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Carroll AM, Riley JR, Borland MS, Danaphongse TT, Hays SA, Kilgard MP, Engineer CT. Bursts of vagus nerve stimulation paired with auditory rehabilitation fail to improve speech sound perception in rats with hearing loss. iScience 2024; 27:109527. [PMID: 38585658 PMCID: PMC10995867 DOI: 10.1016/j.isci.2024.109527] [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: 05/08/2023] [Revised: 09/09/2023] [Accepted: 03/15/2024] [Indexed: 04/09/2024] Open
Abstract
Hearing loss can lead to long-lasting effects on the central nervous system, and current therapies, such as auditory training and rehabilitation, show mixed success in improving perception and speech comprehension. Vagus nerve stimulation (VNS) is an adjunctive therapy that can be paired with rehabilitation to facilitate behavioral recovery after neural injury. However, VNS for auditory recovery has not been tested after severe hearing loss or significant damage to peripheral receptors. This study investigated the utility of pairing VNS with passive or active auditory rehabilitation in a rat model of noise-induced hearing loss. Although auditory rehabilitation helped rats improve their frequency discrimination, learn novel speech discrimination tasks, and achieve speech-in-noise performance similar to normal hearing controls, VNS did not enhance recovery of speech sound perception. These results highlight the limitations of VNS as an adjunctive therapy for hearing loss rehabilitation and suggest that optimal benefits from neuromodulation may require restored peripheral signaling.
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Affiliation(s)
- Alan M. Carroll
- The University of Texas at Dallas, Texas Biomedical Device Center, 800 West Campbell Road, Richardson, TX 75080-3021, USA
- Department of Neuroscience, School of Behavioral and Brain Sciences, The University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080-3021, USA
| | - Jonathan R. Riley
- The University of Texas at Dallas, Texas Biomedical Device Center, 800 West Campbell Road, Richardson, TX 75080-3021, USA
- Department of Neuroscience, School of Behavioral and Brain Sciences, The University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080-3021, USA
| | - Michael S. Borland
- The University of Texas at Dallas, Texas Biomedical Device Center, 800 West Campbell Road, Richardson, TX 75080-3021, USA
| | - Tanya T. Danaphongse
- The University of Texas at Dallas, Texas Biomedical Device Center, 800 West Campbell Road, Richardson, TX 75080-3021, USA
| | - Seth A. Hays
- The University of Texas at Dallas, Texas Biomedical Device Center, 800 West Campbell Road, Richardson, TX 75080-3021, USA
- Department of Bioengineering, Erik Jonsson School of Engineering and Computer Science, The University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080-3021, USA
| | - Michael P. Kilgard
- The University of Texas at Dallas, Texas Biomedical Device Center, 800 West Campbell Road, Richardson, TX 75080-3021, USA
- Department of Neuroscience, School of Behavioral and Brain Sciences, The University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080-3021, USA
| | - Crystal T. Engineer
- The University of Texas at Dallas, Texas Biomedical Device Center, 800 West Campbell Road, Richardson, TX 75080-3021, USA
- Department of Neuroscience, School of Behavioral and Brain Sciences, The University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080-3021, USA
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Momtaz S, Bidelman GM. Effects of Stimulus Rate and Periodicity on Auditory Cortical Entrainment to Continuous Sounds. eNeuro 2024; 11:ENEURO.0027-23.2024. [PMID: 38253583 PMCID: PMC10913036 DOI: 10.1523/eneuro.0027-23.2024] [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] [Received: 01/23/2023] [Revised: 01/14/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
The neural mechanisms underlying the exogenous coding and neural entrainment to repetitive auditory stimuli have seen a recent surge of interest. However, few studies have characterized how parametric changes in stimulus presentation alter entrained responses. We examined the degree to which the brain entrains to repeated speech (i.e., /ba/) and nonspeech (i.e., click) sounds using phase-locking value (PLV) analysis applied to multichannel human electroencephalogram (EEG) data. Passive cortico-acoustic tracking was investigated in N = 24 normal young adults utilizing EEG source analyses that isolated neural activity stemming from both auditory temporal cortices. We parametrically manipulated the rate and periodicity of repetitive, continuous speech and click stimuli to investigate how speed and jitter in ongoing sound streams affect oscillatory entrainment. Neuronal synchronization to speech was enhanced at 4.5 Hz (the putative universal rate of speech) and showed a differential pattern to that of clicks, particularly at higher rates. PLV to speech decreased with increasing jitter but remained superior to clicks. Surprisingly, PLV entrainment to clicks was invariant to periodicity manipulations. Our findings provide evidence that the brain's neural entrainment to complex sounds is enhanced and more sensitized when processing speech-like stimuli, even at the syllable level, relative to nonspeech sounds. The fact that this specialization is apparent even under passive listening suggests a priority of the auditory system for synchronizing to behaviorally relevant signals.
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Affiliation(s)
- Sara Momtaz
- School of Communication Sciences & Disorders, University of Memphis, Memphis, Tennessee 38152
- Boys Town National Research Hospital, Boys Town, Nebraska 68131
| | - Gavin M Bidelman
- Department of Speech, Language and Hearing Sciences, Indiana University, Bloomington, Indiana 47408
- Program in Neuroscience, Indiana University, Bloomington, Indiana 47405
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Barros ACMPD, Lopes RV, Gil D, Carmo ACFD, Onishi ET, Branco-Barreiro FCA. Auditory training for tinnitus treatment: a scoping review. Braz J Otorhinolaryngol 2024; 90:101361. [PMID: 38006725 PMCID: PMC10709205 DOI: 10.1016/j.bjorl.2023.101361] [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: 08/30/2023] [Accepted: 11/05/2023] [Indexed: 11/27/2023] Open
Abstract
OBJECTIVES Our study aimed to verify the evidence of auditory training employed in the audiological treatment of tinnitus in adults and older adults. METHODS Scoping review based on a search for articles in journals available in MEDLINE (PubMed), Embase (Elsevier), LILACS (BVS), and Cochrane Library. Titles and abstracts of the retrieved articles were assessed by peers, following the eligibility criteria; they were afterward read in full text, and the references were hand searched in the results found. Studies' level of evidence was classified into very high (Level A+), high (Level A), moderate (Level B), limited (Level C), low (Level D), or very low (Level D-) based on the Critically Appraised Topics. RESULTS 2160 records were identified in the searching stage and 15 studies were eligible for data extraction. Study design, sample characterization, auditory training tasks, sound stimuli, outcome measures, and results were extracted. Frequency discrimination training was the most frequent strategy, followed by auditory attentional skills training and multisensory training. Almost all studies with daily auditory training sessions reported significant benefits demonstrated in at least one outcome measure. Studies that used auditory discrimination training and attentional auditory skill stimulation to treat tinnitus obtained quality evidence levels ranging from limited to high (C‒A) and studies that applied multisensory training or attentional training combined with counseling and passive listening in tinnitus patients reached a high-quality evidence level (A). CONCLUSION Recent studies had higher levels of evidence and considered attentional factors and multisensory pathways in auditory training strategies.
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Affiliation(s)
| | - Rhayane Vitória Lopes
- Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Fonoaudiologia, São Paulo, SP, Brazil
| | - Daniela Gil
- Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Fonoaudiologia, São Paulo, SP, Brazil
| | | | - Ektor Tsuneo Onishi
- Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Clínica de Zumbido - Departamento de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, São Paulo, SP, Brazil.
