to human development and communication. However, no long-term studies have been performed on the plasticity of the auditory system as a function of musical training from childhood to adulthood. The long-term interplay between developmental and training-induced neuroplasticity of auditory processing is still unknown. We present results from AMseL (Audio and Neuroplasticity of Musical Learning), the first longitudinal study on the development of the human auditory system from primary school age until late adolescence. This 12-year project combined neurologic and behavioral methods including structural magnetic resonance imaging (MRI), magnetoencephalography (MEG), and auditory tests. A cohort of 112 typically developing participants (51 male, 61 female), classified as "musicians" (n = 66) and "nonmusicians" (n = 46), was tested at five measurement timepoints. We found substantial, stable differences in the morphology of auditory cortex (AC) between musicians and nonmusicians even at the earliest ages, suggesting that musical aptitude is manifested in macroscopic neuroanatomical characteristics. Maturational plasticity led to a continuous increase in white matter myelination and systematic changes of the auditory evoked P1-N1-P2 complex (decreasing latencies, synchronization effects between hemispheres, and amplitude changes) regardless of musical expertise. Musicians showed substantial training-related changes at the neurofunctional level, in particular more synchronized P1 responses and bilaterally larger P2 amplitudes. Musical training had a positive influence on elementary auditory perception (frequency, tone duration, onset ramp) and pattern recognition (rhythm, subjective pitch). The observed interplay between "nature" (stable biological dispositions and natural maturation) and "nurture" (learning-induced plasticity) is integrated into a novel neurodevelopmental model of the human auditory system.Significance Statement We present results from AMseL (Audio and Neuroplasticity of Musical Learning), a 12-year longitudinal study on the development of the human auditory system from childhood to adulthood that combined structural magnetic resonance imaging (MRI), magnetoencephalography (MEG), and auditory discrimination and pattern recognition tests. A total of 66 musicians and 46 nonmusicians were tested at five timepoints. Substantial, stable differences in the morphology of auditory cortex (AC) were found between the two groups even at the earliest ages, suggesting that musical aptitude is manifested in macroscopic neuroanatomical characteristics. We also observed neuroplastic and perceptual changes with age and musical practice. This interplay between "nature" (stable biological dispositions and natural maturation) and "nurture" (learning-induced plasticity) is integrated into a novel neurodevelopmental model of the human auditory system.
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Affiliation(s)
- Peter Schneider
- Centre for Systematic Musicology, University of Graz, Graz A-8010, Austria
- Department of Neurology, Section of Biomagnetism, University of Heidelberg Medical School, Heidelberg D-69120, Germany
- Division of Neuroradiology, University of Heidelberg Medical School, Heidelberg D-69120, Germany
- Latvian Academy of Music, Riga LV-1050, Latvia
| | - Dorte Engelmann
- Department of Neurology, Section of Biomagnetism, University of Heidelberg Medical School, Heidelberg D-69120, Germany
- Division of Neuroradiology, University of Heidelberg Medical School, Heidelberg D-69120, Germany
| | - Christine Groß
- Department of Neurology, Section of Biomagnetism, University of Heidelberg Medical School, Heidelberg D-69120, Germany
- Latvian Academy of Music, Riga LV-1050, Latvia
| | | | - Elke Hofmann
- School of Life Sciences, Muttenz, University of Applied Sciences and Arts Northwestern Switzerland (FHNW), Switzerland CH-4132
| | - Markus Christiner
- Centre for Systematic Musicology, University of Graz, Graz A-8010, Austria
- Department of Neurology, Section of Biomagnetism, University of Heidelberg Medical School, Heidelberg D-69120, Germany
- Latvian Academy of Music, Riga LV-1050, Latvia
| | - Jan Benner
- Division of Neuroradiology, University of Heidelberg Medical School, Heidelberg D-69120, Germany
| | - Steffen Bücher
- Department of Neurology, Section of Biomagnetism, University of Heidelberg Medical School, Heidelberg D-69120, Germany
| | - Alexander Ludwig
- Division of Neuroradiology, University of Heidelberg Medical School, Heidelberg D-69120, Germany
| | - Bettina L Serrallach
- Department of Neurology, Section of Biomagnetism, University of Heidelberg Medical School, Heidelberg D-69120, Germany
- Division of Neuroradiology, University of Heidelberg Medical School, Heidelberg D-69120, Germany
| | - Bettina M Zeidler
- Centre for Systematic Musicology, University of Graz, Graz A-8010, Austria
- Division of Neuroradiology, University of Heidelberg Medical School, Heidelberg D-69120, Germany
| | - Sabrina Turker
- Lise Meitner Research Group 'Cognition and Plasticity,' Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig D-04103, Germany
| | - Richard Parncutt
- Centre for Systematic Musicology, University of Graz, Graz A-8010, Austria
| | - Annemarie Seither-Preisler
- Centre for Systematic Musicology, University of Graz, Graz A-8010, Austria
- BioTechMed, Graz A-8010, Austria
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Syeda A, Nisha KV, Jain C. Test-Retest Reliability of Virtual Acoustic Space Identification Test in School-Going Children. Am J Audiol 2023; 32:574-582. [PMID: 37540719 DOI: 10.1044/2023_aja-22-00238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/06/2023] Open
Abstract
PURPOSE The virtual acoustic space identification (VASI) test was designed to assess spatial-hearing acuity by simulating sound location perception in a closed field (under headphones). The utility of this tool in children can be asserted only if the test results are consistent across measurement sessions, which is evaluated in this study using test-retest reliability assessments. METHOD The VASI test assessed the spatial abilities of 40 typically developing school-aged children aged 7-13 years (M age = 10.47 ± 1.83 years, 22 boys, 18 girls). The test consisted of eight virtual location percepts (with 45° separation) produced under headphones (Sennheiser HD 569). Each spatial percept was presented randomly 7 times at 65 dB SPL. Each participant completed the assessment in three measurement sessions (baseline, intrasession, and intersession). The accuracy scores at each location and overall accuracy scores were compared across the sessions. RESULTS The Shapiro-Wilk test indicated that the VASI data were not normally distributed. Intraclass correlation coefficient analysis revealed excellent test-retest reliability of the overall accuracy scores and moderate-to-high reliability of location-specific scores. This was complimented by the low response variability of the overall and location-specific accuracy scores. The Bland-Altman analysis also indicated minimal bias in VASI accuracy scores across the three sessions. CONCLUSIONS It can be concluded from the results that VASI is a reliable tool for assessing spatial-hearing acuity in school-aged children. The high test-retest reliability and ease of portability make the test highly relevant for classroom setups where early diagnosis and intervention of spatial deficits can play a critical role in determining the academic success of school-going children.
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Affiliation(s)
- Aisha Syeda
- All India Institute of Speech and Hearing, Mysuru, India
| | - K V Nisha
- All India Institute of Speech and Hearing, Mysuru, India
| | - Chandni Jain
- All India Institute of Speech and Hearing, Mysuru, India
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15
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Moysan L, Fazekas F, Fekete A, Köles L, Zelles T, Berekméri E. Ca 2+ Dynamics of Gap Junction Coupled and Uncoupled Deiters' Cells in the Organ of Corti in Hearing BALB/c Mice. Int J Mol Sci 2023; 24:11095. [PMID: 37446272 DOI: 10.3390/ijms241311095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/19/2023] [Accepted: 06/30/2023] [Indexed: 07/15/2023] Open
Abstract
ATP, as a paracrine signalling molecule, induces intracellular Ca2+ elevation via the activation of purinergic receptors on the surface of glia-like cochlear supporting cells. These cells, including the Deiters' cells (DCs), are also coupled by gap junctions that allow the propagation of intercellular Ca2+ waves via diffusion of Ca2+ mobilising second messenger IP3 between neighbouring cells. We have compared the ATP-evoked Ca2+ transients and the effect of two different gap junction (GJ) blockers (octanol and carbenoxolone, CBX) on the Ca2+ transients in DCs located in the apical and middle turns of the hemicochlea preparation of BALB/c mice (P14-19). Octanol had no effect on Ca2+ signalling, while CBX inhibited the ATP response, more prominently in the middle turn. Based on astrocyte models and using our experimental results, we successfully simulated the Ca2+ dynamics in DCs in different cochlear regions. The mathematical model reliably described the Ca2+ transients in the DCs and suggested that the tonotopical differences could originate from differences in purinoceptor and Ca2+ pump expressions and in IP3-Ca2+ release mechanisms. The cochlear turn-dependent effect of CBX might be the result of the differing connexin isoform composition of GJs along the tonotopic axis. The contribution of IP3-mediated Ca2+ signalling inhibition by CBX cannot be excluded.
