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Neri F, Cappello C, Viberti F, Donniacuo A, Burzi L, Cinti A, Benelli A, Luca Smeralda C, Romanella S, Santarnecchi E, Mandalà M, Rossi S. rTMS of the auditory association cortex improves speech intelligibility in patients with sensorineural hearing loss. Clin Neurophysiol 2024; 160:38-46. [PMID: 38395005 DOI: 10.1016/j.clinph.2024.02.007] [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: 11/17/2022] [Revised: 12/30/2023] [Accepted: 02/03/2024] [Indexed: 02/25/2024]
Abstract
OBJECTIVE Sensorineural hearing-loss (SHL) is accompanied by changes in the entire ear-brain pathway and its connected regions. While hearing-aid (HA) partially compensates for SHL, speech perception abilities often continue to remain poor, resulting in consequences in everyday activities. Repetitive transcranial magnetic stimulation (rTMS) promotes cortical network plasticity and may enhance language comprehension in SHL patients. METHODS 27 patients using HA and with SHL were randomly assigned to a treatment protocol consisting of five consecutive days of either real (Active group: 13 patients) or placebo rTMS (Sham group: 14 patients). The stimulation parameters were as follows: 2-second trains at 10 Hz, 4-second inter-train-interval, and 1800 pulses. Neuronavigated rTMS was applied over the left superior temporal sulcus. Audiological tests were administered before (T0), immediately after (T1), and one week following treatment completion (T2) to evaluate the speech reception threshold (SRT) and the Pure Tone Average (PTA). RESULTS In the context of a general improvement likely due to learning, the treatment with real rTMS induced significant reduction of the SRT and PTA at T1 and T2 versus placebo. CONCLUSIONS The long-lasting effects on SRT and PTA observed in the Active group indicates that rTMS administered over the auditory cortex could promote sustained neuromodulatory-induced changes in the brain, improving the perception of complex sentences and pure tones reception skills. SIGNIFICANCE Five days of rTMS treatment enhances overall speech intelligibility and PTA in SHL patients.
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Affiliation(s)
- Francesco Neri
- Siena Brain Investigation and Neuromodulation Lab (Si-BIN Lab), Department of Medicine, Surgery and Neuroscience, Neurology and Clinical Neurophysiology Section, University of Siena, Italy; Oto-Neuro-Tech Conjoined Lab, Policlinico Le Scotte, University of Siena, Italy.
| | | | | | | | - Lucia Burzi
- Siena Brain Investigation and Neuromodulation Lab (Si-BIN Lab), Department of Medicine, Surgery and Neuroscience, Neurology and Clinical Neurophysiology Section, University of Siena, Italy
| | - Alessandra Cinti
- Siena Brain Investigation and Neuromodulation Lab (Si-BIN Lab), Department of Medicine, Surgery and Neuroscience, Neurology and Clinical Neurophysiology Section, University of Siena, Italy
| | - Alberto Benelli
- Siena Brain Investigation and Neuromodulation Lab (Si-BIN Lab), Department of Medicine, Surgery and Neuroscience, Neurology and Clinical Neurophysiology Section, University of Siena, Italy
| | - Carmelo Luca Smeralda
- Siena Brain Investigation and Neuromodulation Lab (Si-BIN Lab), Department of Medicine, Surgery and Neuroscience, Neurology and Clinical Neurophysiology Section, University of Siena, Italy
| | - Sara Romanella
- Siena Brain Investigation and Neuromodulation Lab (Si-BIN Lab), Department of Medicine, Surgery and Neuroscience, Neurology and Clinical Neurophysiology Section, University of Siena, Italy
| | - Emiliano Santarnecchi
- Precision Neuroscience & Neuromodulation Program, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Marco Mandalà
- Oto-Neuro-Tech Conjoined Lab, Policlinico Le Scotte, University of Siena, Italy; Otolaryngology Department, University of Siena, Italy
| | - Simone Rossi
- Siena Brain Investigation and Neuromodulation Lab (Si-BIN Lab), Department of Medicine, Surgery and Neuroscience, Neurology and Clinical Neurophysiology Section, University of Siena, Italy; Oto-Neuro-Tech Conjoined Lab, Policlinico Le Scotte, University of Siena, Italy
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Arjmandi MK, Behroozmand R. On the interplay between speech perception and production: insights from research and theories. Front Neurosci 2024; 18:1347614. [PMID: 38332858 PMCID: PMC10850291 DOI: 10.3389/fnins.2024.1347614] [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: 12/01/2023] [Accepted: 01/08/2024] [Indexed: 02/10/2024] Open
Abstract
The study of spoken communication has long been entrenched in a debate surrounding the interdependence of speech production and perception. This mini review summarizes findings from prior studies to elucidate the reciprocal relationships between speech production and perception. We also discuss key theoretical perspectives relevant to speech perception-production loop, including hyper-articulation and hypo-articulation (H&H) theory, speech motor theory, direct realism theory, articulatory phonology, the Directions into Velocities of Articulators (DIVA) and Gradient Order DIVA (GODIVA) models, and predictive coding. Building on prior findings, we propose a revised auditory-motor integration model of speech and provide insights for future research in speech perception and production, focusing on the effects of impaired peripheral auditory systems.
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Affiliation(s)
- Meisam K. Arjmandi
- Translational Auditory Neuroscience Lab, Department of Communication Sciences and Disorders, Arnold School of Public Health, University of South Carolina, Columbia, SC, United States
| | - Roozbeh Behroozmand
- Speech Neuroscience Lab, Department of Speech, Language, and Hearing, Callier Center for Communication Disorders, School of Behavioral and Brain Sciences, The University of Texas at Dallas, Richardson, TX, United States
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An S, Jo E, Jun SB, Sung JE. Effects of cochlear implantation on cognitive decline in older adults: A systematic review and meta-analysis. Heliyon 2023; 9:e19703. [PMID: 37809368 PMCID: PMC10558942 DOI: 10.1016/j.heliyon.2023.e19703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 08/20/2023] [Accepted: 08/30/2023] [Indexed: 10/10/2023] Open
Abstract
Background Hearing loss has been reported as the most significant modifiable risk factor for dementia, but it is still unknown whether auditory rehabilitation can practically prevent cognitive decline. We aim to systematically analyze the longitudinal effects of auditory rehabilitation via cochlear implants (CIs). Methods In this systematic review and meta-analysis, we searched relevant literature published from January 1, 2000 to April 30, 2022, using electronic databases, and selected studies in which CIs were performed mainly on older adults and follow-up assessments were conducted in both domains: speech perception and cognitive function. A random-effects meta-analysis was conducted for each domain and for each timepoint comparison (pre-CI vs. six months post-CI; six months post-CI vs. 12 months post-CI; pre-CI vs. 12 months post-CI), and heterogeneity was assessed using Cochran's Q test. Findings Of the 1918 retrieved articles, 20 research papers (648 CI subjects) were included. The results demonstrated that speech perception was rapidly enhanced after CI, whereas cognitive function had different speeds of improvement for different subtypes: executive function steadily improved significantly up to 12 months post-CI (g = 0.281, p < 0.001; g = 0.115, p = 0.003; g = 0.260, p < 0.001 in the order of timepoint comparison); verbal memory was significantly enhanced at six months post-CI and was maintained until 12 months post-CI (g = 0.296, p = 0.002; g = 0.095, p = 0.427; g = 0.401, p < 0.001); non-verbal memory showed no considerable progress at six months post-CI, but significant improvement at 12 months post-CI (g = -0.053, p = 0.723; g = 0.112, p = 0.089; g = 0.214, p = 0.023). Interpretation The outcomes demonstrate that auditory rehabilitation via CIs could have a long-term positive impact on cognitive abilities. Given that older adults' cognitive abilities are on the trajectory of progressive decline with age, these results highlight the need to increase the adoption of CIs among this population.