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Zueva MV, Neroeva NV, Zhuravleva AN, Bogolepova AN, Kotelin VV, Fadeev DV, Tsapenko IV. Fractal Phototherapy in Maximizing Retina and Brain Plasticity. ADVANCES IN NEUROBIOLOGY 2024; 36:585-637. [PMID: 38468055 DOI: 10.1007/978-3-031-47606-8_31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
The neuroplasticity potential is reduced with aging and impairs during neurodegenerative diseases and brain and visual system injuries. This limits the brain's capacity to repair the structure and dynamics of its activity after lesions. Maximization of neuroplasticity is necessary to provide the maximal CNS response to therapeutic intervention and adaptive reorganization of neuronal networks in patients with degenerative pathology and traumatic injury to restore the functional activity of the brain and retina.Considering the fractal geometry and dynamics of the healthy brain and the loss of fractality in neurodegenerative pathology, we suggest that the application of self-similar visual signals with a fractal temporal structure in the stimulation therapy can reactivate the adaptive neuroplasticity and enhance the effectiveness of neurorehabilitation. This proposition was tested in the recent studies. Patients with glaucoma had a statistically significant positive effect of fractal photic therapy on light sensitivity and the perimetric MD index, which shows that methods of fractal stimulation can be a novel nonpharmacological approach to neuroprotective therapy and neurorehabilitation. In healthy rabbits, it was demonstrated that a long-term course of photostimulation with fractal signals does not harm the electroretinogram (ERG) and retina structure. Rabbits with modeled retinal atrophy showed better dynamics of the ERG restoration during daily stimulation therapy for a week in comparison with the controls. Positive changes in the retinal function can indirectly suggest the activation of its adaptive plasticity and the high potential of stimulation therapy with fractal visual stimuli in a nonpharmacological neurorehabilitation, which requires further study.
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Affiliation(s)
- Marina V Zueva
- Department of Clinical Physiology of Vision, Helmholtz National Medical Research Center of Eye Diseases, Moscow, Russia
| | - Natalia V Neroeva
- Department of Pathology of the Retina and Optic Nerve, Helmholtz National Medical Research Center of Eye Diseases, Moscow, Russia
| | - Anastasia N Zhuravleva
- Department of Glaucoma, Helmholtz National Medical Research Center of Eye Diseases, Moscow, Russia
| | - Anna N Bogolepova
- Department of neurology, neurosurgery and medical genetics, Pirogov Russian National Research Medical University, Moscow, Russia
| | - Vladislav V Kotelin
- Department of Clinical Physiology of Vision, Helmholtz National Medical Research Center of Eye Diseases, Moscow, Russia
| | - Denis V Fadeev
- Scientific Experimental Center Department, Helmholtz National Medical Research Center of Eye Diseases, Moscow, Russia
| | - Irina V Tsapenko
- Department of Clinical Physiology of Vision, Helmholtz National Medical Research Center of Eye Diseases, Moscow, Russia
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Heliopoulos A, Moroe N. Hearing aid trial periods: Audiologists' thoughts and practices in South Africa. PLOS GLOBAL PUBLIC HEALTH 2023; 3:e0002552. [PMID: 37922231 PMCID: PMC10624272 DOI: 10.1371/journal.pgph.0002552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 10/02/2023] [Indexed: 11/05/2023]
Abstract
The process of adjusting and becoming accustomed to hearing aids may be best facilitated by providing a hearing aid trial period. Globally, there are no standardised frameworks or regulations on the recommended hearing aid trial period. The main purpose of this study was to explore audiologists' hearing aid trialing practices. A cross sectional study employed a quantitative, descriptive design to formulate the study. Ninety-five audiologists' were recruited by means of a purposive sampling strategy. Data were collected through the use of an online survey via Google forms. A pilot study was conducted prior to the commencement of the main study in order to ensure reliability of the main study. The results indicated that two weeks was the most recommended duration of a trial period from audiologists'. Majority of audiologists' (72.63%) offer hearing aid trials to their patients. Most audiologists' who offer hearing aid trials choose to trial their patients with two different hearing aids. Findings revealed a need for trialing periods to become standard practice by audiologists' when fitting hearing aids. Not enough audiologists' are providing this service.
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Affiliation(s)
- Angie Heliopoulos
- Department of Speech Pathology and Audiology, University of the Witwatersrand, Johannesburg, South Africa
| | - Nomfundo Moroe
- Department of Speech Pathology and Audiology, University of the Witwatersrand, Johannesburg, South Africa
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Studer-Luethi B, Boesch V, Lusti S, Meier B. Fostering cognitive performance in older adults with a process- and a strategy-based cognitive training. NEUROPSYCHOLOGY, DEVELOPMENT, AND COGNITION. SECTION B, AGING, NEUROPSYCHOLOGY AND COGNITION 2023; 30:837-859. [PMID: 35912438 DOI: 10.1080/13825585.2022.2105298] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
The present study investigates the impact of process-based and strategy-based cognitive training to boost performance in healthy older adults. Three groups trained with either a dichotic listening training (process-based training, n = 25), an implementation intention strategy training (strategy-based training, n = 23), or served as a non-contact control group (n = 30). Our results demonstrated that training participants improved their performance in the trained tasks (process-based training: d = 3.01, strategy-based training: d = 2.6). For untrained tasks, the process-based training group showed significant working memory (d = .58) as well as episodic memory task improvement (d = 1.19) compared to the strategy-based training and to the non-contact control group (all d < .03). In contrast, in the strategy-based training group there was a tendency towards some performance gain in a fluid intelligence test (d = .92). These results indicate that cognitive training can be tailored to improve specific cognitive abilities.
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Affiliation(s)
| | - Valérie Boesch
- Institute for Psychology, University of Bern, Bern, Switzerland
| | | | - Beat Meier
- Institute for Psychology, University of Bern, Bern, Switzerland
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Madhukesh S, Gundmi A, K S H, Ramesh P, Jacob R. Assessing the Development and Viability of an Android App for Auditory Training in Older Adults with Hearing Impairments. Indian J Otolaryngol Head Neck Surg 2023; 75:1876-1883. [PMID: 37636618 PMCID: PMC10447351 DOI: 10.1007/s12070-023-03696-3] [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: 11/22/2022] [Accepted: 03/13/2023] [Indexed: 08/29/2023] Open
Abstract
Purpose: This study aims to develop an android application that is more compatible and user-friendly for the older adult population with hearing impairment and validate the developed app. Method: The app's framework involved a training mode platform consisting of four levels with four sub-levels each. Every level includes stimuli of word-in-noise containing high and low-frequency words with three different noise types - traffic noise, competing for speech, and speech babble. The levels in the app increased in complexity to provide an efficient auditory training feature. The developed application was validated on older adults and professionals based on a questionnaire with both closed and open-ended questions. Results: Based on the validated responses of the participants, the app is a reliable tool for auditory training in older adults with hearing impairment. The app contains ease-of-use features for older adults and has been considered a platform for improvement in aural rehabilitation. Conclusion: The study marks as a tool in auditory training for older adults to provide the utmost benefit. Increase in the cases of the hearing-impaired population in a few years, a demand to set up a user-friendly management option is beneficiDigitizationtion of aural rehabilitation, especially for older adults, has thus been noted in the present study.