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Affiliation(s)
- Louise Moysan
- Department of Zoology, University of Veterinary Medicine Budapest, H-1078 Budapest, Hungary
| | - Fruzsina Fazekas
- Department of Zoology, University of Veterinary Medicine Budapest, H-1078 Budapest, Hungary
| | - Adam Fekete
- Program in Neurosciences and Mental Health, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada
| | - László Köles
- Department of Oral Biology, Semmelweis University, H-1089 Budapest, Hungary
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, H-1089 Budapest, Hungary
| | - Tibor Zelles
- Department of Oral Biology, Semmelweis University, H-1089 Budapest, Hungary
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, H-1089 Budapest, Hungary
- Laboratory of Molecular Pharmacology, Institute of Experimental Medicine, H-1083 Budapest, Hungary
| | - Eszter Berekméri
- Department of Zoology, University of Veterinary Medicine Budapest, H-1078 Budapest, Hungary
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, H-1089 Budapest, Hungary
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Park LR, Gagnon EB, Dillon MT. Factors that influence outcomes and device use for pediatric cochlear implant recipients with unilateral hearing loss. Front Hum Neurosci 2023; 17:1141065. [PMID: 37250696 PMCID: PMC10213360 DOI: 10.3389/fnhum.2023.1141065] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 04/28/2023] [Indexed: 05/31/2023] Open
Abstract
Introduction Candidacy criteria for cochlear implantation in the United States has expanded to include children with single-sided deafness (SSD) who are at least 5 years of age. Pediatric cochlear implant (CI) users with SSD experience improved speech recognition with increased daily device use. There are few studies that report the hearing hour percentage (HHP) or the incidence of non-use for pediatric CI recipients with SSD. The aim of this study was to investigate factors that impact outcomes in children with SSD who use CIs. A secondary aim was to identify factors that impact daily device use in this population. Methods A clinical database query revealed 97 pediatric CI recipients with SSD who underwent implantation between 2014 and 2022 and had records of datalogs. The clinical test battery included speech recognition assessment for CNC words with the CI-alone and BKB-SIN with the CI plus the normal-hearing ear (combined condition). The target and masker for the BKB-SIN were presented in collocated and spatially separated conditions to evaluate spatial release from masking (SRM). Linear mixed-effects models evaluated the influence of time since activation, duration of deafness, HHP, and age at activation on performance (CNC and SRM). A separate linear mixed-effects model evaluated the main effects of age at testing, time since activation, duration of deafness, and onset of deafness (stable, progressive, or sudden) on HHP. Results Longer time since activation, shorter duration of deafness, and higher HHP were significantly correlated with better CNC word scores. Younger age at device activation was not found to be a significant predictor of CNC outcomes. There was a significant relationship between HHP and SRM, with children who had higher HHP experiencing greater SRM. There was a significant negative correlation between time since activation and age at test with HHP. Children with sudden hearing loss had a higher HHP than children with progressive and congenital hearing losses. Conclusion The present data presented here do not support a cut-off age or duration of deafness for pediatric cochlear implantation in cases of SSD. Instead, they expand on our understanding of the benefits of CI use in this population by reviewing the factors that influence outcomes in this growing patient population. Higher HHP, or greater percentage of time spent each day using bilateral input, was associated with better outcomes in the CI-alone and in the combined condition. Younger children and those within the first months of use had higher HHP. Clinicians should discuss these factors and how they may influence CI outcomes with potential candidates with SSD and their families. Ongoing work is investigating the long-term outcomes in this patient population, including whether increasing HHP after a period of limited CI use results in improved outcomes.
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Kalaivanan K, Wong PCM, Wong FCK, Chan AHD. Native Language Perceptual Sensitivity Predicts Nonnative Speech Perception Differently in Younger and Older Singaporean Bilinguals. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2023; 66:987-1017. [PMID: 36800502 DOI: 10.1044/2022_jslhr-22-00199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
PURPOSE We investigate in this study how individual variability in native language speech perception (termed Perceptual Sensitivity) influences nonnative speech perception in Singaporean Tamil-English bilinguals. Further, we assess if and how contextual and demographic factors influence Perceptual Sensitivity in the acquired languages and if the influence of Perceptual Sensitivity on nonnative speech perception is different across younger and older bilinguals. METHOD Perceptual Sensitivity in the native languages was examined by implementing Tamil and English gating tasks in 87 Singaporean Tamil-English bilinguals from two age groups (younger: 19-33 years; older: 55-70 years). Mandarin lexical tone discrimination was implemented as a measure of nonnative speech perception. RESULTS There was a wide range of variability in Perceptual Sensitivity scores in both languages across both age groups. Perceptual Sensitivity in the first native language (L1 Tamil) was a robust predictor of nonnative speech perception across both age groups, especially for the older bilinguals. However, general intelligence emerged as a stronger predictor than Tamil Perceptual Sensitivity in younger bilinguals. The influence of Tamil Perceptual Sensitivity on lexical tone perception was not tone-specific, supporting a general enhancement of lexical tone perception with better Tamil Perceptual Sensitivity. There was an influence of demographic factors on English Perceptual Sensitivity in older bilinguals, but not for Tamil and not in younger bilinguals. CONCLUSIONS Our findings corroborate with previous studies in showing that native language Perceptual Sensitivity is positively associated with and predicts nonnative speech perception in younger and older adulthood regardless of language similarity but to varying degrees. Specifically, the influence of Perceptual Sensitivity on nonnative speech perception is stronger in older adulthood, suggesting a possible shift in reliance on crystallized language knowledge with age. Proficiency and use, among other demographic and language variables, do not appear to influence L1 Perceptual Sensitivity in a lesser used language (Tamil) as significantly as previously assumed.
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Affiliation(s)
- Kastoori Kalaivanan
- Linguistics and Multilingual Studies, School of Humanities, Nanyang Technological University, Singapore
- Neuroscience and Behavioural Disorders Program, Duke-NUS Medical School, Singapore
| | - Patrick C M Wong
- Department of Linguistics and Modern Languages, The Chinese University of Hong Kong, China
- Brain and Mind Institute, The Chinese University of Hong Kong, China
| | - Francis C K Wong
- Linguistics and Multilingual Studies, School of Humanities, Nanyang Technological University, Singapore
| | - Alice H D Chan
- Linguistics and Multilingual Studies, School of Humanities, Nanyang Technological University, Singapore
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18
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Nisha KV, Uppunda AK, Konadath S. Effects of Maturation and Chronological Aging on Auditory Spatial Processing: A Cross-Sectional Study Across Life Span. Am J Audiol 2023; 32:119-134. [PMID: 36548963 DOI: 10.1044/2022_aja-22-00113] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVE The primary aim of the research was to document spatial acuity changes across the life span using a battery of psychoacoustical and perceptual tests. The secondary aim was to identify the optimal metric for measuring spatial processing changes across the life span (ages 10-70 years). DESIGN AND STUDY SAMPLE A cross-sectional study comprising 115 participants with clinically normal hearing was conducted. Purposive sampling was adopted to recruit participants in the study, who were divided into six groups based on their chronological age. METHOD Temporal, intensity, spectral, and composite correlates of spatial acuity were assessed using psychoacoustic measures and perceptual questionnaires. The temporal (interaural time difference [ITD]) and intensity correlates (interaural level difference [ILD]) of spatial perception were obtained using a MATLAB (v 2020a), whereas the composite correlate (virtual auditory space identification scores [VASIs]) and perceptual ratings of spatial processing were measured using Paradigm software and speech spatial and qualities in Kannada (SSQ-K). RESULTS Results across all tests (multivariate analyses variance: 6 age groups × 4 tests, followed by post hoc tests) consistently demonstrate poor ITD and ILD thresholds and overall lower spatial accuracy (VASI, SSQ-K) with increasing age. Discriminant function analyses (DFAs) revealed that VASI had a higher predictive power in capturing age-related changes in auditory spatial processing. The group segregation on spatial performance in DFA became evident after 50 years. CONCLUSION This study provides evidence of gradual change in all three correlates of spatial processing, with statistically demonstrable deficits appearing from fourth decade of life on VASI and fifth decade of life on binaural processing.
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Affiliation(s)
| | - Ajith Kumar Uppunda
- Department of Audiology, All India Institute of Speech and Hearing, Manasagangothri, Mysuru
| | - Sreeraj Konadath
- Department of Audiology, All India Institute of Speech and Hearing, Manasagangothri, Mysuru
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Lahlou G, Calvet C, Giorgi M, Lecomte MJ, Safieddine S. Towards the Clinical Application of Gene Therapy for Genetic Inner Ear Diseases. J Clin Med 2023; 12:1046. [PMID: 36769694 PMCID: PMC9918244 DOI: 10.3390/jcm12031046] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/20/2023] [Accepted: 01/26/2023] [Indexed: 01/31/2023] Open
Abstract
Hearing loss, the most common human sensory defect worldwide, is a major public health problem. About 70% of congenital forms and 25% of adult-onset forms of deafness are of genetic origin. In total, 136 deafness genes have already been identified and there are thought to be several hundred more awaiting identification. However, there is currently no cure for sensorineural deafness. In recent years, translational research studies have shown gene therapy to be effective against inherited inner ear diseases, and the application of this technology to humans is now within reach. We provide here a comprehensive and practical overview of current advances in gene therapy for inherited deafness, with and without an associated vestibular defect. We focus on the different gene therapy approaches, considering their prospects, including the viral vector used, and the delivery route. We also discuss the clinical application of the various strategies, their strengths, weaknesses, and the challenges to be overcome.
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Affiliation(s)
- Ghizlene Lahlou
- Institut Pasteur/Institut de l’Audition, Technologie et Thérapie Génique de la Surdité, Sorbonne Université, INSERM, 75012 Paris, France
- Département d’Oto-Rhino-Laryngologie, Unité Fonctionnelle Implants Auditifs, Groupe Hospitalo-Universitaire Pitié-Salpêtrière, APHP Sorbonne Université, 75013 Paris, France
| | - Charlotte Calvet
- Institut Pasteur/Institut de l’Audition, Technologie et Thérapie Génique de la Surdité, Sorbonne Université, INSERM, 75012 Paris, France
- Zurich Integrative Rodent Physiology (ZIRP), University of Zurich, CH-8057 Zurich, Switzerland
| | - Marie Giorgi
- Institut Pasteur/Institut de l’Audition, Technologie et Thérapie Génique de la Surdité, Sorbonne Université, INSERM, 75012 Paris, France
| | - Marie-José Lecomte
- Institut Pasteur/Institut de l’Audition, Technologie et Thérapie Génique de la Surdité, Sorbonne Université, INSERM, 75012 Paris, France
| | - Saaid Safieddine
- Institut Pasteur/Institut de l’Audition, Technologie et Thérapie Génique de la Surdité, Sorbonne Université, INSERM, 75012 Paris, France
- Centre National de la Recherche Scientifique, 75016 Paris, France
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Luo C, Gao Y, Fan J, Liu Y, Yu Y, Zhang X. Compromised word-level neural tracking in the high-gamma band for children with attention deficit hyperactivity disorder. Front Hum Neurosci 2023; 17:1174720. [PMID: 37213926 PMCID: PMC10196181 DOI: 10.3389/fnhum.2023.1174720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 04/18/2023] [Indexed: 05/23/2023] Open
Abstract
Children with attention deficit hyperactivity disorder (ADHD) exhibit pervasive difficulties in speech perception. Given that speech processing involves both acoustic and linguistic stages, it remains unclear which stage of speech processing is impaired in children with ADHD. To investigate this issue, we measured neural tracking of speech at syllable and word levels using electroencephalography (EEG), and evaluated the relationship between neural responses and ADHD symptoms in 6-8 years old children. Twenty-three children participated in the current study, and their ADHD symptoms were assessed with SNAP-IV questionnaires. In the experiment, the children listened to hierarchical speech sequences in which syllables and words were, respectively, repeated at 2.5 and 1.25 Hz. Using frequency domain analyses, reliable neural tracking of syllables and words was observed in both the low-frequency band (<4 Hz) and the high-gamma band (70-160 Hz). However, the neural tracking of words in the high-gamma band showed an anti-correlation with the ADHD symptom scores of the children. These results indicate that ADHD prominently impairs cortical encoding of linguistic information (e.g., words) in speech perception.