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Affiliation(s)
- Sora An
- Department of Communication Disorders, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Eunha Jo
- Department of Communication Disorders, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Sang Beom Jun
- Department of Electronic and Electrical Engineering, Ewha Womans University, Seoul, 03760, Republic of Korea
- Graduate Program in Smart Factory, Ewha Womans University, Seoul, 03760, Republic of Korea
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Jee Eun Sung
- Department of Communication Disorders, Ewha Womans University, Seoul, 03760, Republic of Korea
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Gao M, Feng T, Zhao F, Shen J, Zheng Y, Liang J, Yang H. Cognitive reserve disorder in age-related hearing loss: cognitive cortical compensatory to auditory perceptual processing. Cereb Cortex 2023; 33:9616-9626. [PMID: 37381582 DOI: 10.1093/cercor/bhad230] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/07/2023] [Accepted: 06/08/2023] [Indexed: 06/30/2023] Open
Abstract
The aim of this study is to ascertain the mechanisms of cognitive reserve disorder in age-related hearing loss (ARHL), to study the correlation between ARHL and cognitive decline via EEG, and to reverse the adverse remodeling of auditory-cognitive connectivity with hearing aids (HAs). In this study, 32 participants were enrolled, including 12 with ARHLs, 9 with HAs, and 11 healthy controls (HCs), to undergo EEG, Pure Tone Average (PTA), Montreal Cognitive Assessment (MoCA), and other general cognitive tests. There were the lowest MoCA in the ARHL group (P = 0.001), especially in language and abstraction. In the ARHL group, power spectral density of the gamma in right middle temporal gyrus was significantly higher than HC and HA groups, while functional connectivity between superior frontal gyrus and cingulate gyrus was weaker than HC group (P = 0.036) and HA group (P = 0.021). In the HA group, superior temporal gyrus and cuneus had higher connectivity than in the HC group (P = 0.036). In the ARHL group, DeltaTM_DTA (P = 0.042) and CTB (P = 0.011) were more frequent than in the HC group, while there was less DeltaTM_CTA (P = 0.029). PTA was found to be associated with MoCA (r = -0.580) and language (r = -0.572), DeltaTM_CTB had a likewise correlation with MoCA (r = 0.483) and language (r = 0.493), while DeltaTM_DTA was related to abstraction (r = -0.458). Cognitive cortexes compensate for worse auditory perceptual processing in ARHL, which relates to cognitive decline. The impaired functional connectivity between auditory and cognitive cortexes can be remodeled by HAs. DeltaTM may serve as a biomarker for early cognitive decline and decreased auditory speech perception in ARHL.
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Affiliation(s)
- Minqian Gao
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 West of Yan Jiang Road, Guangzhou 510120, China
- Institute of Hearing and Speech-Language Science, Sun Yat-sen University, 107 West of Yan Jiang Road, Guangzhou 510120, China
- Department of Hearing and Speech-Language Science, Guangzhou Xinhua College, 19 of Hua Mei Road, Guangzhou 510520, China
| | - Tianci Feng
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 West of Yan Jiang Road, Guangzhou 510120, China
| | - Fei Zhao
- Centre for Speech and Language Therapy and Hearing Science, School of Sport and Health Sciences, Cardiff Metropolitan University, Llandaff Campus, 200 Western Avenue, Cardiff CF5 2YB, United Kingdom
| | - Jingxian Shen
- Key Laboratory of Brain, Cognition and Education Science, Ministry of Education, Institute for Brain Research and Rehabilitation, South China Normal University, 55 West of Zhongshan Avenue, Guangzhou 510631, China
- Department for Neuroradiology, School of Medicine, Technical University Munich, Ismaningerstr 22, Munich 81675, Germany
| | - Yiqing Zheng
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 West of Yan Jiang Road, Guangzhou 510120, China
- Institute of Hearing and Speech-Language Science, Sun Yat-sen University, 107 West of Yan Jiang Road, Guangzhou 510120, China
- Department of Hearing and Speech-Language Science, Guangzhou Xinhua College, 19 of Hua Mei Road, Guangzhou 510520, China
| | - Jiuxing Liang
- Key Laboratory of Brain, Cognition and Education Science, Ministry of Education, Institute for Brain Research and Rehabilitation, South China Normal University, 55 West of Zhongshan Avenue, Guangzhou 510631, China
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, Sun Yat-Sen University, 132 East of Waihuan Road, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
| | - Haidi Yang
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 West of Yan Jiang Road, Guangzhou 510120, China
- Institute of Hearing and Speech-Language Science, Sun Yat-sen University, 107 West of Yan Jiang Road, Guangzhou 510120, China
- Department of Hearing and Speech-Language Science, Guangzhou Xinhua College, 19 of Hua Mei Road, Guangzhou 510520, China
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Guerrieri M, Di Mauro R, Di Girolamo S, Di Stadio A. Hearing and Ageing. Subcell Biochem 2023; 103:279-290. [PMID: 37120472 DOI: 10.1007/978-3-031-26576-1_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Age-related hearing loss (ARHL), or presbycusis, occurs in most mammals, humans included, with a different age of onset and magnitude of loss. It is associated with two major symptoms: loss of sensitivity to sound, especially for high pitches, and a reduced ability to understand speech in background noise. This phenomenon involves both the peripheral structures of the inner ear and the central acoustic pathways. Several mechanisms have been identified as pro-ageing in the human cochlea. The main one is the oxidative stress. The inner ear physiological degeneration can be affected by both intrinsic conditions, such as genetic predisposition, and extrinsic ones, such as noise exposure. The magnitude of neuronal loss precedes and exceeds that of inner hair cell loss, which is also less important than the loss of outer hair cells. Patients with HL often develop atrophy of the temporal lobe (auditory cortex) and brain gliosis can contribute to the development of a central hearing loss. The presence of white matter hyperintensities (WMHs) on the MRI, which is radiologic representation of brain gliosis, can justify a central HL due to demyelination in the superior auditory pathways. Recently, the presence of WMHs has been correlated with the inability to correctly understand words in elderly with normal auditory thresholds.
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Affiliation(s)
| | - Roberta Di Mauro
- ENT Department, MVZ Dr. Roser und Kollegen, Remchingen, Baden-Württemberg, Germany
| | | | - Arianna Di Stadio
- GF Ingrassia Department, University of Catania, Catania, Italy.
- , Rome, Italy.
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Brewster KK, Deal JA, Lin FR, Rutherford BR. Considering hearing loss as a modifiable risk factor for dementia. Expert Rev Neurother 2022; 22:805-813. [PMID: 36150235 PMCID: PMC9647784 DOI: 10.1080/14737175.2022.2128769] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 09/22/2022] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Accumulating evidence links hearing loss to impaired cognitive performance and increased risk for dementia. Hearing loss can lead to deafferentation-induced atrophy of frontotemporal brain regions and dysregulation of cognitive control networks from increased listening effort. Hearing loss is also associated with reduced social engagement, loneliness, and depression, which are independently associated with poor cognitive function. AREAS COVERED We summarize the evidence and postulated mechanisms linking hearing loss to dementia in older adults and synthesize the available literature demonstrating beneficial effects of hearing remediation on brain structure and function. EXPERT OPINION : Further research is needed to evaluate whether treatment of hearing loss may reduce risk of cognitive decline and improve neural consequences of hearing loss. Studies may investigate the pathologic mechanisms linking these late-life disorders and identify individuals vulnerable to dementia, and future clinical trials may evaluate whether hearing treatment may reduce the risk for dementia.