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Affiliation(s)
- Sanjana Madhukesh
- Department of Speech and Hearing, Manipal College of Health Professions (MCHP), Manipal Academy of Higher Education , Manipal, India
| | - Archana Gundmi
- Department of Speech and Hearing, Manipal College of Health Professions (MCHP), Manipal Academy of Higher Education , Manipal, India
| | - Harisha K S
- Department of Computer Applications, Manipal Institute of Technology, MAHE, Manipal, India
| | - Pramath Ramesh
- Department of Computer Applications, Manipal Institute of Technology, MAHE, Manipal, India
| | - Roshan Jacob
- Department of Computer Applications, Manipal Institute of Technology, MAHE, Manipal, India
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Tepe V, Guillory L, Boudin-George A, Cantelmo T, Murphy S. Central Auditory Processing Dysfunction in Service Members and Veterans: Treatment Considerations and Strategies. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2023:1-28. [PMID: 37379242 DOI: 10.1044/2023_jslhr-23-00095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/30/2023]
Abstract
PURPOSE Military risk factors such as blast exposure, noise exposure, head trauma, and neurotoxin exposure place Service members and Veterans at risk for deficits associated with auditory processing dysfunction. However, there is no clinical guidance specific to the treatment of auditory processing deficits in this unique population. We provide an overview of available treatments and their limited supporting evidence for use in adults, emphasizing the need for multidisciplinary case management and interdisciplinary research to support evidence-based solutions. METHOD We explored relevant literature to inform the treatment of auditory processing dysfunction in adults, with emphasis on findings involving active or former military personnel. We were able to identify a limited number of studies, pertaining primarily to the treatment of auditory processing deficits through the use of assistive technologies and training strategies. We assessed the current state of the science for knowledge gaps that warrant additional study. CONCLUSIONS Auditory processing deficits often co-occur with other military injuries and may pose significant risk in military operational and occupational settings. Research is needed to advance clinical diagnostic and rehabilitative capabilities, guide treatment planning, support effective multidisciplinary management, and inform fitness-for-duty standards. We emphasize the need for an inclusive approach to the assessment and treatment of auditory processing concerns in Service members and Veterans and for evidence-based solutions to address complex military risk factors and injuries.
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Affiliation(s)
- Victoria Tepe
- Department of Defense Hearing Center of Excellence, JBSA Lackland, TX
- The Geneva Foundation, Tacoma, WA
| | - Lisa Guillory
- Harry S. Truman Memorial Veterans' Hospital, Columbia, MO
| | - Amy Boudin-George
- Department of Defense Hearing Center of Excellence, JBSA Lackland, TX
| | - Tasha Cantelmo
- Alexander T. Augusta Military Medical Center, Fort Belvoir, VA
| | - Sara Murphy
- Department of Defense Hearing Center of Excellence, JBSA Lackland, TX
- The Geneva Foundation, Tacoma, WA
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Beckers L, Tromp N, Philips B, Mylanus E, Huinck W. Exploring neurocognitive factors and brain activation in adult cochlear implant recipients associated with speech perception outcomes-A scoping review. Front Neurosci 2023; 17:1046669. [PMID: 36816114 PMCID: PMC9932917 DOI: 10.3389/fnins.2023.1046669] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 01/05/2023] [Indexed: 02/05/2023] Open
Abstract
Background Cochlear implants (CIs) are considered an effective treatment for severe-to-profound sensorineural hearing loss. However, speech perception outcomes are highly variable among adult CI recipients. Top-down neurocognitive factors have been hypothesized to contribute to this variation that is currently only partly explained by biological and audiological factors. Studies investigating this, use varying methods and observe varying outcomes, and their relevance has yet to be evaluated in a review. Gathering and structuring this evidence in this scoping review provides a clear overview of where this research line currently stands, with the aim of guiding future research. Objective To understand to which extent different neurocognitive factors influence speech perception in adult CI users with a postlingual onset of hearing loss, by systematically reviewing the literature. Methods A systematic scoping review was performed according to the PRISMA guidelines. Studies investigating the influence of one or more neurocognitive factors on speech perception post-implantation were included. Word and sentence perception in quiet and noise were included as speech perception outcome metrics and six key neurocognitive domains, as defined by the DSM-5, were covered during the literature search (Protocol in open science registries: 10.17605/OSF.IO/Z3G7W of searches in June 2020, April 2022). Results From 5,668 retrieved articles, 54 articles were included and grouped into three categories using different measures to relate to speech perception outcomes: (1) Nineteen studies investigating brain activation, (2) Thirty-one investigating performance on cognitive tests, and (3) Eighteen investigating linguistic skills. Conclusion The use of cognitive functions, recruiting the frontal cortex, the use of visual cues, recruiting the occipital cortex, and the temporal cortex still available for language processing, are beneficial for adult CI users. Cognitive assessments indicate that performance on non-verbal intelligence tasks positively correlated with speech perception outcomes. Performance on auditory or visual working memory, learning, memory and vocabulary tasks were unrelated to speech perception outcomes and performance on the Stroop task not to word perception in quiet. However, there are still many uncertainties regarding the explanation of inconsistent results between papers and more comprehensive studies are needed e.g., including different assessment times, or combining neuroimaging and behavioral measures. Systematic review registration https://doi.org/10.17605/OSF.IO/Z3G7W.
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Affiliation(s)
- Loes Beckers
- Cochlear Ltd., Mechelen, Belgium,Department of Otorhinolaryngology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands,*Correspondence: Loes Beckers,
| | - Nikki Tromp
- Cochlear Ltd., Mechelen, Belgium,Department of Otorhinolaryngology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
| | | | - Emmanuel Mylanus
- Department of Otorhinolaryngology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
| | - Wendy Huinck
- Department of Otorhinolaryngology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
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Schumann A, Ross B. Adaptive Syllable Training Improves Phoneme Identification in Older Listeners with and without Hearing Loss. Audiol Res 2022; 12:653-673. [PMID: 36412658 PMCID: PMC9680330 DOI: 10.3390/audiolres12060063] [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: 09/02/2022] [Revised: 11/02/2022] [Accepted: 11/13/2022] [Indexed: 11/22/2022] Open
Abstract
Acoustic-phonetic speech training mitigates confusion between consonants and improves phoneme identification in noise. A novel training paradigm addressed two principles of perceptual learning. First, training benefits are often specific to the trained material; therefore, stimulus variability was reduced by training small sets of phonetically similar consonant-vowel-consonant syllables. Second, the training is most efficient at an optimal difficulty level; accordingly, the noise level was adapted to the participant's competency. Fifty-two adults aged between sixty and ninety years with normal hearing or moderate hearing loss participated in five training sessions within two weeks. Training sets of phonetically similar syllables contained voiced and voiceless stop and fricative consonants, as well as voiced nasals and liquids. Listeners identified consonants at the onset or the coda syllable position by matching the syllables with their orthographic equivalent within a closed set of three alternative symbols. The noise level was adjusted in a staircase procedure. Pre-post-training benefits were quantified as increased accuracy and a decrease in the required signal-to-noise ratio (SNR) and analyzed with regard to the stimulus sets and the participant's hearing abilities. The adaptive training was feasible for older adults with various degrees of hearing loss. Normal-hearing listeners performed with high accuracy at lower SNR after the training. Participants with hearing loss improved consonant accuracy but still required a high SNR. Phoneme identification improved for all stimulus sets. However, syllables within a set required noticeably different SNRs. Most significant gains occurred for voiced and voiceless stop and (af)fricative consonants. The training was beneficial for difficult consonants, but the easiest to identify consonants improved most prominently. The training enabled older listeners with different capabilities to train and improve at an individual 'edge of competence'.