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Affiliation(s)
- Cheng Luo
- Research Center for Applied Mathematics and Machine Intelligence, Research Institute of Basic Theories, Zhejiang Lab, Hangzhou, China
- Cheng Luo,
| | - Yayue Gao
- Department of Psychology, School of Humanities and Social Sciences, Beihang University, Beijing, China
- *Correspondence: Yayue Gao,
| | - Jianing Fan
- Department of Psychology, School of Humanities and Social Sciences, Beihang University, Beijing, China
| | - Yang Liu
- Department of Psychology, School of Humanities and Social Sciences, Beihang University, Beijing, China
| | - Yonglin Yu
- Department of Rehabilitation, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
- Yonglin Yu,
| | - Xin Zhang
- Department of Neurology, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
- Xin Zhang,
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Breuer C, Loh K, Leist L, Fremerey S, Raake A, Klatte M, Fels J. Examining the Auditory Selective Attention Switch in a Child-Suited Virtual Reality Classroom Environment. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:16569. [PMID: 36554463 PMCID: PMC9779209 DOI: 10.3390/ijerph192416569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/05/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
The ability to focus ones attention in different acoustical environments has been thoroughly investigated in the past. However, recent technological advancements have made it possible to perform laboratory experiments in a more realistic manner. In order to investigate close-to-real-life scenarios, a classroom was modeled in virtual reality (VR) and an established paradigm to investigate the auditory selective attention (ASA) switch was translated from an audio-only version into an audiovisual VR setting. The new paradigm was validated with adult participants in a listening experiment, and the results were compared to the previous version. Apart from expected effects such as switching costs and auditory congruency effects, which reflect the robustness of the overall paradigm, a difference in error rates between the audio-only and the VR group was found, suggesting enhanced attention in the new VR setting, which is consistent with recent studies. Overall, the results suggest that the presented VR paradigm can be used and further developed to investigate the voluntary auditory selective attention switch in a close-to-real-life classroom scenario.
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Affiliation(s)
- Carolin Breuer
- Institute for Hearing Technology and Acoustics, RWTH Aachen University, 52074 Aachen, Germany
| | - Karin Loh
- Institute for Hearing Technology and Acoustics, RWTH Aachen University, 52074 Aachen, Germany
| | - Larissa Leist
- Cognitive and Developmental Psychology, University of Kaiserslautern-Landau, 67663 Kaiserslautern, Germany
| | - Stephan Fremerey
- Audiovisual Technology Group, Technische Universität Ilmenau, 98693 Ilmenau, Germany
| | - Alexander Raake
- Audiovisual Technology Group, Technische Universität Ilmenau, 98693 Ilmenau, Germany
| | - Maria Klatte
- Cognitive and Developmental Psychology, University of Kaiserslautern-Landau, 67663 Kaiserslautern, Germany
| | - Janina Fels
- Institute for Hearing Technology and Acoustics, RWTH Aachen University, 52074 Aachen, Germany
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Wimalarathna H, Ankmnal-Veeranna S, Allan C, Agrawal SK, Samarabandu J, Ladak HM, Allen P. Machine learning approaches used to analyze auditory evoked responses from the human auditory brainstem: A systematic review. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2022; 226:107118. [PMID: 36122495 DOI: 10.1016/j.cmpb.2022.107118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 08/01/2022] [Accepted: 09/06/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND The application of machine learning algorithms for assessing the auditory brainstem response has gained interest over recent years with a considerable number of publications in the literature. In this systematic review, we explore how machine learning has been used to develop algorithms to assess auditory brainstem responses. A clear and comprehensive overview is provided to allow clinicians and researchers to explore the domain and the potential translation to clinical care. METHODS The systematic review was performed based on PRISMA guidelines. A search was conducted of PubMed, IEEE-Xplore, and Scopus databases focusing on human studies that have used machine learning to assess auditory brainstem responses. The duration of the search was from January 1, 1990, to April 3, 2021. The Covidence systematic review platform (www.covidence.org) was used throughout the process. RESULTS A total of 5812 studies were found through the database search and 451 duplicates were removed. The title and abstract screening process further reduced the article count to 89 and in the proceeding full-text screening, 34 articles met our full inclusion criteria. CONCLUSION Three categories of applications were found, namely neurologic diagnosis, hearing threshold estimation, and other (does not relate to neurologic or hearing threshold estimation). Neural networks and support vector machines were the most commonly used machine learning algorithms in all three categories. Only one study had conducted a clinical trial to evaluate the algorithm after development. Challenges remain in the amount of data required to train machine learning models. Suggestions for future research avenues are mentioned with recommended reporting methods for researchers.
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Affiliation(s)
- Hasitha Wimalarathna
- Department of Electrical & Computer Engineering, Western University, London, Ontario, Canada; National Centre for Audiology, Western University, London, Ontario, Canada.
| | - Sangamanatha Ankmnal-Veeranna
- National Centre for Audiology, Western University, London, Ontario, Canada; College of Nursing and Health Professions, School of Speech and Hearing Sciences, The University of Southern Mississippi, J.B. George Building, Hattiesburg, MS, USA
| | - Chris Allan
- National Centre for Audiology, Western University, London, Ontario, Canada; School of Communication Sciences & Disorders, Western University, London, Ontario, Canada
| | - Sumit K Agrawal
- Department of Electrical & Computer Engineering, Western University, London, Ontario, Canada; National Centre for Audiology, Western University, London, Ontario, Canada; School of Biomedical Engineering, Western University, London, Ontario, Canada; Department of Medical Biophysics, Western University, London, Ontario, Canada; Department of Otolaryngology - Head and Neck Surgery, Western University, London, Ontario, Canada
| | - Jagath Samarabandu
- Department of Electrical & Computer Engineering, Western University, London, Ontario, Canada
| | - Hanif M Ladak
- Department of Electrical & Computer Engineering, Western University, London, Ontario, Canada; National Centre for Audiology, Western University, London, Ontario, Canada; School of Biomedical Engineering, Western University, London, Ontario, Canada; Department of Medical Biophysics, Western University, London, Ontario, Canada; Department of Otolaryngology - Head and Neck Surgery, Western University, London, Ontario, Canada
| | - Prudence Allen
- National Centre for Audiology, Western University, London, Ontario, Canada; School of Communication Sciences & Disorders, Western University, London, Ontario, Canada
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Zaheer HA, Parameswarappa DC, Zaheer MA, Chhablani J, Patil-Chhablani P. Ocular Manifestations in Patients with Sensorineural Hearing Loss. J Ophthalmic Vis Res 2022; 17:551-573. [PMID: 36620710 PMCID: PMC9806326 DOI: 10.18502/jovr.v17i4.12321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Accepted: 08/30/2022] [Indexed: 12/02/2022] Open
Abstract
Identification of ocular manifestations in patients with sensorineural hearing loss (SNHL) can have a large impact on the outcome and treatment of pediatric patients. Due to the common co-incidence of ocular manifestations and SNHL in children, both ophthalmologic and hearing loss screening and routine examinations must be conducted to minimize adverse outcomes and worsening of pathology. Early evaluation and diagnosis is imperative for intervention and further development of the patient. Co-incidence requires a thorough evaluation that includes a comprehensive history, examination, and diagnostic testing. In this article, a literature review was conducted to analyze the presentations of various diseases and syndromes, such as Alport Syndrome, Waardenburg Syndrome, Norrie Disease, Usher Disease, Stickler Syndrome, Marfan Syndrome, Congenital Rubella, and Hereditary Optic Neuropathies. We divided the various ocular pathologies into anterior and posterior segment presentations and associated systemic findings for better understanding. Additionally, this review aims to include an update on the management of patients with both ocular and hearing loss manifestations.
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Affiliation(s)
- Haniah A. Zaheer
- Department of Ophthalmology, University of Pittsburgh School of Medicine,
Pittsburgh, PA, USA
| | | | - Myra A. Zaheer
- School of Medicine and Health Sciences, George Washington University,
Washington DC, USA
| | - Jay Chhablani
- UPMC Eye Center, University of Pittsburgh, Pittsburgh, PA, USA
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24
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Kaiser E, Stutz R, Goedicke-Fritz S, Bous M, Zemlin M, Adams C. Noise and Critical Sound Levels During Non-Invasive Ventilation of a
Preterm Infant in the Incubator. KLINISCHE PADIATRIE 2022. [PMID: 36108643 DOI: 10.1055/a-1906-0960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Abstract
Background Preterm birth and the subsequent necessary treatment in
neonatal intensive care units (NICU) subjects the preterm infant to
non-physiological noise exposure with potentially adverse consequences for
short- and long-term development. Adjusters to improve the acoustic environment
for the preterm infant need to be defined.
Methods Sound pressure level measurements during routine procedures in a
NICU were performed by ¼” microphones placed inside and outside
the incubator. The microphones need to be suitably positioned to measure sound
pressure levels that are representative for the sound field inside and outside
the incubator. The sound pressure level spectra generated by respiratory support
and corresponding monitor alarms were compared.
Results Inside the incubator, higher sound level pressures (in dBA) were
generated primarily by the use of the system components of the incubator itself
than outside, whereas when the incubator was closed, it had an insulating effect
on sounds generated in the NICU. Non-invasive ventilation resulted in an
increase in sound pressure levels from 50 to 60 dBA in the neonate’s
environment, with sound pressure levels increasing particularly in the frequency
range above 1 kHz.
Conclusion Preterm infants are exposed to high sound levels, especially in
the non-physiological high-frequency range, particularly during non-invasive
ventilation. The continuous sound exposure could be further reduced to some
extent by an optimized design of the incubator.