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Affiliation(s)
- Katharine K Brewster
- Columbia University Vagelos College of Physicians and Surgeons, Department of Psychiatry, New York State Psychiatric Institute, New York
| | - Jennifer A Deal
- Department of Otolaryngology, Johns Hopkins Bloomberg School of Public Health, Department of Epidemiology, Johns Hopkins University, Center on Aging and Health, Johns Hopkins University School of Medicine
| | - Frank R Lin
- Department of Otolaryngology, Johns Hopkins Bloomberg School of Public Health, Department of Epidemiology, Johns Hopkins University School of Medicine
| | - Bret R Rutherford
- Columbia University Vagelos College of Physicians and Surgeons, Department of Psychiatry, New York State Psychiatric Institute, New York, USA
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Waechter S, Jönsson A. Hearing Aids Mitigate Tinnitus, But Does It Matter if the Patient Receives Amplification in Accordance With Their Hearing Impairment or Not? A Meta-Analysis. Am J Audiol 2022; 31:789-818. [PMID: 35973434 DOI: 10.1044/2022_aja-22-00004] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
PURPOSE The purpose of the present meta-analysis is to explore the potential effects of objective verification of hearing aid amplification on tinnitus-related outcomes. METHOD Twenty-seven studies reporting tinnitus outcomes pre and post hearing aid fitting were identified through a systematic literature search. From these studies, data from 1,400 participants were included in the present meta-analysis. Studies were divided into subgroups based on whether they had reported performing objective verification of the participants' hearing aid amplification or not. Outcome measures were tinnitus distress and tinnitus loudness. RESULTS Meta-analyses of all included studies indicated verified amplification to result in significantly enhanced reduction of tinnitus loudness (p < .00001), while the enhanced reduction of tinnitus distress only approached statistical significance (p = .07). However, when excluding an outlier from the subgroup of studies using unverified amplification, individuals receiving verified amplification showed significantly greater reduction of tinnitus distress (p = .02). In addition, analyses of longitudinal effects revealed that the reductions of tinnitus distress decreased over time among individuals receiving unverified amplification but increased over time among individuals receiving verified amplification. CONCLUSIONS The present meta-analysis indicates verified hearing aid amplification to be superior to unverified amplification in terms of reduction of tinnitus loudness and distress. The longitudinal increase of mitigation of tinnitus distress with verified amplification only may reflect improved neural reorganization and/or better adherence to hearing aid use, with verified compared to unverified amplification. Due to the low cost of hearing aid verification compared to the high societal cost of tinnitus, objective verification of hearing aid amplification for tinnitus patients is recommended.
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Affiliation(s)
- Sebastian Waechter
- Department of Logopedics, Phoniatrics and Audiology, Lund University, Sweden
| | - Anders Jönsson
- Department of Logopedics, Phoniatrics and Audiology, Lund University, Sweden
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Hearing Rehabilitative Treatment for Older Adults With Comorbid Hearing Loss and Depression: Effects on Depressive Symptoms and Executive Function. Am J Geriatr Psychiatry 2022; 30:448-458. [PMID: 34489159 PMCID: PMC8841567 DOI: 10.1016/j.jagp.2021.08.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 08/09/2021] [Accepted: 08/10/2021] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Recent research has revealed important neural and psychiatric consequences of hearing loss (HL) in older adults. This pilot study examined the neural effects of HL and the impact of hearing aids on neuropsychiatric outcomes in major depressive disorder (MDD). DESIGN Twelve-week, double-blind, randomized controlled trial. PARTICIPANTS/INTERVENTION N = 25 (≥60 years) with MDD and moderate-profound HL were randomized to receive hearing aids (100% gain targets) or sham hearing aids (flat 30 dB HL) in addition to psychiatric treatment-as-usual. MEASUREMENTS Depressive symptoms (Hamilton Rating Scale for Depression [HRSD]), executive functioning (NIH Toolbox Flanker), integrity of auditory brain areas (structural MRI, diffusion tensor imaging). RESULTS At baseline, worse speech discrimination was associated with auditory cortical thinning (Left anterior transverse temporal gyrus: r = 0.755, p = 0.012) and lower integrity of the superior longitudinal fasciculus (FA: Left r = 0.772, p = 0.025, Right r = 0.782, p = 0.022). After 12-weeks, hearing aids were effective at improving hearing functioning (Hearing Handicap for the Elderly: active -12.47 versus sham -4.19, t = -2.64, df = 18, p = 0.016) and immediate memory (active +14.9 versus sham +5.7, t = 2.28, df = 16, p = 0.037). Moderate improvement was observed for hearing aids on executive functioning but did not reach statistical significance (Flanker: active +4.8 versus sham -2.4, t = 1.95, df = 15, p = 0.071). No significant effect on depression was found (HRSD: active -5.50 versus sham -7.32, t = 0.75, df = 19, p = 0.46). CONCLUSIONS HL can affect brain regions important for auditory and cognitive processing, and hearing remediation may have beneficial effects on executive functioning in MDD. Future studies may evaluate whether impairment in cognitive control consequent to HL may be an important risk mechanism for MDD.
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Chen J, Zhao Y, Zou T, Wen X, Zhou X, Yu Y, Liu Z, Li M. Sensorineural Hearing Loss Affects Functional Connectivity of the Auditory Cortex, Parahippocampal Gyrus and Inferior Prefrontal Gyrus in Tinnitus Patients. Front Neurosci 2022; 16:816712. [PMID: 35431781 PMCID: PMC9011051 DOI: 10.3389/fnins.2022.816712] [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: 11/17/2021] [Accepted: 03/10/2022] [Indexed: 11/22/2022] Open
Abstract
Background Tinnitus can interfere with a patient’s speech discrimination, but whether tinnitus itself or the accompanying sensorineural hearing loss (SNHL) causes this interference is still unclear. We analyzed event-related electroencephalograms (EEGs) to observe auditory-related brain function and explore the possible effects of SNHL on auditory processing in tinnitus patients. Methods Speech discrimination scores (SDSs) were recorded in 21 healthy control subjects, 24 tinnitus patients, 24 SNHL patients, and 27 patients with both SNHL and tinnitus. EEGs were collected under an oddball paradigm. Then, the mismatch negativity (MMN) amplitude and latency, the clustering coefficient and average path length of the whole network in the tinnitus and SNHL groups were compared with those in the control group. Additionally, we analyzed the intergroup differences in functional connectivity among the primary auditory cortex (AC), parahippocampal gyrus (PHG), and inferior frontal gyrus (IFG). Results SNHL patients with or without tinnitus had lower SDSs than the control subjects. Compared with control subjects, tinnitus patients with or without SNHL had decreased MMN amplitudes, and SNHL patients had longer MMN latencies. Tinnitus patients without SNHL had a smaller clustering coefficient and a longer whole-brain average path length than the control subjects. SNHL patients with or without tinnitus had a smaller clustering coefficient and a longer average path length than patients with tinnitus alone. The connectivity strength from the AC to the PHG and IFG was lower on the affected side in tinnitus patients than that in control subjects; the connectivity strength from the PHG to the IFG was also lower on the affected side in tinnitus patients than that in control subjects. However, the connectivity strength from the IFG to the AC was stronger in tinnitus patients than that in the control subjects. In SNHL patients with or without tinnitus, these changes were magnified. Conclusion Changes in auditory processing in tinnitus patients do not influence SDSs. Instead, SNHL might cause the activity of the AC, PHG and IFG to change, resulting in impaired speech recognition in tinnitus patients with SNHL.