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Affiliation(s)
- Annette Schumann
- Rotman Research Institute, Baycrest Centre for Geriatric Care, Toronto, ON M6A 2E1, Canada
| | - Bernhard Ross
- Rotman Research Institute, Baycrest Centre for Geriatric Care, Toronto, ON M6A 2E1, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, ON M5G 1L7, Canada
- Correspondence: ; Tel.: +1-416-785-2500 (ext. 2690)
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Benítez-Barrera CR, Skoe E, Huang J, Tharpe AM. Evidence for a Musician Speech-Perception-in-Noise Advantage in School-Age Children. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2022; 65:3996-4008. [PMID: 36194893 DOI: 10.1044/2022_jslhr-22-00134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
PURPOSE The objective of this study was to evaluate whether child musicians are better at listening to speech in noise (SPIN) than nonmusicians of the same age. In addition, we aimed to explore whether the musician SPIN advantage in children was related to general intelligence (IQ). METHOD Fifty-one children aged 8.2-11.8 years and with different levels of music training participated in the study. A between-group design and correlational analyses were used to determine differences in SPIN skills as they relate to music training. IQ was used as a covariate to explore the relationship between intelligence and SPIN ability. RESULTS More years of music training were associated with better SPIN skills than fewer years of music training. Furthermore, this difference in SPIN skills remained even when accounting for IQ. These results were found at the group level and also when years of instrument training was treated as a continuous variable (i.e., correlational analyses). CONCLUSIONS We confirmed results from previous studies in which child musicians outperformed nonmusicians in SPIN skills. We also showed that this effect was not related to differences in IQ between the musicians and nonmusicians for this cohort of children. However, confirmation of this finding with a cohort of children from more diverse socioeconomic statuses and cognitive profiles is warranted.
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Affiliation(s)
| | | | | | - Anne Marie Tharpe
- Vanderbilt University, Nashville, TN
- Vanderbilt University Medical Center, Nashville, TN
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Smith S. Translational Applications of Machine Learning in Auditory Electrophysiology. Semin Hear 2022; 43:240-250. [PMID: 36313047 PMCID: PMC9605807 DOI: 10.1055/s-0042-1756166] [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] [Indexed: 11/07/2022] Open
Abstract
Machine learning (ML) is transforming nearly every aspect of modern life including medicine and its subfields, such as hearing science. This article presents a brief conceptual overview of selected ML approaches and describes how these techniques are being applied to outstanding problems in hearing science, with a particular focus on auditory evoked potentials (AEPs). Two vignettes are presented in which ML is used to analyze subcortical AEP data. The first vignette demonstrates how ML can be used to determine if auditory learning has influenced auditory neurophysiologic function. The second vignette demonstrates how ML analysis of AEPs may be useful in determining whether hearing devices are optimized for discriminating speech sounds.
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Affiliation(s)
- Spencer Smith
- Department of Speech, Language, and Hearing Sciences, University of Texas at Austin, Austin, Texas
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Karah H, Karawani H. Auditory Perceptual Exercises in Adults Adapting to the Use of Hearing Aids. Front Psychol 2022; 13:832100. [PMID: 35664209 PMCID: PMC9158114 DOI: 10.3389/fpsyg.2022.832100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 04/26/2022] [Indexed: 12/30/2022] Open
Abstract
Older adults with age-related hearing loss often use hearing aids (HAs) to compensate. However, certain challenges in speech perception, especially in noise still exist, despite today's HA technology. The current study presents an evaluation of a home-based auditory exercises program that can be used during the adaptation process for HA use. The home-based program was developed at a time when telemedicine became prominent in part due to the COVID-19 pandemic. The study included 53 older adults with age-related symmetrical sensorineural hearing loss. They were divided into three groups depending on their experience using HAs. Group 1: Experienced users (participants who used bilateral HAs for at least 2 years). Group 2: New users (participants who were fitted with bilateral HAs for the first time). Group 3: Non-users. These three groups underwent auditory exercises for 3 weeks. The auditory tasks included auditory detection, auditory discrimination, and auditory identification, as well as comprehension with basic (syllables) and more complex (sentences) stimuli, presented in quiet and in noisy listening conditions. All participants completed self-assessment questionnaires before and after the auditory exercises program and underwent a cognitive test at the end. Self-assessed improvements in hearing ability were observed across the HA users groups, with significant changes described by new users. Overall, speech perception in noise was poorer than in quiet. Speech perception accuracy was poorer in the non-users group compared to the users in all tasks. In sessions where stimuli were presented in quiet, similar performance was observed among new and experienced uses. New users performed significantly better than non-users in all speech in noise tasks; however, compared to the experienced users, performance differences depended on task difficulty. The findings indicate that HA users, even new users, had better perceptual performance than their peers who did not receive hearing aids.
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Affiliation(s)
| | - Hanin Karawani
- Department of Communication Sciences and Disorders, Faculty of Social Welfare and Health Sciences, University of Haifa, Haifa, Israel
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14
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Rumschlag JA, Razak KA. Age-related changes in event related potentials, steady state responses and temporal processing in the auditory cortex of mice with severe or mild hearing loss. Hear Res 2021; 412:108380. [PMID: 34758398 DOI: 10.1016/j.heares.2021.108380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 08/19/2021] [Accepted: 10/19/2021] [Indexed: 12/20/2022]
Abstract
Age-related changes in auditory processing affect the quality of life of older adults with and without hearing loss. To distinguish between the effects of sensorineural hearing loss and aging on cortical processing, the main goal of the present study was to compare cortical responses using the same stimulus paradigms and recording conditions in two strains of mice (C57BL/6J and FVB) that differ in the degree of age-related hearing loss. Electroencephalogram (EEG) recordings were obtained from freely moving young and old mice using epidural screw electrodes. We measured event related potentials (ERP) and 40 Hz auditory steady-state responses (ASSR). We used a novel stimulus, termed the gap-ASSR stimulus, which elicits an ASSR by rapidly presenting short gaps in continuous noise. By varying the gap widths and modulation depths, we probed the limits of temporal processing in young and old mice. Temporal fidelity of ASSR and gap-ASSR responses were measured as phase consistency across trials (inter-trial phase clustering; ITPC). The old C57 mice, which show severe hearing loss, produced larger ERP amplitudes compared to young mice. Despite robust ERPs, the old C57 mice showed significantly diminished ITPC in the ASSR and gap-ASSR responses, even with 100% modulation depth. The FVB mice, which show mild hearing loss with age, generated similar ERP amplitudes and ASSR ITPC across the age groups tested. However, the old FVB mice showed decreased gap-ASSR responses compared to young mice, particularly for modulation depths <100%. The C57 mice data suggest that severe presbycusis leads to increased gain in the auditory cortex, but with reduced temporal fidelity. The FVB mice data suggest that with mild hearing loss, age-related changes in temporal processing become apparent only when tested with more challenging sounds (shorter gaps and shallower modulation).