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Affiliation(s)
- Elisabeth Kaiser
- Department of General Pediatrics and Neonatology, Saarland University
Hospital and Saarland University Faculty of Medicine, Homburg,
Germany
| | - Regine Stutz
- Department of General Pediatrics and Neonatology, Saarland University
Hospital and Saarland University Faculty of Medicine, Homburg,
Germany
| | - Sybelle Goedicke-Fritz
- Department of General Pediatrics and Neonatology, Saarland University
Hospital and Saarland University Faculty of Medicine, Homburg,
Germany
| | - Michelle Bous
- Department of General Pediatrics and Neonatology, Saarland University
Hospital and Saarland University Faculty of Medicine, Homburg,
Germany
| | - Michael Zemlin
- Department of General Pediatrics and Neonatology, Saarland University
Hospital and Saarland University Faculty of Medicine, Homburg,
Germany
| | - Christian Adams
- Department of Mechanical Engineering, Technical University of
Darmstadt, Darmstadt, Germany
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25
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A Study on the Reference Values and Cutoff Criteria of Masking Level Difference for Children Aged 7–12 Years. J Clin Med 2022; 11:jcm11185282. [PMID: 36142927 PMCID: PMC9501130 DOI: 10.3390/jcm11185282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 08/30/2022] [Accepted: 09/02/2022] [Indexed: 11/17/2022] Open
Abstract
The Masking Level Difference (MLD) test is one of the main instruments for investigating binaural interaction. Studies with children aged 7–12 years still disagree about the influence of age on test performance and present discordant reference values. This study aimed to verify the effect of age on the performance of children aged 7–12 years in the MLD test and to establish reference values and cutoff criteria for this age group. Fifty-nine children with normal hearing were organized in three groups according to their age: 7–8 (n = 20), 9–10 (n = 20), and 11–12 (n = 19) years. The participants completed the MLD test by Auditec®. The Kruskal–Wallis statistical test was used to compare groups. Reference values were obtained by calculating mean, standard deviation, median, mode, and percentiles, while the cutoff criterion was obtained by subtracting two standard deviations from the mean. No statistically significant differences were observed between the groups regarding the MLD test measures. The mean MLD was 10.51 ± 1.84 dB and the cutoff point was set at 7 dB. Thus, reference values for the MLD test were established for children aged 7–12 years, who presented no effect of age on test performance.
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26
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Ryn FV, Lüders D, Casali RL, do Amaral MIR. Temporal auditory processing in people exposed to musical instrument practice. Codas 2022; 34:e20210256. [PMID: 36043598 PMCID: PMC9886294 DOI: 10.1590/2317-1782/20212021256pt] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 01/03/2022] [Indexed: 12/23/2022] Open
Abstract
PURPOSE To investigate the influence of musical instrument practice on temporal auditory abilities and on the results of cortical potentials related to auditory events (P300) in a group of young musicians compared to individuals without experience in musical practice. METHODS This is a prospective cross-sectional observational study. In total, 34 individuals between 18 and 30 years old, of both sexes, took part and were divided in two groups: Group I (GI), composed of musicians (n=16), and Group II (GII), composed of non-musicians (n=18). All participants underwent behavioral evaluation of temporal auditory processing, composed of Duration Pattern Sequence Test (DPS), Pitch Pattern Sequence Test (PPS), Random Gap Detection Test (RGDT) and electrophysiological evaluation - Long Latency Auditory Evoked Potential - P300. GI also answered a specific questionnaire to characterize musical practice. RESULTS We observed statistically significant differences with superior performance of GI compared with GII in all behavioral tests (p<0.001*). The groups' performance was similar regarding the latency and amplitude parameters analyzed from LLAEP-300 data (p>0.05). CONCLUSION The findings show a positive influence of musical practice toward the improvement of auditory abilities of temporal ordering and resolution. All participants presented adequate cortical functioning of the central auditory nervous system, without significant differences between musicians and non-musicians when considering P300 amplitude and latency.
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Affiliation(s)
- Flavio Van Ryn
- Departamento de Fonoaudiologia, Universidade Estadual do Centro Oeste – UNICENTRO - Irati (PR), Brasil.
| | - Débora Lüders
- Programa de Pós-graduação Stricto Sensu em Distúrbios da Comunicação, Universidade Tuiuti do Paraná - Curitiba (PR), Brasil.
| | - Raquel Leme Casali
- Departamento de Desenvolvimento Humano e Reabilitação, Faculdade de Ciências Médicas, Universidade Estadual de Campinas – UNICAMP - Campinas (SP), Brasil.
| | - Maria Isabel Ramos do Amaral
- Departamento de Desenvolvimento Humano e Reabilitação, Faculdade de Ciências Médicas, Universidade Estadual de Campinas – UNICAMP - Campinas (SP), Brasil.
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Xu Z, Tu S, Pass C, Zhang Y, Liu H, Diers J, Fu Y, He DZZ, Zuo J. Profiling mouse cochlear cell maturation using 10× Genomics single-cell transcriptomics. Front Cell Neurosci 2022; 16:962106. [PMID: 36060279 PMCID: PMC9434313 DOI: 10.3389/fncel.2022.962106] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 07/26/2022] [Indexed: 11/13/2022] Open
Abstract
Juvenile and mature mouse cochleae contain various low-abundant, vulnerable sensory epithelial cells embedded in the calcified temporal bone, making it challenging to profile the dynamic transcriptome changes of these cells during maturation at the single-cell level. Here we performed the 10x Genomics single-cell RNA sequencing (scRNA-seq) of mouse cochleae at postnatal days 14 (P14) and 28. We attained the transcriptomes of multiple cell types, including hair cells, supporting cells, spiral ganglia, stria fibrocytes, and immune cells. Our hair cell scRNA-seq datasets are consistent with published transcripts from bulk RNA-seq. We also mapped known deafness genes to corresponding cochlear cell types. Importantly, pseudotime trajectory analysis revealed that inner hair cell maturation peaks at P14 while outer hair cells continue development until P28. We further identified and confirmed a long non-coding RNA gene Miat to be expressed during maturation in cochlear hair cells and spiral ganglia neurons, and Pcp4 to be expressed during maturation in cochlear hair cells. Our transcriptomes of juvenile and mature mouse cochlear cells provide the sequel to those previously published at late embryonic and early postnatal ages and will be valuable resources to investigate cochlear maturation at the single-cell resolution.
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Affiliation(s)
- Zhenhang Xu
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, United States
| | - Shu Tu
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, United States
| | - Caroline Pass
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, United States
| | - Yan Zhang
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, United States
| | - Huizhan Liu
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, United States
| | - Jack Diers
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, United States
| | - Yusi Fu
- Lynch Comprehensive Cancer Research Center, Creighton University School of Medicine, Omaha, NE, United States
| | - David Z. Z. He
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, United States
| | - Jian Zuo
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, United States
- *Correspondence: Jian Zuo,
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Ding S, Huang X, Li X, Shen Y, Yang L. Effects of maternal voice on painful procedures in preterm and full‐term infants: A systematic review and meta‐analysis. Nurs Crit Care 2022. [DOI: 10.1111/nicc.12811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Shenglan Ding
- Department of Pediatric Surgery Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and technology of China Chengdu China
| | - Xiuhua Huang
- Department of Pediatric Surgery Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and technology of China Chengdu China
| | - Xue Li
- Department of Pediatric Surgery Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and technology of China Chengdu China
| | - Yi Shen
- Department of Pediatric Surgery Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and technology of China Chengdu China
| | - Lili Yang
- Department of Pediatric Surgery Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and technology of China Chengdu China
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29
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Lee L, Chang YH, Liang WJ, Huang YC. The Effect of Music Intervention on Fetal Education via Doppler Fetal Monitor. CHILDREN 2022; 9:children9060918. [PMID: 35740853 PMCID: PMC9221695 DOI: 10.3390/children9060918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/16/2022] [Accepted: 06/16/2022] [Indexed: 12/02/2022]
Abstract
This study focused on the effects of music intervention on fetal education in pregnant women. The fetal heart rate of the fetus at 30–38 weeks of gestational age was monitored by an ultrasound Doppler fetal monitor, and differences in the frequency of fetal movement responses to familiar and unfamiliar music courses were recorded and analyzed. The analysis results showed that the fetuses had less fetal movement to fixed singing activities, with a mean of 0.7 and a standard deviation of 0.79. On the contrary, the fetuses had significant fetal movement responses to irregular singing, with a mean of 1.73 and a standard deviation of 1.37. The results showed that the fetus receives external sounds through hearing, and a pregnant woman singing fixed music to her fetus can stabilize the frequency of fetal movement, promote the health of herself and the fetus, and establish maternal-fetal bonding.
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Affiliation(s)
- Liza Lee
- Department of Early Childhood Development and Education, Chaoyang University of Technology, Taichung 413310, Taiwan;
| | - Yu-Hsin Chang
- Department of Marketing and Logistics Management, Chaoyang University of Technology, Taichung 413310, Taiwan;
| | - Wei-Ju Liang
- Ph.D. Program Business Administration in Industrial Development, Department of Business Administration, Chaoyang University of Technology, Taichung 413310, Taiwan
- Correspondence:
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30
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Narrative Review of Loudness Perception Measures in Children. Ear Hear 2022; 43:1635-1642. [DOI: 10.1097/aud.0000000000001243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Namiranian R, Rahimi Malakshan S, Abrishami Moghaddam H, Khadem A, Jafari R. Normal development of the brain: a survey of joint structural-functional brain studies. Rev Neurosci 2022; 33:745-765. [PMID: 35304982 DOI: 10.1515/revneuro-2022-0017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 02/17/2022] [Indexed: 11/15/2022]
Abstract
Joint structural-functional (S-F) developmental studies present a novel approach to address the complex neuroscience questions on how the human brain works and how it matures. Joint S-F biomarkers have the inherent potential to model effectively the brain's maturation, fill the information gap in temporal brain atlases, and demonstrate how the brain's performance matures during the lifespan. This review presents the current state of knowledge on heterochronous and heterogeneous development of S-F links during the maturation period. The S-F relationship has been investigated in early-matured unimodal and prolonged-matured transmodal regions of the brain using a variety of structural and functional biomarkers and data acquisition modalities. Joint S-F unimodal studies have employed auditory and visual stimuli, while the main focus of joint S-F transmodal studies has been resting-state and cognitive experiments. However, nonsignificant associations between some structural and functional biomarkers and their maturation show that designing and developing effective S-F biomarkers is still a challenge in the field. Maturational characteristics of brain asymmetries have been poorly investigated by the joint S-F studies, and the results were partially inconsistent with previous nonjoint ones. The inherent complexity of the brain performance can be modeled using multifactorial and nonlinear techniques as promising methods to simulate the impact of age on S-F relations considering their analysis challenges.