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Grégoire A, Deggouj N, Dricot L, Decat M, Kupers R. Brain Morphological Modifications in Congenital and Acquired Auditory Deprivation: A Systematic Review and Coordinate-Based Meta-Analysis. Front Neurosci 2022; 16:850245. [PMID: 35418829 PMCID: PMC8995770 DOI: 10.3389/fnins.2022.850245] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 03/01/2022] [Indexed: 12/02/2022] Open
Abstract
Neuroplasticity following deafness has been widely demonstrated in both humans and animals, but the anatomical substrate of these changes is not yet clear in human brain. However, it is of high importance since hearing loss is a growing problem due to aging population. Moreover, knowing these brain changes could help to understand some disappointing results with cochlear implant, and therefore could improve hearing rehabilitation. A systematic review and a coordinate-based meta-analysis were realized about the morphological brain changes highlighted by MRI in severe to profound hearing loss, congenital and acquired before or after language onset. 25 papers were included in our review, concerning more than 400 deaf subjects, most of them presenting prelingual deafness. The most consistent finding is a volumetric decrease in gray matter around bilateral auditory cortex. This change was confirmed by the coordinate-based meta-analysis which shows three converging clusters in this region. The visual areas of deaf children is also significantly impacted, with a decrease of the volume of both gray and white matters. Finally, deafness is responsible of a gray matter increase within the cerebellum, especially at the right side. These results are largely discussed and compared with those from deaf animal models and blind humans, which demonstrate for example a much more consistent gray matter decrease along their respective primary sensory pathway. In human deafness, a lot of other factors than deafness could interact on the brain plasticity. One of the most important is the use of sign language and its age of acquisition, which induce among others changes within the hand motor region and the visual cortex. But other confounding factors exist which have been too little considered in the current literature, such as the etiology of the hearing impairment, the speech-reading ability, the hearing aid use, the frequent associated vestibular dysfunction or neurocognitive impairment. Another important weakness highlighted by this review concern the lack of papers about postlingual deafness, whereas it represents most of the deaf population. Further studies are needed to better understand these issues, and finally try to improve deafness rehabilitation.
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Affiliation(s)
- Anaïs Grégoire
- Department of ENT, Cliniques Universitaires Saint-Luc, Brussels, Belgium
- Institute of NeuroScience (IoNS), UCLouvain, Brussels, Belgium
| | - Naïma Deggouj
- Department of ENT, Cliniques Universitaires Saint-Luc, Brussels, Belgium
- Institute of NeuroScience (IoNS), UCLouvain, Brussels, Belgium
| | - Laurence Dricot
- Institute of NeuroScience (IoNS), UCLouvain, Brussels, Belgium
| | - Monique Decat
- Department of ENT, Cliniques Universitaires Saint-Luc, Brussels, Belgium
- Institute of NeuroScience (IoNS), UCLouvain, Brussels, Belgium
| | - Ron Kupers
- Institute of NeuroScience (IoNS), UCLouvain, Brussels, Belgium
- Department of Neuroscience, Panum Institute, University of Copenhagen, Copenhagen, Denmark
- Ecole d’Optométrie, Université de Montréal, Montréal, QC, Canada
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Basso L, Boecking B, Neff P, Brueggemann P, Peters EMJ, Mazurek B. Hair-cortisol and hair-BDNF as biomarkers of tinnitus loudness and distress in chronic tinnitus. Sci Rep 2022; 12:1934. [PMID: 35121746 PMCID: PMC8817043 DOI: 10.1038/s41598-022-04811-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 12/21/2021] [Indexed: 12/23/2022] Open
Abstract
The role of stress and its neuroendocrine mediators in tinnitus is unclear. In this study, we measure cortisol as an indicator of hypothalamus–pituitary–adrenal (HPA) axis alterations and brain-derived neurotrophic factor (BDNF) as a marker of adaptive neuroplasticity in hair of chronic tinnitus patients to investigate relationships with tinnitus-related and psychological factors. Cross-sectional data from chronic tinnitus inpatients were analyzed. Data collection included hair sampling, pure tone audiometry, tinnitus pitch and loudness matching, and psychometric questionnaires. Elastic net regressions with n-fold cross-validation were performed for cortisol (N = 91) and BDNF (N = 87). For hair-cortisol (R2 = 0.10), the strongest effects were sampling in autumn and body-mass index (BMI) (positive), followed by tinnitus loudness (positive) and smoking (negative). For hair-BDNF (R2 = 0.28), the strongest effects were hearing aid use, shift work (positive), and tinnitus loudness (negative), followed by smoking, tinnitus-related distress (Tinnitus Questionnaire), number of experienced traumatic events (negative), and physical health-related quality of life (Short Form-12 Health Survey) (positive). These findings suggest that in chronic tinnitus patients, higher perceived tinnitus loudness is associated with higher hair-cortisol and lower hair-BDNF, and higher tinnitus-related distress with lower hair-BDNF. Regarding hair-BDNF, traumatic experiences appear to have additional stress-related effects, whereas hearing aid use and high physical health-related quality of life appear beneficial. Implications include the potential use of hair-cortisol and hair-BDNF as biomarkers of tinnitus loudness or distress and the need for intensive future research into chronic stress-related HPA axis and neuroplasticity alterations in chronic tinnitus.
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Affiliation(s)
- Laura Basso
- Tinnitus Center, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Benjamin Boecking
- Tinnitus Center, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Patrick Neff
- Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany.,University Research Priority Program 'Dynamics of Healthy Aging', University of Zurich, Zurich, Switzerland.,Department of Psychology, Centre for Cognitive Neuroscience, University of Salzburg, Salzburg, Austria
| | - Petra Brueggemann
- Tinnitus Center, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Eva M J Peters
- Psychoneuroimmunology Laboratory, Department of Psychosomatic Medicine and Psychotherapy, Justus-Liebig University Giessen, Giessen, Germany.,Psychosomatics and Psychotherapy, Charité Center 12 Internal Medicine and Dermatology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Birgit Mazurek
- Tinnitus Center, Charité - Universitätsmedizin Berlin, Berlin, Germany.
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12
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Cui W, Wang S, Chen B, Fan G. Altered Functional Network in Infants With Profound Bilateral Congenital Sensorineural Hearing Loss: A Graph Theory Analysis. Front Neurosci 2022; 15:810833. [PMID: 35095404 PMCID: PMC8795617 DOI: 10.3389/fnins.2021.810833] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 12/22/2021] [Indexed: 12/17/2022] Open
Abstract
Functional magnetic resonance imaging (fMRI) studies have suggested that there is a functional reorganization of brain areas in patients with sensorineural hearing loss (SNHL). Recently, graph theory analysis has brought a new understanding of the functional connectome and topological features in central neural system diseases. However, little is known about the functional network topology changes in SNHL patients, especially in infants. In this study, 34 infants with profound bilateral congenital SNHL and 28 infants with normal hearing aged 11–36 months were recruited. No difference was found in small-world parameters and network efficiency parameters. Differences in global and nodal topologic organization, hub distribution, and whole-brain functional connectivity were explored using graph theory analysis. Both normal-hearing infants and SNHL infants exhibited small-world topology. Furthermore, the SNHL group showed a decreased nodal degree in the bilateral thalamus. Six hubs in the SNHL group and seven hubs in the normal-hearing group were identified. The left middle temporal gyrus was a hub only in the SNHL group, while the right parahippocampal gyrus and bilateral temporal pole were hubs only in the normal-hearing group. Functional connectivity between auditory regions and motor regions, between auditory regions and default-mode-network (DMN) regions, and within DMN regions was found to be decreased in the SNHL group. These results indicate a functional reorganization of brain functional networks as a result of hearing loss. This study provides evidence that functional reorganization occurs in the early stage of life in infants with profound bilateral congenital SNHL from the perspective of complex networks.