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Affiliation(s)
| | - Khaleel A Razak
- Graduate Neuroscience Program, Riverside, United States; Psychology Department, University of California, Riverside, United States.
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15
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Bieber RE, Gordon-Salant S. Improving older adults' understanding of challenging speech: Auditory training, rapid adaptation and perceptual learning. Hear Res 2021; 402:108054. [PMID: 32826108 PMCID: PMC7880302 DOI: 10.1016/j.heares.2020.108054] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 07/21/2020] [Accepted: 08/02/2020] [Indexed: 12/13/2022]
Abstract
The literature surrounding auditory perceptual learning and auditory training for challenging speech signals in older adult listeners is highly varied, in terms of both study methodology and reported outcomes. In this review, we discuss some of the pertinent features of listener, stimulus, and training protocol. Literature regarding the elicitation of auditory perceptual learning for time-compressed speech, non-native speech, and noise-vocoded speech is reviewed, as are auditory training protocols designed to improve speech-in-noise recognition. The literature is synthesized to establish some over-arching findings for the aging population, including an intact capacity for auditory perceptual learning, but a limited transfer of learning to untrained stimuli.
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Affiliation(s)
- Rebecca E Bieber
- Department of Hearing and Speech Sciences, University of Maryland, 0100 LeFrak Hall, 7251 Preinkert Drive, College Park, MD 20742, United States.
| | - Sandra Gordon-Salant
- Department of Hearing and Speech Sciences, University of Maryland, 0100 LeFrak Hall, 7251 Preinkert Drive, College Park, MD 20742, United States
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16
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Völter C, Stöckmann C, Schirmer C, Dazert S. Tablet-Based Telerehabilitation Versus Conventional Face-to-Face Rehabilitation After Cochlear Implantation: Prospective Intervention Pilot Study. JMIR Rehabil Assist Technol 2021; 8:e20405. [PMID: 33709934 PMCID: PMC8082947 DOI: 10.2196/20405] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 09/07/2020] [Accepted: 12/27/2020] [Indexed: 12/25/2022] Open
Abstract
Background Technologies allowing home-based rehabilitation may be a key means of saving financial resources while also facilitating people’s access to treatment. After cochlear implantation, auditory training is necessary for the brain to adapt to new auditory signals transmitted by the cochlear implant (CI). To date, auditory training is conducted in a face-to-face setting at a specialized center. However, because of the COVID-19 pandemic’s impact on health care, the need for new therapeutic settings has intensified. Objective The aims of this study are to assess the feasibility of a novel teletherapeutic auditory rehabilitation platform in adult CI recipients and compare the clinical outcomes and economic benefits of this platform with those derived from conventional face-to-face rehabilitation settings in a clinic. Methods In total, 20 experienced adult CI users with a mean age of 59.4 (SD 16.3) years participated in the study. They completed 3 weeks of standard (face-to-face) therapy, followed by 3 weeks of computer-based auditory training (CBAT) at home. Participants were assessed at three intervals: before face-to-face therapy, after face-to-face therapy, and after CBAT. The primary outcomes were speech understanding in quiet and noisy conditions. The secondary outcomes were the usability of the CBAT system, the participants’ subjective rating of their own listening abilities, and the time required for completing face-to-face and CBAT sessions for CI users and therapists. Results Greater benefits were observed after CBAT than after standard therapy in nearly all speech outcome measures. Significant improvements were found in sentence comprehension in noise (P=.004), speech tracking (P=.004) and phoneme differentiation (vowels: P=.001; consonants: P=.02) after CBAT. Only speech tracking improved significantly after conventional therapy (P=.007). The program’s usability was judged to be high: only 2 of 20 participants could not imagine using the program without support. The different features of the training platform were rated as high. Cost analysis showed a cost difference in favor of CBAT: therapists spent 120 minutes per week face-to-face and 30 minutes per week on computer-based sessions. For CI users, attending standard therapy required an average of approximately 78 (SD 58.6) minutes of travel time per appointment. Conclusions The proposed teletherapeutic approach for hearing rehabilitation enables good clinical outcomes while saving time for CI users and clinicians. The promising speech understanding results might be due to the high satisfaction of users with the CBAT program. Teletherapy might offer a cost-effective solution to address the lack of human resources in health care as well as the global challenge of current or future pandemics.
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Affiliation(s)
- Christiane Völter
- Department of Otorhinolaryngology, Head and Neck Surgery, Ruhr University Bochum, St Elisabeth Hospital, Bochum, Germany
| | - Carolin Stöckmann
- Department of Otorhinolaryngology, Head and Neck Surgery, Ruhr University Bochum, St Elisabeth Hospital, Bochum, Germany
| | - Christiane Schirmer
- Department of Otorhinolaryngology, Head and Neck Surgery, Ruhr University Bochum, St Elisabeth Hospital, Bochum, Germany.,Kampmann Hearing Aid Acoustics, Bochum, Germany
| | - Stefan Dazert
- Department of Otorhinolaryngology, Head and Neck Surgery, Ruhr University Bochum, St Elisabeth Hospital, Bochum, Germany
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Megha, Maruthy S. Effect of Hearing Aid Acclimatization on Speech-in-Noise Perception and Its Relationship With Changes in Auditory Long Latency Responses. Am J Audiol 2020; 29:774-784. [PMID: 32970453 DOI: 10.1044/2020_aja-19-00124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Objective The study attempted to track speech-in-noise perception and auditory long latency responses (ALLRs) over a period of hearing aid use in naïve hearing aid users. The primary aim was to investigate the relationship of change in speech-in-noise perception with the change in ALLRs. Method Thirty adults with mild-to-moderate sensorineural hearing loss (clinical group) and 17 adults with normal hearing (control group) in the age range of 23-60 years participated in the study. Syllable identification in noise (SIN) and ALLRs in noise were measured three times (three sessions) over a period of 2 months of hearing aid use. Results Results showed a significant increase in SIN and a decrease in the latency of ALLRs in the later sessions compared to the baseline session in the clinical group. However, the changes seen across the three sessions in the control group were not statistically significant. The magnitude of change in ALLRs seen in the clinical group did not significantly correlate with the change in SIN scores seen in them. Conclusions The study provides evidence for improvements in speech perception in noise and in processing time of auditory cortical areas with hearing aid acclimatization. However, it is important to note that the improvement in ALLRs does not assure improvement in speech perception in noise.