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Affiliation(s)
- Roxana Namiranian
- Department of Biomedical Engineering, Faculty of Electrical Engineering, K. N. Toosi University of Technology, Tehran 16317-14191, Iran
| | - Sahar Rahimi Malakshan
- Department of Biomedical Engineering, Faculty of Electrical Engineering, K. N. Toosi University of Technology, Tehran 16317-14191, Iran
| | - Hamid Abrishami Moghaddam
- Department of Biomedical Engineering, Faculty of Electrical Engineering, K. N. Toosi University of Technology, Tehran 16317-14191, Iran.,Inserm UMR 1105, Université de Picardie Jules Verne, 80054 Amiens, France
| | - Ali Khadem
- Department of Biomedical Engineering, Faculty of Electrical Engineering, K. N. Toosi University of Technology, Tehran 16317-14191, Iran
| | - Reza Jafari
- Department of Electrical and Computer Engineering, Thompson Engineering Building, University of Western Ontario, London, ON N6A 5B9, Canada
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Frota SMMC, Leite Filho CA, Bruno CS, Carvalho LB, Riegel NA, de Souza SADSR, Branco-Barreiro FCA. Masking Level Difference: test-retest reliability assessment in normal hearing female university students. Codas 2022; 34:e20200207. [PMID: 35019083 PMCID: PMC9851185 DOI: 10.1590/2317-1782/20212020207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 08/25/2021] [Indexed: 02/03/2023] Open
Abstract
PURPOSE To verify the test-retest reliability of the Masking Level Difference in normal hearing female university students. METHODS Prospective descriptive study with 78 young female adults without hearing complaints, submitted to the compact disc version of the Masking Level Difference by Auditec of Saint Louis. The threshold was determined by the difference between signal-to-noise ratios at hearing thresholds found in the antiphasic and homophasic conditions. The test was applied by the same examiner in two moments (test and retest) with an interval of seven to 14 days between them. Inferential statistical analysis included comparison of test and retest situations using Student's t test for paired samples, calculation of the intraclass correlation coefficient and calculation of 95% confidence intervals for signal-to-noise ratios at hearing thresholds found in the antiphasic and homophasic conditions and for masking level difference. RESULTS The average signal-to-noise ratio at hearing threshold in the homophasic condition was -12.59 dB and -12.46 dB in the Test and Retest situations, respectively, and -21.54 dB and -21.08 dB in the antiphasic condition. The average value in the final Masking Level Difference result was 8.95 dB in the Test and 8.74 dB in the Retest. Intraclass correlation coefficient values obtained were 0.436, 0.625 and 0.577 for homophasic, antiphasic and Masking Level Difference conditions, respectively. CONCLUSION The Masking Level Difference showed moderate test-retest reliability in normal hearing adults female university students.
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Affiliation(s)
- Silvana Maria Monte Coelho Frota
- Departamento de Fonoaudiologia, Faculdade de Medicina, Universidade Federal do Rio de Janeiro – UFRJ - Rio de Janeiro (RJ), Brasil.
| | - Carlos Alberto Leite Filho
- Programa de Pós-graduação em Ciências da Reabilitação, Departamento de Fisioterapia, Fonoaudiologia e Terapia Ocupacional, Faculdade de Medicina, Universidade de São Paulo – USP - São Paulo (SP), Brasil.
| | - Carolina Salomone Bruno
- Departamento de Fonoaudiologia, Faculdade de Medicina, Universidade Federal do Rio de Janeiro – UFRJ - Rio de Janeiro (RJ), Brasil.
| | - Lanna Borges Carvalho
- Departamento de Fonoaudiologia, Faculdade de Medicina, Universidade Federal do Rio de Janeiro – UFRJ - Rio de Janeiro (RJ), Brasil.
| | - Natalia Almeida Riegel
- Departamento de Fonoaudiologia, Faculdade de Medicina, Universidade Federal do Rio de Janeiro – UFRJ - Rio de Janeiro (RJ), Brasil.
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33
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Ryn Junior FV, Lüders D, Casali RL, Amaral MIRD. Temporal auditory processing in people exposed to musical instrument practice. Codas 2022. [DOI: 10.1590/2317-1782/20212021256en] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
ABSTRACT Purpose To investigate the influence of musical instrument practice on temporal auditory abilities and on the results of cortical potentials related to auditory events (P300) in a group of young musicians compared to individuals without experience in musical practice. Methods This is a prospective cross-sectional observational study. In total, 34 individuals between 18 and 30 years old, of both sexes, took part and were divided in two groups: Group I (GI), composed of musicians (n=16), and Group II (GII), composed of non-musicians (n=18). All participants underwent behavioral evaluation of temporal auditory processing, composed of Duration Pattern Sequence Test (DPS), Pitch Pattern Sequence Test (PPS), Random Gap Detection Test (RGDT) and electrophysiological evaluation – Long Latency Auditory Evoked Potential – P300. GI also answered a specific questionnaire to characterize musical practice. Results We observed statistically significant differences with superior performance of GI compared with GII in all behavioral tests (p<0.001*). The groups’ performance was similar regarding the latency and amplitude parameters analyzed from LLAEP-300 data (p>0.05). Conclusion The findings show a positive influence of musical practice toward the improvement of auditory abilities of temporal ordering and resolution. All participants presented adequate cortical functioning of the central auditory nervous system, without significant differences between musicians and non-musicians when considering P300 amplitude and latency.
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34
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Situational Awareness: The Effect of Stimulus Type and Hearing Protection on Sound Localization. SENSORS 2021; 21:s21217044. [PMID: 34770351 PMCID: PMC8587889 DOI: 10.3390/s21217044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/11/2021] [Accepted: 10/20/2021] [Indexed: 11/16/2022]
Abstract
The purpose of the current study was to test sound localization of a spoken word, rarely studied in the context of localization, compared to pink noise and a gunshot, while taking into account the source position and the effect of different hearing protection devices (HPDs) used by the listener. Ninety participants were divided into three groups using different HPDs. Participants were tested twice, under with- and no-HPD conditions, and were requested to localize the different stimuli that were delivered from one of eight speakers evenly distributed around them (starting from 22.5°). Localization of the word stimulus was more difficult than that of the other stimuli. HPD usage resulted in a larger mean root-mean-square error (RMSE) and increased mirror image reversal errors for all stimuli. In addition, HPD usage increased the mean RMSE and mirror image reversal errors for stimuli delivered from the front and back, more than for stimuli delivered from the left and right. HPDs affect localization, both due to attenuation and to limitation of pinnae cues when using earmuffs. Difficulty localizing the spoken word should be considered when assessing auditory functionality and should be further investigated to include HPDs with different attenuation spectra and levels, and to further types of speech stimuli.
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35
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Flanagan SA, Moore BCJ, Wilson AM, Gabrielczyk FC, MacFarlane A, Mandke K, Goswami U. Development of binaural temporal fine structure sensitivity in children. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2021; 150:2967. [PMID: 34717481 DOI: 10.1121/10.0006665] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
The highest frequency for which the temporal fine structure (TFS) of a sinewave can be compared across ears varies between listeners with an upper limit of about 1400 Hz for young normal-hearing adults (YNHA). In this study, binaural TFS sensitivity was investigated for 63 typically developing children, aged 5 years, 6 months to 9 years, 4 months using the temporal fine structure-adaptive frequency (TFS-AF) test of Füllgrabe, Harland, Sęk, and Moore [Int. J. Audiol. 56, 926-935 (2017)]. The test assesses the highest frequency at which an interaural phase difference (IPD) of ϕ° can be distinguished from an IPD of 0°. The values of ϕ were 30° and 180°. The starting frequency was 200 Hz. The thresholds for the children were significantly lower (worse) than the thresholds reported by Füllgrabe, Harland, Sęk, and Moore [Int. J. Audiol. 56, 926-935 (2017)] for YNHA. For both values of ϕ, the median age at which children performed above chance level was significantly higher (p < 0.001) than for those who performed at chance. For the subgroup of 40 children who performed above chance for ϕ = 180°, the linear regression analyses showed that the thresholds for ϕ = 180° increased (improved) significantly with increasing age (p < 0.001) with adult-like thresholds predicted to be reached at 10 years, 2 months of age. The implications for spatial release from masking are discussed.