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13
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Uchida Y, Nishita Y, Otsuka R, Sugiura S, Sone M, Yamasoba T, Kato T, Iwata K, Nakamura A. Aging Brain and Hearing: A Mini-Review. Front Aging Neurosci 2022; 13:791604. [PMID: 35095475 PMCID: PMC8792606 DOI: 10.3389/fnagi.2021.791604] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 12/24/2021] [Indexed: 02/03/2023] Open
Abstract
Brain reserve is a topic of great interest to researchers in aging medicine field. Some individuals retain well-preserved cognitive function until they fulfill their lives despite significant brain pathology. One concept that explains this paradox is the reserve hypothesis, including brain reserve that assumes a virtual ability to mitigate the effects of neuropathological changes and reduce the effects on clinical symptoms flexibly and efficiently by making complete use of the cognitive and compensatory processes. One of the surrogate measures of reserve capacity is brain volume. Evidence that dementia and hearing loss are interrelated has been steadily accumulating, and age-related hearing loss is one of the most promising modifiable risk factors of dementia. Research focused on the imaging analysis of the aged brain relative to auditory function has been gradually increasing. Several morphological studies have been conducted to understand the relationship between hearing loss and brain volume. In this mini review, we provide a brief overview of the concept of brain reserve, followed by a small review of studies addressing brain morphology and hearing loss/hearing compensation, including the findings obtained from our previous study that hearing loss after middle age could affect hippocampal and primary auditory cortex atrophy.
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Affiliation(s)
- Yasue Uchida
- Department of Otolaryngology, Aichi Medical University, Nagakute, Japan
- Department of Otorhinolaryngology, National Center for Geriatrics and Gerontology, Obu, Japan
- *Correspondence: Yasue Uchida,
| | - Yukiko Nishita
- Department of Epidemiology of Aging, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Rei Otsuka
- Section of NILS-LSA, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Saiko Sugiura
- Department of Otorhinolaryngology, National Center for Geriatrics and Gerontology, Obu, Japan
- Toyota Josui Mental Clinic, Toyota, Japan
| | - Michihiko Sone
- Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tatsuya Yamasoba
- Department of Otolaryngology-Head and Neck Surgery, Faculty of Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takashi Kato
- Department of Clinical and Experimental Neuroimaging, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Kaori Iwata
- Department of Clinical and Experimental Neuroimaging, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Akinori Nakamura
- Department of Clinical and Experimental Neuroimaging, National Center for Geriatrics and Gerontology, Obu, Japan
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14
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Lavie L, Shechter Shvartzman L, Banai K. Plastic changes in speech perception in older adults with hearing impairment following hearing aid use: a systematic review. Int J Audiol 2021; 61:975-983. [PMID: 34928753 DOI: 10.1080/14992027.2021.2014073] [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] [Indexed: 10/19/2022]
Abstract
OBJECTIVE Whether hearing aid use in older adults modifies speech perception over time is not clear. To address this question, we systematically reviewed studies in which older first-time hearing aid users and controls were followed over time. DESIGN The review was pre-registered in PROSPERO and performed in accordance with the statement on Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). The question, inclusion and exclusion criteria were defined using the Population, Intervention, Control, Outcomes and Study design (PICOS) framework. Studies with no controls, studies in which participants and controls were tested at only one-time point, with no follow-up and no pre-fitting measures, or when outcome measures did not include speech measures, were excluded. STUDY SAMPLE 6113 studies were screened, out of which 12 studies, published between 1996 and 2021, met the inclusion and exclusion criteria and were included in the final review. RESULTS 9 of the 12 studies found evidence for amplification-induced auditory plasticity in older adults, expressed in improved speech perception. CONCLUSIONS The results suggest amplification-induced improvements in speech perception over time, but findings should be interpreted with caution because overall improvements were small, and the studies' quality was moderate.
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Affiliation(s)
- Limor Lavie
- Department of Communication Sciences and Disorders, University of Haifa, Haifa, Israel
| | | | - Karen Banai
- Department of Communication Sciences and Disorders, University of Haifa, Haifa, Israel
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15
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Liu Y, Zhao C, Yang J, Chen P, Gao M, Wang D, Zhao S. Audiological and subjective benefit with a new adhesive bone conduction hearing aid in children with congenital unilateral microtia and atresia. Eur Arch Otorhinolaryngol 2021; 279:4289-4301. [PMID: 34816297 DOI: 10.1007/s00405-021-07168-8] [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: 01/21/2021] [Accepted: 11/02/2021] [Indexed: 11/29/2022]
Abstract
PURPOSE This study aimed to evaluate the audiological benefits and subjective satisfaction in using a new adhesive bone conduction hearing aid in children with congenital unilateral microtia and atresia. METHODS We evaluated the effectiveness of the hearing aid using the sound field hearing threshold, speech recognition ability under quiet and noise, and subjective questionnaires in 13 children (5-15 years old). RESULTS The mean sound field hearing threshold significantly improved with a gain of 25.4 ± 4.9 dB HL. Mean word recognition scores were ameliorated in quiet and noise by 1.9 ± 2.5% and 7.3 ± 5.3%, respectively. Speech recognition ability results in noise varied; when the speech signal and noise were presented from the front, the mean speech recognition ability improved by 2.5 ± 1.6 dB signal-to-noise ratios (SNR). When noise was presented towards the normal hearing side, speech understanding was improved by 2.9 ± 1.6 dB SNR. When the speech signal was presented from the atretic side with noise from the normal hearing side, an improvement of 5.7 ± 3.4 dB SNR (p < 0.001) was noted. However, when noise was presented towards the newly aided atretic ear, no statistical significance was found. The questionnaire results indicated that the hearing device provided benefits in speech recognition ability in different complex situations, with high satisfaction rates. CONCLUSION The adhesive bone conduction hearing aid investigated here offers a concealed and aesthetic method to improve hearing in children with congenital unilateral microtia and atresia during their early years, with high subjective satisfaction.
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Affiliation(s)
- Yujie Liu
- Department of Otolaryngology Head and Neck Surgery, Ministry of Education Key Laboratory of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Chunli Zhao
- Department of Otolaryngology Head and Neck Surgery, Ministry of Education Key Laboratory of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Jinsong Yang
- Department of Otolaryngology Head and Neck Surgery, Ministry of Education Key Laboratory of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Peiwei Chen
- Department of Otolaryngology Head and Neck Surgery, Ministry of Education Key Laboratory of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Mengdie Gao
- Department of Otolaryngology Head and Neck Surgery, Ministry of Education Key Laboratory of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Danni Wang
- Department of Otolaryngology Head and Neck Surgery, Ministry of Education Key Laboratory of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Shouqin Zhao
- Department of Otolaryngology Head and Neck Surgery, Ministry of Education Key Laboratory of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China.
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16
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Manno FAM, Rodríguez-Cruces R, Kumar R, Ratnanather JT, Lau C. Hearing loss impacts gray and white matter across the lifespan: Systematic review, meta-analysis and meta-regression. Neuroimage 2021; 231:117826. [PMID: 33549753 PMCID: PMC8236095 DOI: 10.1016/j.neuroimage.2021.117826] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 12/15/2022] Open
Abstract
Hearing loss is a heterogeneous disorder thought to affect brain reorganization across the lifespan. Here, structural alterations of the brain due to hearing loss are assessed by using unique effect size metrics based on Cohen's d and Hedges' g. These metrics are used to map coordinates of gray matter (GM) and white matter (WM) alterations from bilateral congenital and acquired hearing loss populations. A systematic review and meta-analysis revealed m = 72 studies with structural alterations measured with magnetic resonance imaging (MRI) (bilateral = 64, unilateral = 8). The bilateral studies categorized hearing loss into congenital and acquired cases (n = 7,445) and control cases (n = 2,924), containing 66,545 datapoint metrics. Hearing loss was found to affect GM and underlying WM in nearly every region of the brain. In congenital hearing loss, GM decreased most in the frontal lobe. Similarly, acquired hearing loss had a decrease in frontal lobe GM, albeit the insula was most decreased. In congenital, WM underlying the frontal lobe GM was most decreased. In congenital, the right hemisphere was more negatively impacted than the left hemisphere; however, in acquired, this was the opposite. The WM alterations most frequently underlined GM alterations in congenital hearing loss, while acquired hearing loss studies did not frequently assess the WM metric. Future studies should use the endophenotype of hearing loss as a prognostic template for discerning clinical outcomes.