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Affiliation(s)
- Megha
- Department of Audiology, All IndiaInstitute of Speech and Hearing, Manasagangothri, Mysuru, Karnataka
| | - Sandeep Maruthy
- Department of Audiology, All IndiaInstitute of Speech and Hearing, Manasagangothri, Mysuru, Karnataka
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18
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Koerner TK, A. Papesh M, Gallun FJ. A Questionnaire Survey of Current Rehabilitation Practices for Adults With Normal Hearing Sensitivity Who Experience Auditory Difficulties. Am J Audiol 2020; 29:738-761. [PMID: 32966118 DOI: 10.1044/2020_aja-20-00027] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Purpose A questionnaire survey was conducted to collect information from clinical audiologists about rehabilitation options for adult patients who report significant auditory difficulties despite having normal or near-normal hearing sensitivity. This work aimed to provide more information about what audiologists are currently doing in the clinic to manage auditory difficulties in this patient population and their views on the efficacy of recommended rehabilitation methods. Method A questionnaire survey containing multiple-choice and open-ended questions was developed and disseminated online. Invitations to participate were delivered via e-mail listservs and through business cards provided at annual audiology conferences. All responses were anonymous at the time of data collection. Results Responses were collected from 209 participants. The majority of participants reported seeing at least one normal-hearing patient per month who reported significant communication difficulties. However, few respondents indicated that their location had specific protocols for the treatment of these patients. Counseling was reported as the most frequent rehabilitation method, but results revealed that audiologists across various work settings are also successfully starting to fit patients with mild-gain hearing aids. Responses indicated that patient compliance with computer-based auditory training methods was regarded as low, with patients generally preferring device-based rehabilitation options. Conclusions Results from this questionnaire survey strongly suggest that audiologists frequently see normal-hearing patients who report auditory difficulties, but that few clinicians are equipped with established protocols for diagnosis and management. While many feel that mild-gain hearing aids provide considerable benefit for these patients, very little research has been conducted to date to support the use of hearing aids or other rehabilitation options for this unique patient population. This study reveals the critical need for additional research to establish evidence-based practice guidelines that will empower clinicians to provide a high level of clinical care and effective rehabilitation strategies to these patients.
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Affiliation(s)
- Tess K. Koerner
- VA RR&D National Center for Rehabilitative Auditory Research, VA Portland Health Care System, OR
| | - Melissa A. Papesh
- VA RR&D National Center for Rehabilitative Auditory Research, VA Portland Health Care System, OR
- Department of Otolaryngology - Head & Neck Surgery, Oregon Health & Science University, Portland
| | - Frederick J. Gallun
- VA RR&D National Center for Rehabilitative Auditory Research, VA Portland Health Care System, OR
- Department of Otolaryngology - Head & Neck Surgery, Oregon Health & Science University, Portland
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19
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Tamminen H, Kujala T, Näätänen R, Peltola MS. Aging and non-native speech perception: A phonetic training study. Neurosci Lett 2020; 740:135430. [PMID: 33075423 DOI: 10.1016/j.neulet.2020.135430] [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: 03/14/2020] [Revised: 09/18/2020] [Accepted: 10/11/2020] [Indexed: 11/28/2022]
Abstract
Cognitive decline is evident in the elderly and it affects speech perception and foreign language learning. A listen-and-repeat training with a challenging speech sound contrast was earlier found to be effective in young monolingual adults and even in advanced L2 university students at the attentive and pre-attentive levels. This study investigates foreign language speech perception in the elderly with the same protocol used with the young adults. Training effects were measured with attentive behavioural measures (N = 9) and with electroencephalography measuring the pre-attentive mismatch negativity (MMN) response (N = 10). Training was effective in identification, but not in discrimination and there were no changes in the MMN. The most attention demanding perceptual functions which benefit from experience-based linguistic knowledge were facilitated through training, whereas pre-attentive processing was unaffected. The elderly would probably benefit from different training types compared to younger adults.
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Affiliation(s)
- Henna Tamminen
- Phonetics and Learning, Age & Bilingualism Laboratory (LAB-lab), Department of Future Technologies, University of Turku, Turku, Finland; Centre for Cognitive Neuroscience, University of Turku, Turku, Finland.
| | - Teija Kujala
- Cognitive Brain Research Unit, Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
| | - Risto Näätänen
- Cognitive Brain Research Unit, Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Center of Functionally Integrative Neuroscience, Aarhus University, Aarhus, Denmark; Institute of Psychology, University of Tartu, Tartu, Estonia.
| | - Maija S Peltola
- Phonetics and Learning, Age & Bilingualism Laboratory (LAB-lab), Department of Future Technologies, University of Turku, Turku, Finland; Centre for Cognitive Neuroscience, University of Turku, Turku, Finland.
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20
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Shukor NFA, Lee J, Seo YJ, Han W. Efficacy of Music Training in Hearing Aid and Cochlear Implant Users: A Systematic Review and Meta-Analysis. Clin Exp Otorhinolaryngol 2020; 14:15-28. [PMID: 32646208 PMCID: PMC7904420 DOI: 10.21053/ceo.2020.00101] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 04/06/2020] [Indexed: 11/22/2022] Open
Abstract
This study aimed to evaluate the efficacy of music training on the improvement of musical perception among hearing-impaired listeners using a systematic review and meta-analysis. Article search was conducted from five databases, Scopus, ScienceDirect, Web of Knowledge, CINAHL, and PubMed. A total of 186 participants from 10 studies investigating the music training effects on individuals fitted with hearing assistive devices and outcome measurements were included. The meta-analysis showed standardized mean difference as a measure of the effect size, in musical improvement between the preand post-training. Although the funnel plot yielded an asymmetrical graph, the Egger’s regression showed no significant publication bias. Interestingly, subgroup analysis showed that the training effect was greater in children than in adults. With a necessity of longer training period to significantly improve their musical perception, cochlear implant only users had better effect compared to bi-modal users with both cochlear implant and hearing aids. However, the difference in the training effect between the users with and without previous musical experience was nonsignificant. The present study concludes that auditory music training brings hearing-impaired listeners into better musical perception while informing that training effects differ depending on age, duration of the training, and the type of hearing device used.
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Affiliation(s)
- Nor Farawaheeda Ab Shukor
- Laboratory of Hearing and Technology, Research Institute of Audiology and Speech Pathology, Hallym University, Chuncheon, Korea.,Division of Speech Pathology and Audiology, College of Natural Sciences, Hallym University, Chuncheon, Korea
| | - Jihyeon Lee
- Laboratory of Hearing and Technology, Research Institute of Audiology and Speech Pathology, Hallym University, Chuncheon, Korea.,Department of Otorhinolaryngology, Yonsei University Wonju College of Medicine, Wonju, Korea.,Research Institute of Hearing Enhancement, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Young Joon Seo
- Department of Otorhinolaryngology, Yonsei University Wonju College of Medicine, Wonju, Korea.,Research Institute of Hearing Enhancement, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Woojae Han
- Laboratory of Hearing and Technology, Research Institute of Audiology and Speech Pathology, Hallym University, Chuncheon, Korea.,Division of Speech Pathology and Audiology, College of Natural Sciences, Hallym University, Chuncheon, Korea
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21
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Cheng Y, Zhang Y, Wang F, Jia G, Zhou J, Shan Y, Sun X, Yu L, Merzenich MM, Recanzone GH, Yang L, Zhou X. Reversal of Age-Related Changes in Cortical Sound-Azimuth Selectivity with Training. Cereb Cortex 2020; 30:1768-1778. [PMID: 31504260 DOI: 10.1093/cercor/bhz201] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 07/11/2019] [Accepted: 08/08/2019] [Indexed: 02/03/2023] Open
Abstract
The compromised abilities to understand speech and localize sounds are two hallmark deficits in aged individuals. Earlier studies have shown that age-related deficits in cortical neural timing, which is clearly associated with speech perception, can be partially reversed with auditory training. However, whether training can reverse aged-related cortical changes in the domain of spatial processing has never been studied. In this study, we examined cortical spatial processing in ~21-month-old rats that were trained on a sound-azimuth discrimination task. We found that animals that experienced 1 month of training displayed sharper cortical sound-azimuth tuning when compared to the age-matched untrained controls. This training-induced remodeling in spatial tuning was paralleled by increases of cortical parvalbumin-labeled inhibitory interneurons. However, no measurable changes in cortical spatial processing were recorded in age-matched animals that were passively exposed to training sounds with no task demands. These results that demonstrate the effects of training on cortical spatial domain processing in the rodent model further support the notion that age-related changes in central neural process are, due to their plastic nature, reversible. Moreover, the results offer the encouraging possibility that behavioral training might be used to attenuate declines in auditory perception, which are commonly observed in older individuals.