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Affiliation(s)
- Sheila A Flanagan
- Department of Psychology, Centre for Neuroscience in Education, University of Cambridge, Downing Street, Cambridge CB2 3EB, United Kingdom
| | - Brian C J Moore
- Department of Psychology, Centre for Neuroscience in Education, University of Cambridge, Downing Street, Cambridge CB2 3EB, United Kingdom
| | - Angela M Wilson
- Department of Psychology, Centre for Neuroscience in Education, University of Cambridge, Downing Street, Cambridge CB2 3EB, United Kingdom
| | - Fiona C Gabrielczyk
- Department of Psychology, Centre for Neuroscience in Education, University of Cambridge, Downing Street, Cambridge CB2 3EB, United Kingdom
| | - Annabel MacFarlane
- Department of Psychology, Centre for Neuroscience in Education, University of Cambridge, Downing Street, Cambridge CB2 3EB, United Kingdom
| | - Kanad Mandke
- Department of Psychology, Centre for Neuroscience in Education, University of Cambridge, Downing Street, Cambridge CB2 3EB, United Kingdom
| | - Usha Goswami
- Department of Psychology, Centre for Neuroscience in Education, University of Cambridge, Downing Street, Cambridge CB2 3EB, United Kingdom
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Wu PH, Lee CY, Huang JY, Yang SF, Shih CP. The correlation between neonatal parameters and late-onset inner ear disorders in congenital cytomegalovirus infection: a 10-year population-based cohort study. Clin Otolaryngol 2021; 47:107-114. [PMID: 34547825 DOI: 10.1111/coa.13864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/08/2021] [Accepted: 09/12/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To evaluate the correlation of neonatal parameters with late-onset sensorineural hearing loss (SNHL) and vestibular dysfunction in individuals with congenital cytomegalovirus (cCMV) infection using the National Health Insurance Research Database (NHIRD) in Taiwan. DESIGN Retrospective cohort study. SETTING The whole Taiwanese population. PARTICIPANTS Patients with related diagnostic codes and examinations in their records were regarded as having cCMV infection. Each subject in that group was matched to 10 control individuals with noncongenital CMV infection on the basis of several neonatal parameters, including low gestational age, low birth weight, low Apgar score, maternal history of CMV infection and prolonged cCMV infection. A total of 5893 and 58 930 participants were enrolled in the study and control groups, respectively. MAIN OUTCOME MEASURES The main outcomes were the development of SNHL and the development of vestibular dysfunction within one year after birth as reflected by diagnostic codes and specific examinations. Cox proportional hazard regression was used to calculate the adjusted hazard ratio (HR) and 95% confidence interval (CI) of each primary outcome between the two groups. RESULTS Overall, 109 and 397 episodes of SNHL developed in the study group and the control group, respectively, and the study group demonstrated a significantly higher incidence of SNHL (adjusted HR: 2.56; 95% CI: 2.07-3.18). In addition, similar incidence rates of vestibular dysfunction were found in the study group and the control group, with 7 and 90 events, respectively (adjusted HR: 0.77; 95% CI: 0.36-1.67). In subgroup analyses, a higher incidence of SNHL was correlated with lower gestational age (GA) (adjusted HR: 2.09; 95% CI: 1.29-3.39), lower birth weight (BW) (adjusted HR: 2.05; 95% CI: 1.28-3.30) and prolonged cCMV infection (adjusted HR: 3.92; 95% CI: 1.95-7.88). CONCLUSIONS Low GA, low BW and a long disease course are significantly correlated with late-onset SNHL in cCMV infection.
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Affiliation(s)
- Pei-Hsuan Wu
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Chia-Yi Lee
- Department of Ophthalmology, Show Chwan Memorial Hospital, Changhua, Taiwan
| | - Jing-Yang Huang
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Shun-Fa Yang
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan.,Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Cheng-Ping Shih
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
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Roberts JB, Christopher Stecker G, Holder JT, Gifford RH. Combined Electric and Acoustic Stimulation (EAS) in Children: Investigating Benefit Afforded by Bilateral Versus Unilateral Acoustic Hearing. Otol Neurotol 2021; 42:e836-e843. [PMID: 33859136 PMCID: PMC8627183 DOI: 10.1097/mao.0000000000003139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE Electric and acoustic stimulation (EAS) with preserved hearing in the implanted ear provides benefit for speech understanding, spatial hearing, and quality of life in adults. However, there is limited research on EAS outcomes in children. The aims of this study were to estimate the magnitude of EAS-related benefit on speech understanding in children with preserved acoustic hearing and to determine what role acoustic interaural time difference (ITD) sensitivity may have on said EAS benefit. METHODS Six children with acoustic hearing preservation and 20 children with normal hearing (NH) were recruited to participate. Speech recognition was assessed via an eight-loudspeaker array with speech presented from one loudspeaker at 0 degree and restaurant noise from all other loudspeakers (45-315 degrees). ITD thresholds were measured for a 250-Hz signal presented acoustically via insert earphones. RESULTS Only one EAS listener demonstrated significant benefit from bilateral acoustic hearing as compared with acoustic hearing from a single ear. ITD thresholds were poor in the range of 302 to 1000+ ms and were considerably poorer than ITD thresholds for the NH group. CONCLUSION These data suggest that children with acoustic hearing preservation may not exhibit initial EAS benefit for speech recognition in semi-diffuse noise; however, because none exhibited a decrement in performance with bilateral acoustic stimulation, EAS fittings are recommended to provide binaural acoustic access allowing for EAS adaptation to binaural cues over time. Future research should address the emergence of EAS benefit, binaural cue sensitivity, and the role of EAS experience in children and adults.
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Zhang K, Fried J, Nguyen SA, Meyer TA, White DR. Dysfunction of the Auditory System in Children With Hypothyroidism: A Systematic Review and Meta-Analysis. Ear Hear 2021; 43:23-31. [PMID: 34282088 DOI: 10.1097/aud.0000000000001082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To examine the prevalence of hearing impairment in children with hypothyroidism, and to characterize clinical and subclinical hearing loss by examining cochlear function, auditory brainstem pathways, and integration of the auditory system as a whole. DESIGN An electronic search was conducted using PubMed, Scopus, and Cochrane Library databases. This systematic review was performed in accordance with the PRISMA guidelines. Original observational studies that utilized audiological tests for auditory system evaluations in hypothyroidism were included. A total of 2004 studies were found in the search, with 23 studies meeting the inclusion criteria. RESULTS The pooled prevalence of hearing loss was 16.1% [95% confidence interval 10.7, 22.4] for children with congenital hypothyroidism. Hearing thresholds at pure-tone averages (0.5-2 kHz) were 1.6 dB [95% confidence interval 1.7, 4.8] higher for children with hypothyroidism compared to age-matched controls. Cochlear dysfunction was detected at middle frequencies (1-3 kHz) by otoacoustic emission testing, indicating abnormalities of hair cell function or cochlear integration. Retrocochlear involvement was detected on auditory brainstem response (ABR), with prolonged Wave I indicating a peripheral conduction abnormality localized to the middle or inner ear and eighth cranial nerve. CONCLUSIONS Children with hypothyroidism have a higher prevalence of hearing loss than children without hypothyroidism. For children with congenital hypothyroidism, evidence of subclinical abnormalities at the level of the cochlea and eighth cranial nerve are present despite early initiation of levothyroxine therapy. Dysfunction of the auditory system might begin with predominance of peripheral conduction abnormalities early in development.
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Affiliation(s)
- Kathy Zhang
- Department of Otolaryngology - Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina, U.S.A
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Segal O, Kligler N, Kishon-Rabin L. Infants' Preference for Child-Directed Speech Over Time-Reversed Speech in On-Channel and Off-Channel Masking. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2021; 64:2897-2908. [PMID: 34157233 DOI: 10.1044/2021_jslhr-20-00279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Purpose This study aims to examine the development of auditory selective attention to speech in noise by examining the ability of infants to prefer child-directed speech (CDS) over time-reversed speech (TRS) presented in "on-channel" and "off-channel" noise. Method A total of 32 infants participated in the study. Sixteen typically developing infants were tested at 7 and 11 months of age using the central fixation procedure with CDS and TRS in two types of noise at +10 dB signal-to-noise ratio. One type of noise was an "on-channel" masker with a spectrum overlapping that of the CDS (energetic masking), and the second was an "off-channel" masker with frequencies that were outside the spectrum of the CDS (distractive masking). An additional group of sixteen 11-month-old infants were tested in quiet and served as controls for the "off-frequency" masker condition. Results Infants preferred CDS over TRS in both age groups, but this preference was more pronounced with "off-channel" masker regardless of age. Also, older infants demonstrated longer looking time for the target stimuli when presented with an "off-channel" masker compared to the "on-channel" masker. Looking time in quiet was similar to looking time in the "off-channel" condition, and looking time for CDS was longer in quiet compared to the "on-channel" condition. Conclusions These findings support the notion that (a) infants as young as 7 months of age are already showing preference for speech in noise, regardless of type of masker; (b) by 11 months of age, listening with the "off-channel" condition did not yield different results than in quiet. Thus, by 11 months of age, infants' cognitive-attentional abilities may be more developed.
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Affiliation(s)
- Osnat Segal
- Department of Communication Disorders, The Stanley Steyer School of Health Professions, Sackler Faculty of Medicine, Tel Aviv University, Israel
| | - Nitzan Kligler
- Department of Communication Disorders, The Stanley Steyer School of Health Professions, Sackler Faculty of Medicine, Tel Aviv University, Israel
| | - Liat Kishon-Rabin
- Department of Communication Disorders, The Stanley Steyer School of Health Professions, Sackler Faculty of Medicine, Tel Aviv University, Israel
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Recording Obligatory Cortical Auditory Evoked Potentials in Infants: Quantitative Information on Feasibility and Parent Acceptability. Ear Hear 2021; 41:630-639. [PMID: 31633599 PMCID: PMC7673631 DOI: 10.1097/aud.0000000000000789] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES With the advent of newborn hearing screening and early intervention, there is a growing interest in using supra-threshold obligatory cortical auditory evoked potentials (CAEPs) to complement established pediatric clinical test procedures. The aim of this study was to assess the feasibility, and parent acceptability, of recording infant CAEPs. DESIGN Typically developing infants (n = 104) who had passed newborn hearing screening and whose parents expressed no hearing concerns were recruited. Testing was not possible in 6 infants, leaving 98, age range 5 to 39 weeks (mean age = 21.9, SD = 9.4). Three short duration speech-like stimuli (/m/, /g/, /t/) were presented at 65 dB SPL via a loudspeaker at 0° azimuth. Three criteria were used to assess clinical feasibility: (i) median test duration <30 min, (ii) >90% completion rate in a single test session, and (iii) >90% response detection for each stimulus. We also recorded response amplitude, latency, and CAEP signal to noise ratio. Response amplitudes and residual noise levels were compared for Fpz (n = 56) and Cz (n = 42) noninverting electrode locations. Parental acceptability was based on an 8-item questionnaire (7-point scale, 1 being best). In addition, we explored the patient experience in semistructured telephone interviews with seven families. RESULTS The median time taken to complete 2 runs for 3 stimuli, including preparation, was 27 min (range 17 to 59 min). Of the 104 infants, 98 (94%) were in an appropriate behavioral state for testing. A further 7 became restless during testing and their results were classified as "inconclusive." In the remaining 91 infants, CAEPs were detected in every case with normal bilateral tympanograms. Detection of CAEPs in response to /m/, /g/, and /t/ in these individuals was 86%, 100%, and 92%, respectively. Residual noise levels and CAEP amplitudes were higher for Cz electrode recordings. Mean scores on the acceptability questionnaire ranged from 1.1 to 2.6. Analysis of interviews indicated that parents found CAEP testing to be a positive experience and recognized the benefit of having an assessment procedure that uses conversational level speech stimuli. CONCLUSIONS Test duration, completion rates, and response detection rates met (or were close to) our feasibility targets, and parent acceptability was high. CAEPs have the potential to supplement existing practice in 3- to 9-month olds.