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Affiliation(s)
- Francis A M Manno
- Department of Physics, City University of Hong Kong, Hong Kong SAR, China.
| | | | - Rachit Kumar
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA; Medical Scientist Training Program at the University of Pennsylvania, Philadelphia, USA
| | - J Tilak Ratnanather
- Center for Imaging Science and Institute for Computational Medicine, Department of Biomedical Engineering, Johns Hopkins University, Baltimore, USA
| | - Condon Lau
- Department of Physics, City University of Hong Kong, Hong Kong SAR, China.
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17
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Brewster KK, Golub JS, Rutherford BR. Neural circuits and behavioral pathways linking hearing loss to affective dysregulation in older adults. NATURE AGING 2021; 1:422-429. [PMID: 37118018 PMCID: PMC10154034 DOI: 10.1038/s43587-021-00065-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 04/12/2021] [Indexed: 04/30/2023]
Abstract
Substantial evidence now links age-related hearing loss to incident major depressive disorder in older adults. However, research examining the neural circuits and behavioral mechanisms by which age-related hearing loss leads to depression is at an early phase. It is known that hearing loss has adverse structural and functional brain consequences, is associated with reduced social engagement and loneliness, and often results in tinnitus, which can independently affect cognitive control and emotion processing circuits. While pathways leading from these sequelae of hearing loss to affective dysregulation and depression are intuitive to hypothesize, few studies have yet been designed to provide conclusive evidence for specific pathophysiological mechanisms. Here we review the neurobiological and behavioral consequences of age-related hearing loss, present a model linking them to increased risk for major depressive disorder and suggest how future studies may facilitate the development of rationally designed therapeutic interventions for older adults with impaired hearing to reduce risk for depression and/or ameliorate depressive symptoms.
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Affiliation(s)
- Katharine K Brewster
- Department of Psychiatry, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA.
- New York State Psychiatric Institute, New York, NY, USA.
| | - Justin S Golub
- Department of Otolaryngology-Head and Neck Surgery, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA
| | - Bret R Rutherford
- Department of Psychiatry, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA
- New York State Psychiatric Institute, New York, NY, USA
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18
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Ponticorvo S, Manara R, Pfeuffer J, Cappiello A, Cuoco S, Pellecchia MT, Troisi D, Scarpa A, Cassandro E, Di Salle F, Esposito F. Long-Range Auditory Functional Connectivity in Hearing Loss and Rehabilitation. Brain Connect 2021; 11:483-492. [PMID: 33478362 DOI: 10.1089/brain.2020.0814] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background: Patients with age-related sensorineural hearing loss (HL) may benefit from auditory input amplification by using hearing aids (HAs). However, the impact of both HL- and HA-based rehabilitation on central auditory functional connectivity (FC) is not clear. Methodology: Sixty-two HL (22 females, aged 64.4 ± 7.6 years, pure-tone average 50.9 ± 14.7 dB right ear, 50.7 ± 12.9 dB left ear) and 32 normal hearing (NH) subjects (22 females, aged 59.3 ± 7.3 years) were examined in a 3T magnetic resonance imaging (MRI) study. HL patients were analyzed cross-sectionally at baseline (vs. NH subjects) and longitudinally at 6-month follow-up. Between the 2 scans, 31/62 patients used the HA 9.5 ± 3.8 h a day. Arterial spin labeling and blood oxygen level-dependent resting-state functional MRI were performed to measure regional perfusion in the primary auditory cortex and, from here to the whole brain, seed-based FC was performed. Before each scan, HL patients underwent audiological and neurological assessments. Results: At baseline, the HL condition was associated with regional hypoperfusion in right Heschl's gyrus (seed) and negative seed-based FC (anticorrelation) in posterior brain regions. Long-range FC in the precuneus correlated negatively with pure-tone and speech reception average thresholds. At 6-month follow-up, HA usage was associated with seed-based FC increase in the right superior frontal gyrus (SFG) and seed-based FC reduction in the right middle temporal gyrus. Long-range FC changes in the SFG correlated positively with executive function improvements. Conclusions: These findings suggest that HA-based rehabilitation may not reverse HL-related neural effects and yet carry neurological benefits by retuning long-range FC of the auditory system. Impact statement Age-related sensorineural hearing loss (HL) affects 40% to 60% of the worldwide population and a common, viable rehabilitation strategy is to provide auditory input amplification through hearing aids (HAs). By targeting metabolically depressed, auditory cortical centers, our work reveals a possible neural link between peripheral and central vulnerability in HL patients in the form of aberrant, long-range, functional connectivity effects. Similarly, we unveil how wearing HAs for 6 months may induce neuroplastic changes that positively correlate with improved neuropsychological performances.
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Affiliation(s)
- Sara Ponticorvo
- Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, Baronissi, Italy
| | - Renzo Manara
- Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, Baronissi, Italy.,Department of Neuroscience, University of Padova, Padova, Italy
| | - Josef Pfeuffer
- MR Application Development, Siemens Healthcare GmbH, Erlangen, Germany
| | - Arianna Cappiello
- Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, Baronissi, Italy.,University Hospital "San Giovanni di Dio e Ruggi D'Aragona," Scuola Medica Salernitana, Salerno, Italy
| | - Sofia Cuoco
- Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, Baronissi, Italy.,University Hospital "San Giovanni di Dio e Ruggi D'Aragona," Scuola Medica Salernitana, Salerno, Italy
| | - Maria Teresa Pellecchia
- Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, Baronissi, Italy.,University Hospital "San Giovanni di Dio e Ruggi D'Aragona," Scuola Medica Salernitana, Salerno, Italy
| | - Donato Troisi
- Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, Baronissi, Italy.,University Hospital "San Giovanni di Dio e Ruggi D'Aragona," Scuola Medica Salernitana, Salerno, Italy
| | - Alfonso Scarpa
- Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, Baronissi, Italy.,University Hospital "San Giovanni di Dio e Ruggi D'Aragona," Scuola Medica Salernitana, Salerno, Italy
| | - Ettore Cassandro
- Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, Baronissi, Italy.,University Hospital "San Giovanni di Dio e Ruggi D'Aragona," Scuola Medica Salernitana, Salerno, Italy
| | - Francesco Di Salle
- Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, Baronissi, Italy.,University Hospital "San Giovanni di Dio e Ruggi D'Aragona," Scuola Medica Salernitana, Salerno, Italy
| | - Fabrizio Esposito
- Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, Baronissi, Italy.,University Hospital "San Giovanni di Dio e Ruggi D'Aragona," Scuola Medica Salernitana, Salerno, Italy
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19
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Chen Q, Lv H, Wang Z, Wei X, Zhao P, Yang Z, Gong S, Wang Z. Brain Structural and Functional Reorganization in Tinnitus Patients Without Hearing Loss After Sound Therapy: A Preliminary Longitudinal Study. Front Neurosci 2021; 15:573858. [PMID: 33776630 PMCID: PMC7991098 DOI: 10.3389/fnins.2021.573858] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 02/22/2021] [Indexed: 02/05/2023] Open
Abstract
Sound therapy is one of the most common first-line treatments for idiopathic tinnitus. We aimed to investigate the brain structural and functional alterations between patients with idiopathic tinnitus without hearing loss (HL) and healthy controls (HCs) and between patients before and after sound therapy (narrow band noise). Structural and resting-state functional images were acquired from 13 tinnitus patients without HL and 18 HCs before and after 6 months of narrow band sound therapy (only patients received the treatment). Voxel-based morphometry (VBM) and independent component analysis (ICA) were conducted to separately investigate the brain structural and functional changes. Associations between brain changes and clinical variables were also performed. After the treatment, the % improvement of THI score was −1.30% (± 63.40%). Compared with HCs, tinnitus patients showed gray matter and white matter atrophy in the left middle temporal gyrus at baseline, and the gray matter volume was further reduced after the treatment. The patients also showed increased white matter volume in the cingulum (cingulate), right calcarine, left rolandic operculum, and left parietal and frontal lobes. Additionally, compared with HCs, tinnitus patients exhibited positive [medial visual network (mVN) and sensorimotor network (SMN), mVN and auditory network (AN)] and negative [mVN and lateral visual network (lVN)] internetwork functional connectivity (FC) at baseline and negative [left frontoparietal network (LFPN) and dorsal attention network (DAN), AN and posterior default mode network (pDMN)] internetwork FC after the narrow band sound therapy. The patients also showed negative [LFPN and right frontoparietal network (RFPN), LFPN and RFPN, anterior default mode network (aDMN) and AN, aDMN and DAN] internetwork FC after the treatment when compared with baseline. Our findings suggest that although the outcomes of idiopathic tinnitus patients without HL were not very good when the improvement of THI scores was used as an evaluation indicator, the patients experienced significant differences in auditory-related and non-auditory-related brain reorganization before and after the narrow band sound therapy, that is, sound therapy may have a significant effect on brain reorganization in patients with idiopathic tinnitus. This study may provide some new useful information for the understanding of mechanisms underlying idiopathic tinnitus.