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Affiliation(s)
- Yuan Cheng
- Key Laboratory of Brain Functional Genomics of Ministry of Education, Shanghai Key Laboratory of Brain Functional Genomics, School of Life Sciences, East China Normal University, Shanghai 200062, China.,New York University-East China Normal University Institute of Brain and Cognitive Science, New York University Shanghai, Shanghai 200062, China
| | - Yifan Zhang
- Key Laboratory of Brain Functional Genomics of Ministry of Education, Shanghai Key Laboratory of Brain Functional Genomics, School of Life Sciences, East China Normal University, Shanghai 200062, China.,New York University-East China Normal University Institute of Brain and Cognitive Science, New York University Shanghai, Shanghai 200062, China
| | - Fang Wang
- Key Laboratory of Brain Functional Genomics of Ministry of Education, Shanghai Key Laboratory of Brain Functional Genomics, School of Life Sciences, East China Normal University, Shanghai 200062, China.,New York University-East China Normal University Institute of Brain and Cognitive Science, New York University Shanghai, Shanghai 200062, China
| | - Guoqiang Jia
- Key Laboratory of Brain Functional Genomics of Ministry of Education, Shanghai Key Laboratory of Brain Functional Genomics, School of Life Sciences, East China Normal University, Shanghai 200062, China.,New York University-East China Normal University Institute of Brain and Cognitive Science, New York University Shanghai, Shanghai 200062, China
| | - Jie Zhou
- Key Laboratory of Brain Functional Genomics of Ministry of Education, Shanghai Key Laboratory of Brain Functional Genomics, School of Life Sciences, East China Normal University, Shanghai 200062, China.,New York University-East China Normal University Institute of Brain and Cognitive Science, New York University Shanghai, Shanghai 200062, China
| | - Ye Shan
- Key Laboratory of Brain Functional Genomics of Ministry of Education, Shanghai Key Laboratory of Brain Functional Genomics, School of Life Sciences, East China Normal University, Shanghai 200062, China
| | - Xinde Sun
- Key Laboratory of Brain Functional Genomics of Ministry of Education, Shanghai Key Laboratory of Brain Functional Genomics, School of Life Sciences, East China Normal University, Shanghai 200062, China
| | - Liping Yu
- Key Laboratory of Brain Functional Genomics of Ministry of Education, Shanghai Key Laboratory of Brain Functional Genomics, School of Life Sciences, East China Normal University, Shanghai 200062, China
| | | | - Gregg H Recanzone
- Center for Neuroscience and Department of Neurobiology, Physiology and Behavior, University of California at Davis, CA 95616, USA
| | - Lianfang Yang
- Department of Physical Education, Zhejiang University of Finance & Economics, Hangzhou 310018, China
| | - Xiaoming Zhou
- Key Laboratory of Brain Functional Genomics of Ministry of Education, Shanghai Key Laboratory of Brain Functional Genomics, School of Life Sciences, East China Normal University, Shanghai 200062, China.,New York University-East China Normal University Institute of Brain and Cognitive Science, New York University Shanghai, Shanghai 200062, China
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22
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Modifying the Adult Rat Tonotopic Map with Sound Exposure Produces Frequency Discrimination Deficits That Are Recovered with Training. J Neurosci 2020; 40:2259-2268. [PMID: 32024780 DOI: 10.1523/jneurosci.1445-19.2019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 12/04/2019] [Accepted: 12/06/2019] [Indexed: 11/21/2022] Open
Abstract
Frequency discrimination learning is often accompanied by an expansion of the functional region corresponding to the target frequency within the auditory cortex. Although the perceptual significance of this plastic functional reorganization remains debated, greater cortical representation is generally thought to improve perception for a stimulus. Recently, the ability to expand functional representations through passive sound experience has been demonstrated in adult rats, suggesting that it may be possible to design passive sound exposures to enhance specific perceptual abilities in adulthood. To test this hypothesis, we exposed adult female Long-Evans rats to 2 weeks of moderate-intensity broadband white noise followed by 1 week of 7 kHz tone pips, a paradigm that results in the functional over-representation of 7 kHz within the adult tonotopic map. We then tested the ability of exposed rats to identify 7 kHz among distractor tones on an adaptive tone discrimination task. Contrary to our expectations, we found that map expansion impaired frequency discrimination and delayed perceptual learning. Rats exposed to noise followed by 15 kHz tone pips were not impaired at the same task. Exposed rats also exhibited changes in auditory cortical responses consistent with reduced discriminability of the exposure tone. Encouragingly, these deficits were completely recovered with training. Our results provide strong evidence that map expansion alone does not imply improved perception. Rather, plastic changes in frequency representation induced by bottom-up processes can worsen perceptual faculties, but because of the very nature of plasticity these changes are inherently reversible.SIGNIFICANCE STATEMENT The potent ability of our acoustic environment to shape cortical sensory representations throughout life has led to a growing interest in harnessing both passive sound experience and operant perceptual learning to enhance mature cortical function. We use sound exposure to induce targeted expansions in the adult rat tonotopic map and find that these bottom-up changes unexpectedly impair performance on an adaptive tone discrimination task. Encouragingly, however, we also show that training promotes the recovery of electrophysiological measures of reduced neural discriminability following sound exposure. These results provide support for future neuroplasticity-based treatments that take into account both the sensory statistics of our external environment and perceptual training strategies to improve learning and memory in the adult auditory system.
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Hudak EM, Bugos J, Andel R, Lister JJ, Ji M, Edwards JD. Keys to staying sharp: A randomized clinical trial of piano training among older adults with and without mild cognitive impairment. Contemp Clin Trials 2019; 84:105789. [PMID: 31226405 PMCID: PMC6945489 DOI: 10.1016/j.cct.2019.06.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 06/06/2019] [Accepted: 06/11/2019] [Indexed: 11/23/2022]
Abstract
BACKGROUND The prevalence of dementia, the most expensive medical condition (Kirschstein, 2000 and Hurd et al., 2013 [1,2]), and its precursor, mild cognitive impairment (MCI) are increasing [3]. Finding effective intervention strategies to prevent or delay dementia is imperative to public health. Prior research provides compelling evidence that central auditory processing (CAP) deficits are a risk factor for dementia [4-6]. Grounded in the information degradation theory [7, 8], we hypothesize that improving brain function at early perceptual levels (i.e., CAP) may be optimal to attenuate cognitive and functional decline and potentially curb dementia prevalence. Piano training is one avenue to enhance cognition [9-13] by facilitating CAP at initial perceptual stages [14-18]. OBJECTIVES The Keys To Staying Sharp study is a two arm, randomized clinical trial examining the efficacy of piano training relative to music listening instruction to improve CAP, cognition, and everyday function among older adults. In addition, the moderating effects of MCI status on piano training efficacy will be examined and potential mediators of intervention effects will be explored. HYPOTHESES We hypothesize that piano training will improve CAP and cognitive performance, leading to functional improvements. We expect that enhanced CAP will mediate cognitive gains. We further hypothesize that cognitive gains will mediate functional improvements. METHOD We plan to enroll 360 adults aged 60 years and older who will be randomized to piano training or an active control condition of music listening instruction and complete pre- and immediate post- assessments of CAP, cognition, and everyday function.