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Vernier LS, Schneider KL, Zanini C, Paniz T, Levandowski DC. Delivery Route and the Outcome of Newborn Hearing Screening of Full-Term Neonates Born in a Public Maternal-Infant Hospital in the South of Brazil. Int Arch Otorhinolaryngol 2021; 25:e365-e373. [PMID: 34377169 PMCID: PMC8321637 DOI: 10.1055/s-0040-1714146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 06/02/2020] [Indexed: 10/24/2022] Open
Abstract
Introduction The newborn hearing screening (NHS) is the most effective strategy for detecting newborns and infants suspected to have hearing loss. Objective To verify possible associations between the route of delivery and the results of the NHS conducted at 3 independent times (24, 36, and 36 hours with a facilitator auricular maneuver [FAM]) in the lives of full-term newborns. Methods A descriptive, observational, prospective study performed with a sample of 462 newborns, with a gestational age ≥ 37 weeks, without risk indicators of hearing loss. The NHS was conducted as a routine element of the facilities, two times: at 24 and 36 hours of life. In the presence of a "failure" in the last test, a new one was immediately performed, following the FAM. Statistic analyses were carried out on the program SPSS version 21.0 (IBM Inc., Armonk, NY, USA). Results Of the 462 newborns assessed, 304 (65.80%) were born by vaginal delivery. There was a statistical significance of "pass" in the NHS for the 24-hour evaluation ( p ≤ 0.001 for a vaginal delivery and p = 0.002 for a cesarean delivery), with the prevalence of the "pass" index being higher when the baby's lifespan was greater. A statistically significant difference was not observed when the NHS results were compared by taking into account the babies' routes of delivery and the different times of life. Conclusion These findings show that full-term babies who were born by cesarean did not show more "failure" in the NHS results, contradicting the hypothesis of the study. Furthermore, to reduce the false-negative rates, regardless of the route of delivery, this assessment should be conducted after the first 24 hours of the newborns' life.
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Affiliation(s)
- Luíza Silva Vernier
- Graduate Program in Health Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
| | - Karoline Lemos Schneider
- Graduate Program in Health Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
| | - Claudia Zanini
- Hospital Materno Infantil Presidente Vargas, Porto Alegre, RS, Brazil
| | - Tatiana Paniz
- Hospital Materno Infantil Presidente Vargas, Porto Alegre, RS, Brazil
| | - Daniela Centenaro Levandowski
- Graduate Program in Health Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
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Coudert A, Gaveau V, Gatel J, Verdelet G, Salemme R, Farne A, Pavani F, Truy E. Spatial Hearing Difficulties in Reaching Space in Bilateral Cochlear Implant Children Improve With Head Movements. Ear Hear 2021; 43:192-205. [PMID: 34225320 PMCID: PMC8694251 DOI: 10.1097/aud.0000000000001090] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Supplemental Digital Content is available in the text. The aim of this study was to assess three-dimensional (3D) spatial hearing abilities in reaching space of children and adolescents fitted with bilateral cochlear implants (BCI). The study also investigated the impact of spontaneous head movements on sound localization abilities.
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Affiliation(s)
- Aurélie Coudert
- Integrative Multisensory Perception Action & Cognition Team-ImpAct, Lyon Neuroscience Research Center, Lyon, France Department of Pediatric Otolaryngology-Head & Neck Surgery, Femme Mere Enfant Hospital, Hospices Civils de Lyon, Lyon, France Department of Otolaryngology-Head & Neck Surgery, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France University of Lyon 1, Lyon, France Hospices Civils de Lyon, Neuro-immersion Platform, Lyon, France Center for Mind/Brain Sciences (CIMeC), University of Trento, Rovereto, Italy Department of Psychology and Cognitive Sciences, University of Trento, Rovereto, Italy
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Bhat M, Palaniswamy HP, Varsha U, Krishna Y. Development and validation of an automated dichotic double word test in Indian English using MATLAB. Int J Pediatr Otorhinolaryngol 2021; 144:110697. [PMID: 33799101 DOI: 10.1016/j.ijporl.2021.110697] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 03/06/2021] [Accepted: 03/24/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Dichotic listening is an experimental paradigm where two different stimuli are presented to the right and left ear simultaneously. Currently, there are no clinically validated full version (Forced recall condition) of dichotic word test in Indian language with established normative. Hence the study involves the development of a MATLAB based Dichotic listening test in Indian English including free recall and forced recall conditions. METHOD This study was carried out in two phases. Phase 1 involved development and validation of an automated dichotic listening test using MATLAB software. Phase 2 involved data collection and constructing a normative data on 70 healthy adults (18-50 yrs) and 70 children (10-15 yrs) also establishing test retest reliability on 25 participants for the newly developed test. RESULTS Right ear advantage was observed for free recall condition similar to that of classical dichotic effect. Also, there was no significant difference between the right and left ear scores in the two forced recall condition. The test showed moderate to good test-retest reliability for both the conditions. CONCLUSION The results showed ideal retention of original dichotic effects for both free recall and forced recall conditions and hence can be used in clinical set to tests disordered population like Central auditory population disorder and Learning disability.
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Affiliation(s)
- Mayur Bhat
- Dept of Speech and Hearing Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
| | - Hari Prakash Palaniswamy
- Dept of Speech and Hearing Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India.
| | - U Varsha
- II MASLP, Dept of Speech and Hearing Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
| | - Y Krishna
- Dept of Speech and Hearing Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
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Spatial Hearing as a Function of Presentation Level in Moderate-to-Severe Unilateral Conductive Hearing Loss. Otol Neurotol 2021; 41:167-172. [PMID: 31834211 DOI: 10.1097/mao.0000000000002475] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
HYPOTHESIS Patients with moderate-to-severe unilateral conductive hearing loss (UCHL) can make use of binaural difference cues when stimuli are presented at a high enough intensity to provide audibility in the affected ear. BACKGROUND Spatial hearing is essential for listening in complex environments and sound source localization. Patients with UCHL have decreased access to binaural difference cues, resulting in poorer spatial hearing abilities compared with listeners with normal hearing. METHODS Twelve patients with moderate-to-severe UCHL, most due to atresia (83.3%), and 12 age-matched controls with normal hearing bilaterally participated in this study. Outcome measures included: 1) spatial release from masking, and 2) sound source localization. Speech reception thresholds were measured with target speech (Pediatric AzBio sentences) presented at 0 degree and a two-talker masker that was either colocated with the target (0 degree) or spatially separated from the target (symmetrical, ±90 degrees). Spatial release from masking was quantified as the difference between speech reception thresholds in these two conditions. Localization ability in the horizontal plane was assessed in a 180 degree arc of 11 evenly-spaced loudspeakers. These two tasks were completed at 50 and 75 dB SPL. RESULTS Both children and adults with UCHL performed more poorly than controls when recognizing speech in a spatially separated masker or localizing sound; however, this group difference was larger at 50 than 75 dB SPL. CONCLUSION Patients with UCHL experience improved spatial hearing with the higher presentation level, suggesting that the auditory deprivation associated with a moderate-to-severe UCHL does not preclude exposure to-or use of-binaural difference cues.
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de Joya EM, Colbert BM, Tang PC, Lam BL, Yang J, Blanton SH, Dykxhoorn DM, Liu X. Usher Syndrome in the Inner Ear: Etiologies and Advances in Gene Therapy. Int J Mol Sci 2021; 22:3910. [PMID: 33920085 PMCID: PMC8068832 DOI: 10.3390/ijms22083910] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/02/2021] [Accepted: 04/05/2021] [Indexed: 02/06/2023] Open
Abstract
Hearing loss is the most common sensory disorder with ~466 million people worldwide affected, representing about 5% of the population. A substantial portion of hearing loss is genetic. Hearing loss can either be non-syndromic, if hearing loss is the only clinical manifestation, or syndromic, if the hearing loss is accompanied by a collage of other clinical manifestations. Usher syndrome is a syndromic form of genetic hearing loss that is accompanied by impaired vision associated with retinitis pigmentosa and, in many cases, vestibular dysfunction. It is the most common cause of deaf-blindness. Currently cochlear implantation or hearing aids are the only treatments for Usher-related hearing loss. However, gene therapy has shown promise in treating Usher-related retinitis pigmentosa. Here we review how the etiologies of Usher-related hearing loss make it a good candidate for gene therapy and discuss how various forms of gene therapy could be applied to Usher-related hearing loss.
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Affiliation(s)
- Evan M. de Joya
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (E.M.J.); (B.M.C.); (P.-C.T.); (S.H.B.)
- Dr. John T. Macdonald Foundation Department of Human Genetics, John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL 33136, USA;
| | - Brett M. Colbert
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (E.M.J.); (B.M.C.); (P.-C.T.); (S.H.B.)
- Dr. John T. Macdonald Foundation Department of Human Genetics, John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL 33136, USA;
- Medical Scientist Training Program, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Pei-Ciao Tang
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (E.M.J.); (B.M.C.); (P.-C.T.); (S.H.B.)
| | - Byron L. Lam
- Bascom Palmer Eye Institute, University of Miami School of Medicine, Miami, FL 33136, USA;
| | - Jun Yang
- John A. Moran Eye Center, Department of Ophthalmology and Visual Sciences, University of Utah, Salt Lake City, UT 84132, USA;
| | - Susan H. Blanton
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (E.M.J.); (B.M.C.); (P.-C.T.); (S.H.B.)
- Dr. John T. Macdonald Foundation Department of Human Genetics, John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL 33136, USA;
| | - Derek M. Dykxhoorn
- Dr. John T. Macdonald Foundation Department of Human Genetics, John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL 33136, USA;
| | - Xuezhong Liu
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (E.M.J.); (B.M.C.); (P.-C.T.); (S.H.B.)