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Affiliation(s)
- Qian Chen
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Han Lv
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Zhaodi Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Xuan Wei
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Pengfei Zhao
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Zhenghan Yang
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Shusheng Gong
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Zhenchang Wang
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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20
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Pinkl J, Cash EK, Evans TC, Neijman T, Hamilton JW, Ferguson SD, Martinez JL, Rumley J, Hunter LL, Moore DR, Stewart HJ. Short-Term Pediatric Acclimatization to Adaptive Hearing Aid Technology. Am J Audiol 2021; 30:76-92. [PMID: 33351648 DOI: 10.1044/2020_aja-20-00073] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Purpose This exploratory study assessed the perceptual, cognitive, and academic learning effects of an adaptive, integrated, directionality, and noise reduction hearing aid program in pediatric users. Method Fifteen pediatric hearing aid users (6-12 years old) received new bilateral, individually fitted Oticon Opn hearing aids programmed with OpenSound Navigator (OSN) processing. Word recognition in noise, sentence repetition in quiet, nonword repetition, vocabulary learning, selective attention, executive function, memory, and reading and mathematical abilities were measured within 1 week of the initial hearing aid fitting and 2 months post fit. Caregivers completed questionnaires assessing their child's listening and communication abilities prior to study enrollment and after 2 months of using the study hearing aids. Results Caregiver reporting indicated significant improvements in speech and sound perception, spatial sound awareness, and the ability to participate in conversations. However, there was no positive change in performance in any of the measured skills. Mathematical scores significantly declined after 2 months. Conclusions OSN provided a perceived improvement in functional benefit, compared to their previous hearing aids, as reported by caregivers. However, there was no positive change in listening skills, cognition, and academic success after 2 months of using OSN. Findings may have been impacted by reporter bias, limited sample size, and a relatively short trial period. This study took place during the summer when participants were out of school, which may have influenced the decline in mathematical scores. The results support further exploration with age- and audiogram-matched controls, larger sample sizes, and longer test-retest intervals that correspond to the academic school year.
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Affiliation(s)
- Joseph Pinkl
- Communication Sciences Research Center, Cincinnati Children's Hospital Medical Center, OH
- Department of Communication Sciences and Disorders, College of Allied Health Sciences, University of Cincinnati, OH
| | - Erin K. Cash
- Communication Sciences Research Center, Cincinnati Children's Hospital Medical Center, OH
- Department of Neuroscience, College of Arts and Sciences, University of Cincinnati, OH
| | - Tommy C. Evans
- Division of Audiology, Cincinnati Children's Hospital Medical Center, OH
| | - Timothy Neijman
- Division of Audiology, Cincinnati Children's Hospital Medical Center, OH
| | - Jean W. Hamilton
- Division of Audiology, Cincinnati Children's Hospital Medical Center, OH
| | - Sarah D. Ferguson
- Communication Sciences Research Center, Cincinnati Children's Hospital Medical Center, OH
- Department of Communication Sciences and Disorders, College of Allied Health Sciences, University of Cincinnati, OH
| | - Jasmin L. Martinez
- Communication Sciences Research Center, Cincinnati Children's Hospital Medical Center, OH
- Department of Communication Sciences and Disorders, College of Allied Health Sciences, University of Cincinnati, OH
| | - Johanne Rumley
- Oticon A/S, Kongebakken, Denmark
- Department of Nordic Studies and Linguistics, Faculty of Humanities, University of Copenhagen, Denmark
| | - Lisa L. Hunter
- Communication Sciences Research Center, Cincinnati Children's Hospital Medical Center, OH
- Department of Communication Sciences and Disorders, College of Allied Health Sciences, University of Cincinnati, OH
| | - David R. Moore
- Communication Sciences Research Center, Cincinnati Children's Hospital Medical Center, OH
- Department of Otolaryngology, College of Medicine, University of Cincinnati, OH
- Manchester Centre for Audiology and Deafness, The University of Manchester, United Kingdom
| | - Hannah J. Stewart
- Communication Sciences Research Center, Cincinnati Children's Hospital Medical Center, OH
- Division of Psychology and Language Sciences, University College London, United Kingdom
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21
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Di Stadio A, Ralli M, Roccamatisi D, Scarpa A, Della Volpe A, Cassandro C, Ricci G, Greco A, Bernitsas E. Hearing loss and dementia: radiologic and biomolecular basis of their shared characteristics. A systematic review. Neurol Sci 2021; 42:579-588. [PMID: 33409831 DOI: 10.1007/s10072-020-04948-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 11/27/2020] [Indexed: 02/07/2023]
Abstract
Dementia and hearing loss share radiologic and biologic findings that might explain their coexistence, especially in the elderly population. Brain atrophy has been observed in both conditions, as well as the presence of areas of gliosis. The brain atrophy is usually focal; it is located in the temporal lobe in patients with hearing loss, while it involves different part of brain in patients with dementia. Radiological studies have shown white matter hyperintensities (WMHs) in both conditions. WMHs have been correlated with the inability to correctly understand words in elderly persons with normal auditory thresholds and, the identification of these lesion in brain magnetic resonance imaging studies has been linked with an increased risk of developing cognitive loss. In addition to WMHs, some anatomopathological studies identified the presence of brain gliosis in the elderly's brain. The cause-effect link between hearing loss and dementia is still unknown, despite they might share some common findings. The aim of this systematic review is to analyze radiologic and biomolecular findings that these two conditions might share, identify a common pathological basis, and discuss the effects of hearing aids on prevention and treatment of cognitive decline in elderly patients with hearing loss.