- Dr. John T. Macdonald Foundation Department of Human Genetics, John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL 33136, USA;
- Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
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Zhai F, Fang X, Li Y, Chen H, Chen J. Risk Factors for Failure in First-Time Hearing Screening Tests among High-Risk Neonates in Neonatal Intensive Care Unit. Audiol Neurootol 2021; 26:338-345. [PMID: 33831861 DOI: 10.1159/000512761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 11/02/2020] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE The aim of the study was to investigate into the risk factors for failure in the first-time screening test among high-risk neonates in neonatal intensive care unit (NICU) in order to further clarify the etiology of neonatal hearing impairment, thus providing insights into early prevention and intervention. METHODS We performed automated auditory brainstem response (AABR), distortion product otoacoustic emission (DPOAE), and acoustic immittance (AI) on 2,194 high-risk neonates admitted into the NICU of Shanghai Children's Medical Center from January 2015 to December 2019, and the risk factors, including premature birth, hyperbilirubinemia, and infant respiratory distress syndrome, were analyzed retrospectively by the univariate χ2 test and multivariate stepwise logistic regression analysis. RESULTS The pass rates of AABR, DPOAE, and AI were 70.21, 78.44, and 93.12%, respectively, in 2,194 cases of high-risk neonates screened, which are significantly lower than those of healthy controls. The most common diagnoses included artificial feeding, preterm birth, C-section, low birth weight (LBW), neonatal hyperbilirubinemia (NHB), neonatal respiratory distress syndrome (NRDS), congenital heart disease (CHD), gestational diabetes mellitus, pregnancy-induced hypertension syndrome, advanced maternal age (AMA), twins, and in vitro fertilization. Stepwise logistic regression analysis indicated that the AABR pass rate was negatively correlated with LBW (p = 0.002), NHB (p < 0.001), NRDS (p = 0.007), artificial or mixed feeding (p = 0.018), and CHD (p = 0.005). The pass rate of DPOAE was negatively correlated with artificial or mixed feeding (p = 0.041), NHB (p < 0.001), LBW (p = 0.007), very LBW (VLBW) (p = 0.008), and C-section (p < 0.001). The pass rate of AI was negatively correlated with revised AMA (≥40 year) (p < 0.001), NHB (p = 0.043), C-section (p = 0.005), and artificial/mixed feeding (p = 0.036). CONCLUSION The hearing screening pass rates of high-risk neonates in the NICU were lower than those of normal neonates, among which the rate of AABR was significantly lower than that of DPOAE. NRDS, NHB, LBW, revised AMA, CHD, C-section, and artificial feeding are potential risk factors of hearing impairment. The combination of different hearing screening tests is necessary for accurate diagnosis of congenital hearing disorders.
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Affiliation(s)
- Feng Zhai
- Department of Otolaryngology, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xuhua Fang
- Department of Otolaryngology, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yanbo Li
- Department of Geography, University of British Columbia, Vancouver, British Columbia, Canada
| | - Haoliang Chen
- Department of Child Health Care, Sanya City Womenfolk & Infant Health Care Hospital Affiliated to Shanghai Children's Medical Center, Sanya, China
| | - Jie Chen
- Department of Otolaryngology, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Plyler E, Harkrider AW, Little JP. Three Cases of Recovery from Sensorineural Hearing Loss in the First Year of Life: Implications for Monitoring and Management. J Am Acad Audiol 2021; 32:54-68. [PMID: 33588509 DOI: 10.1055/s-0040-1719129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Three infants with different risk factors, behavioral and physiologic audiometric histories, and diagnoses were fit with amplification between 3 and 8 months of age. Two of the three met criteria for cochlear implantation. PURPOSE This article aims to heighten awareness of the rare possibility of recovery from sensorineural hearing loss in infants with varying histories and emphasize the importance of a full diagnostic test battery in all infants diagnosed with sensorineural hearing loss every 3 months until objective and subjective thresholds are stable to ensure appropriate intervention. RESEARCH DESIGN Case reports. RESULTS All three infants demonstrated improvement or full recovery of hearing and cochlear function by approximately 12 months old. Their change in hearing was discovered due to frequent follow-up and/or caregiver report. One of these infants was tentatively scheduled to have cochlear implant surgery 2 months later. CONCLUSION Appropriate early intervention for infants with hearing loss is critical to ensure maximum accessibility to speech and language cues. The Federal Drug Administration approves cochlear implantation in infants as young as 12 months. When providing audiometric management of infants with sensorineural hearing loss, it is imperative to conduct a full diagnostic test battery every 3 months (including tympanometric, acoustic reflex, and otoacoustic emission measurement) until objective and subjective thresholds are stable. There was no apparent pattern of factors to predict that the infants highlighted in these cases would recover. Discussion among pediatric audiologists and otologists and comparison of data from clinics across the U.S. is needed to identify predictive patterns and determine appropriate, consistent monitoring of infants with sensorineural hearing loss.
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Affiliation(s)
- Erin Plyler
- Department of Audiology and Speech Pathology, University of Tennessee Health Science Center, Knoxville, Tennessee
| | - Ashley W Harkrider
- Department of Audiology and Speech Pathology, University of Tennessee Health Science Center, Knoxville, Tennessee
| | - John P Little
- Children's Ear, Nose and Throat Specialists, Children's Hospital, Knoxville, Tennessee
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Monteiro TR, Rocha-Muniz CN, Filippini R, Morais AA, Schochat E. The influence of oral language environment on auditory development. Int J Pediatr Otorhinolaryngol 2020; 139:110426. [PMID: 33161367 DOI: 10.1016/j.ijporl.2020.110426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 09/25/2020] [Accepted: 10/02/2020] [Indexed: 11/18/2022]
Abstract
OBJECTIVE The purpose of this study was to compare the auditory processing of hearing children who were immersed in an oral language environment during early childhood with that of children who were poorly exposed to oral language during the same period. METHODS Sixty children aged between 5 and 10 years participated in this study. They were divided in two groups. Group 1 comprised of 30 children who had deaf signer parents, and Group 2 comprised of 30 children who had hearing parents. These children underwent the following auditory processing tests: Pediatric Speech Intelligibility, Dichotic Digits, Pitch Pattern Sequence, Gaps-in-Noise, and Memory Tests for Instrumental and Verbal sounds. RESULTS Group 1 had significantly poorer performance than that of Group 2 in all tests. In addition, an analysis by age range revealed that the differences between groups were more pronounced in younger children (5-6 years). CONCLUSION The results indicate that the development of auditory skills is strongly influenced by access to oral linguistic sounds. Thus, a child's exposure to an oral language environment from birth is important to the adequate development of the auditory system functions.
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Affiliation(s)
| | | | - Renata Filippini
- Faculdade de Medicina, Universidade de São Paulo (USP), São Paulo, SP, Brazil.
| | | | - Eliane Schochat
- Faculdade de Medicina, Universidade de São Paulo (USP), São Paulo, SP, Brazil.
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Misurelli SM, Goupell MJ, Burg EA, Jocewicz R, Kan A, Litovsky RY. Auditory Attention and Spatial Unmasking in Children With Cochlear Implants. Trends Hear 2020; 24:2331216520946983. [PMID: 32812515 PMCID: PMC7446264 DOI: 10.1177/2331216520946983] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
The ability to attend to target speech in background noise is an important skill, particularly for children who spend many hours in noisy environments. Intelligibility improves as a result of spatial or binaural unmasking in the free-field for normal-hearing children; however, children who use bilateral cochlear implants (BiCIs) demonstrate little benefit in similar situations. It was hypothesized that poor auditory attention abilities might explain the lack of unmasking observed in children with BiCIs. Target and interferer speech stimuli were presented to either or both ears of BiCI participants via their clinical processors. Speech reception thresholds remained low when the target and interferer were in opposite ears, but they did not show binaural unmasking when the interferer was presented to both ears and the target only to one ear. These results demonstrate that, in the most extreme cases of stimulus separation, children with BiCIs can ignore an interferer and attend to target speech, but there is weak or absent binaural unmasking. It appears that children with BiCIs mostly experience poor encoding of binaural cues rather than deficits in ability to selectively attend to target speech.
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Affiliation(s)
- Sara M Misurelli
- Waisman Center, University of Wisconsin-Madison.,Department of Surgery, Division of Otolaryngology, University of Wisconsin School of Medicine and Public Health
| | | | | | | | - Alan Kan
- Waisman Center, University of Wisconsin-Madison.,School of Engineering, Macquarie University, Sydney, Australia
| | - Ruth Y Litovsky
- Waisman Center, University of Wisconsin-Madison.,Department of Surgery, Division of Otolaryngology, University of Wisconsin School of Medicine and Public Health
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Thakkar T, Anderson SR, Kan A, Litovsky RY. Evaluating the Impact of Age, Acoustic Exposure, and Electrical Stimulation on Binaural Sensitivity in Adult Bilateral Cochlear Implant Patients. Brain Sci 2020; 10:E406. [PMID: 32604860 PMCID: PMC7348899 DOI: 10.3390/brainsci10060406] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 06/15/2020] [Accepted: 06/19/2020] [Indexed: 01/10/2023] Open
Abstract
Deafness in both ears is highly disruptive to communication in everyday listening situations. Many individuals with profound deafness receive bilateral cochlear implants (CIs) to gain access to spatial cues used in localization and speech understanding in noise. However, the benefit of bilateral CIs, in particular sensitivity to interaural time and level differences (ITD and ILDs), varies among patients. We measured binaural sensitivity in 46 adult bilateral CI patients to explore the relationship between binaural sensitivity and three classes of patient-related factors: age, acoustic exposure, and electric hearing experience. Results show that ILD sensitivity increased with shorter years of acoustic exposure, younger age at testing, or an interaction between these factors, moderated by the duration of bilateral hearing impairment. ITD sensitivity was impacted by a moderating effect between years of bilateral hearing impairment and CI experience. When age at onset of deafness was treated as two categories (<18 vs. >18 years of age), there was no clear effect for ILD sensitivity, but some differences were observed for ITD sensitivity. Our findings imply that maximal binaural sensitivity is obtained by listeners with a shorter bilateral hearing impairment, a longer duration of CI experience, and potentially a younger age at testing. 198/200.
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Affiliation(s)
- Tanvi Thakkar
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; (T.T.); (S.R.A.)
| | - Sean R. Anderson
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; (T.T.); (S.R.A.)
| | - Alan Kan
- School of Engineering, Macquarie University, Sydney, NSW 2109, Australia;
| | - Ruth Y. Litovsky
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; (T.T.); (S.R.A.)
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