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Affiliation(s)
- Arianna Di Stadio
- Otolaryngology Department, University of Perugia, Perugia, Italy. .,Neuroinflammation Lab, UCL Queen Square Neurology, London, UK.
| | - Massimo Ralli
- Department of Sense Organs, Sapienza University of Rome, Rome, Italy
| | - Dalila Roccamatisi
- Psychology Department, Università Telematica Internazionale Uninettuno (UTIU), Rome, Italy
| | - Alfonso Scarpa
- Department of Otolaryngology, University of Salerno, Salerno, Italy
| | - Antonio Della Volpe
- Otology and Cochlear Implant Unit, Santobono-Pausilipon Hospital of Naples, Naples, Italy
| | | | - Giampietro Ricci
- Otolaryngology Department, University of Perugia, Perugia, Italy
| | - Antonio Greco
- Department of Sense Organs, Sapienza University of Rome, Rome, Italy
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22
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Hribar M, Šuput D, Battelino S, Vovk A. Review article: Structural brain alterations in prelingually deaf. Neuroimage 2020; 220:117042. [PMID: 32534128 DOI: 10.1016/j.neuroimage.2020.117042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 05/14/2020] [Accepted: 06/06/2020] [Indexed: 11/20/2022] Open
Abstract
Functional studies show that our brain has a remarkable ability to reorganize itself in the absence of one or more sensory modalities. In this review, we gathered all the available articles investigating structural alterations in congenitally deaf subjects. Some concentrated only on specific regions of interest (e.g., auditory areas), while others examined the whole brain. The majority of structural alterations were observed in the auditory white matter and were more pronounced in the right hemisphere. A decreased white matter volume or fractional anisotropy in the auditory areas were the most common findings in congenitally deaf subjects. Only a few studies observed alterations in the auditory grey matter. Preservation of the grey matter might be due to the cross-modal plasticity as well as due to the lack of sensitivity of methods used for microstructural alterations of grey matter. Structural alterations were also observed in the frontal, visual, and other cerebral regions as well as in the cerebellum. The observed structural brain alterations in the deaf can probably be attributed mainly to the cross-modal plasticity in the absence of sound input and use of sign instead of spoken language.
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Affiliation(s)
- Manja Hribar
- Center for Clinical Physiology, Faculty of Medicine, University of Ljubljana, Slovenia; Clinic for Otorhinolaryngology and Cervicofacial Surgery, University Medical Centre Ljubljana, Slovenia; Department of Otorhinolaryngology, Faculty of Medicine, University of Ljubljana, Slovenia
| | - Dušan Šuput
- Center for Clinical Physiology, Faculty of Medicine, University of Ljubljana, Slovenia; Institute of Pathophysiology, Faculty of Medicine, University of Ljubljana, Slovenia
| | - Saba Battelino
- Clinic for Otorhinolaryngology and Cervicofacial Surgery, University Medical Centre Ljubljana, Slovenia; Department of Otorhinolaryngology, Faculty of Medicine, University of Ljubljana, Slovenia
| | - Andrej Vovk
- Center for Clinical Physiology, Faculty of Medicine, University of Ljubljana, Slovenia; Institute of Pathophysiology, Faculty of Medicine, University of Ljubljana, Slovenia.
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23
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Sun Z, Seo JW, Park HJ, Lee JY, Kwak MY, Kim Y, Lee JY, Park JW, Kang WS, Ahn JH, Chung JW, Kim H. Cortical reorganization following auditory deprivation predicts cochlear implant performance in postlingually deaf adults. Hum Brain Mapp 2020; 42:233-244. [PMID: 33022826 PMCID: PMC7721232 DOI: 10.1002/hbm.25219] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 07/23/2020] [Accepted: 08/04/2020] [Indexed: 12/29/2022] Open
Abstract
Long‐term hearing loss in postlingually deaf (PD) adults may lead to brain structural changes that affect the outcomes of cochlear implantation. We studied 94 PD patients who underwent cochlear implantation and 37 patients who were MRI‐scanned within 2 weeks after the onset of sudden hearing loss and expected with minimal brain structural changes in relation to deafness. Compared with those with sudden hearing loss, we found lower gray matter (GM) probabilities in bilateral thalami, superior, middle, inferior temporal cortices as well as the central cortical regions corresponding to the movement and sensation of the lips, tongue, and larynx in the PD group. Among these brain areas, the GM in the middle temporal cortex showed negative correlation with disease duration, whereas the other areas displayed positive correlations. Left superior, middle temporal cortical, and bilateral thalamic GMs were the most accurate predictors of post‐cochlear implantation word recognition scores (mean absolute error [MAE] = 10.1, r = .82), which was superior to clinical variables used (MAE: 12.1, p < .05). Using the combined brain morphological and clinical features, we achieved the best prediction of the outcome (MAE: 8.51, r = .90). Our findings suggest that the cross‐modal plasticity allowing the superior temporal cortex and thalamus to process other modal sensory inputs reverses the initially lower volume when deafness becomes persistent. The middle temporal cortex processing higher‐level language comprehension shows persistent negative correlations with disease duration, suggesting this area's association with degraded speech comprehensions due to long‐term deafness. Morphological features combined with clinical variables might play a key role in predicting outcomes of cochlear implantation.
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Affiliation(s)
- Zhe Sun
- USC Stevens Neuroimaging and Informatics Institute, Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Ji Won Seo
- Department of Otorhinolaryngology-Head and Neck Surgery, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, South Korea
| | - Hong Ju Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Jee Yeon Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Min Young Kwak
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Yehree Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Je Yeon Lee
- Department of Otorhinolaryngology, Inje University Sanggye Paik Hospital, Seoul, South Korea
| | - Jun Woo Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Woo Seok Kang
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Joong Ho Ahn
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Jong Woo Chung
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Hosung Kim
- USC Stevens Neuroimaging and Informatics Institute, Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
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24
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Ratnanather JT. Structural neuroimaging of the altered brain stemming from pediatric and adolescent hearing loss-Scientific and clinical challenges. WILEY INTERDISCIPLINARY REVIEWS-SYSTEMS BIOLOGY AND MEDICINE 2019; 12:e1469. [PMID: 31802640 DOI: 10.1002/wsbm.1469] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 10/01/2019] [Accepted: 10/13/2019] [Indexed: 12/20/2022]
Abstract
There has been a spurt in structural neuroimaging studies of the effect of hearing loss on the brain. Specifically, magnetic resonance imaging (MRI) and diffusion tensor imaging (DTI) technologies provide an opportunity to quantify changes in gray and white matter structures at the macroscopic scale. To date, there have been 32 MRI and 23 DTI studies that have analyzed structural differences accruing from pre- or peri-lingual pediatric hearing loss with congenital or early onset etiology and postlingual hearing loss in pre-to-late adolescence. Additionally, there have been 15 prospective clinical structural neuroimaging studies of children and adolescents being evaluated for cochlear implants. The results of the 70 studies are summarized in two figures and three tables. Plastic changes in the brain are seen to be multifocal rather than diffuse, that is, differences are consistent across regions implicated in the hearing, speech and language networks regardless of modes of communication and amplification. Structures in that play an important role in cognition are affected to a lesser extent. A limitation of these studies is the emphasis on volumetric measures and on homogeneous groups of subjects with hearing loss. It is suggested that additional measures of morphometry and connectivity could contribute to a greater understanding of the effect of hearing loss on the brain. Then an interpretation of the observed macroscopic structural differences is given. This is followed by discussion of how structural imaging can be combined with functional imaging to provide biomarkers for longitudinal tracking of amplification. This article is categorized under: Developmental Biology > Developmental Processes in Health and Disease Translational, Genomic, and Systems Medicine > Translational Medicine Laboratory Methods and Technologies > Imaging.
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Affiliation(s)
- J Tilak Ratnanather
- Center for Imaging Science, Johns Hopkins University, Baltimore, Maryland.,Institute for Computational Medicine, Johns Hopkins University, Baltimore, Maryland.,Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland
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