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Affiliation(s)
- Elizabeth M Hudak
- Department of Psychiatry and Behavioral Neurosciences, University of South Florida.
| | | | - Ross Andel
- School of Aging Studies, University of South Florida; Department of Neurology, Charles University and Motol University Hospital, Prague, Czech Republic
| | - Jennifer J Lister
- Department of Communication Sciences and Disorders, University of South Florida
| | - Ming Ji
- College of Nursing, University of South Florida
| | - Jerri D Edwards
- Department of Psychiatry and Behavioral Neurosciences, University of South Florida; Department of Communication Sciences and Disorders, University of South Florida
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24
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Rayes H, Al-Malky G, Vickers D. Systematic Review of Auditory Training in Pediatric Cochlear Implant Recipients. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2019; 62:1574-1593. [PMID: 31039327 DOI: 10.1044/2019_jslhr-h-18-0252] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Objective The purpose of this systematic review is to evaluate the published research in auditory training (AT) for pediatric cochlear implant (CI) recipients. This review investigates whether AT in children with CIs leads to improvements in speech and language development, cognition, and/or quality of life and whether improvements, if any, remain over time post AT intervention. Method A systematic search of 7 databases identified 96 review articles published up until January 2017, 9 of which met the inclusion criteria. Data were extracted and independently assessed for risk of bias and quality of study against a PICOS (participants, intervention, control, outcomes, and study) framework. Results All studies reported improvements in trained AT tasks, including speech discrimination/identification and working memory. Retention of improvements over time was found whenever it was assessed. Transfer of learning was measured in 4 of 6 studies, which assessed generalization. Quality of life was not assessed. Overall, evidence for the included studies was deemed to be of low quality. Conclusion Benefits of AT were illustrated through the improvement in trained tasks, and this was observed in all reviewed studies. Transfer of improvement to other domains and also retention of benefits post AT were evident when assessed, although rarely done. However, higher quality evidence to further examine outcomes of AT in pediatric CI recipients is needed.
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Affiliation(s)
- Hanin Rayes
- Department of Speech Hearing and Phonetic Sciences, Faculty of Brain Sciences, University College London, United Kingdom
| | - Ghada Al-Malky
- Ear Institute, Faculty of Brain Sciences, University College London, United Kingdom
| | - Deborah Vickers
- Department of Speech Hearing and Phonetic Sciences, Faculty of Brain Sciences, University College London, United Kingdom
- Department of Clinical Neurosciences, Clinical School, University of Cambridge, United Kingdom
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Jarollahi F, Amiri M, Jalaie S, Sameni SJ. The effects of auditory spatial training on informational masking release in elderly listeners: a study protocol for a randomized clinical trial. F1000Res 2019; 8:420. [PMID: 31354946 PMCID: PMC6652096 DOI: 10.12688/f1000research.18602.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/03/2019] [Indexed: 10/14/2023] Open
Abstract
Background: Regarding the strong auditory spatial plasticity capability of the central auditory system and the effect of short-term and long-term rehabilitation programs in elderly people, it seems that an auditory spatial training can help this population in informational masking release and better track speech in noisy environments. The main purposes of this study are developing an informational masking measurement test and an auditory spatial training program. Protocol: This study will be conducted in two parts. Part 1: develop and determine the validity of an informational masking measurement test by recruiting two groups of young (n=50) and old (n=50) participants with normal hearing who have no difficulty in understanding speech in noisy environments. Part 2 (clinical trial): two groups of 60-75-year-olds with normal hearing, who complain about difficulty in speech perception in noisy environments, will participate as control and intervention groups to examine the effect of auditory spatial training. Intervention: 8 sessions of auditory spatial training. The informational masking measurement test and Speech, Spatial and Qualities of Hearing Scale will be compared before intervention, immediately after intervention, and one month after intervention between the two groups. Discussion: Since auditory training programs do not deal with informational masking release, an auditory spatial training will be designed, aiming to improve hearing in noisy environments for elderly populations. Trial registration: Iranian Registry of Clinical Trials ( IRCT20190118042404N1) on 25 th February 2019.
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Affiliation(s)
- Farnoush Jarollahi
- Department of Audiology, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Marzieh Amiri
- Department of Audiology, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Shohreh Jalaie
- Department of Physiotherapy, School of Rehabilitation Sciences, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyyed Jalal Sameni
- Department of Audiology, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
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Jarollahi F, Amiri M, Jalaie S, Sameni SJ. The effects of auditory spatial training on informational masking release in elderly listeners: a study protocol for a randomized clinical trial. F1000Res 2019; 8:420. [PMID: 31354946 PMCID: PMC6652096 DOI: 10.12688/f1000research.18602.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/26/2019] [Indexed: 11/20/2022] Open
Abstract
Background: Regarding the strong auditory spatial plasticity capability of the central auditory system and the effect of short-term and long-term rehabilitation programs in elderly people, it seems that an auditory spatial training can help this population in informational masking release and better track speech in noisy environments. The main purposes of this study are developing an informational masking measurement test and an auditory spatial training program. Protocol: This study will be conducted in two parts. Part 1: develop and determine the validity of an informational masking measurement test by recruiting two groups of young (n=50) and old (n=50) participants with normal hearing who have no difficulty in understanding speech in noisy environments. Part 2 (clinical trial): two groups of 60-75-year-olds with normal hearing, who complain about difficulty in speech perception in noisy environments, will participate as control and intervention groups to examine the effect of auditory spatial training. Intervention: 15 sessions of auditory spatial training. The informational masking measurement test and Speech, Spatial and Qualities of Hearing Scale will be compared before intervention, immediately after intervention, and five weeks after intervention between the two groups. Discussion: Since auditory training programs do not deal with informational masking release, an auditory spatial training will be designed, aiming to improve hearing in noisy environments for elderly populations. Trial registration: Iranian Registry of Clinical Trials ( IRCT20190118042404N1) on 25 th February 2019.
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Affiliation(s)
- Farnoush Jarollahi
- Department of Audiology, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Marzieh Amiri
- Department of Audiology, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Shohreh Jalaie
- Department of Physiotherapy, School of Rehabilitation Sciences, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyyed Jalal Sameni
- Department of Audiology, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
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Consequences of hearing aid acclimatization on ALLRs and its relationship with perceived benefit and speech perception abilities. Eur Arch Otorhinolaryngol 2019; 276:1001-1010. [DOI: 10.1007/s00405-019-05303-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 01/17/2019] [Indexed: 11/29/2022]
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Abstract
Many people with difficulties following conversations in noisy settings have “clinically normal” audiograms, that is, tone thresholds better than 20 dB HL from 0.1 to 8 kHz. This review summarizes the possible causes of such difficulties, and examines established as well as promising new psychoacoustic and electrophysiologic approaches to differentiate between them. Deficits at the level of the auditory periphery are possible even if thresholds remain around 0 dB HL, and become probable when they reach 10 to 20 dB HL. Extending the audiogram beyond 8 kHz can identify early signs of noise-induced trauma to the vulnerable basal turn of the cochlea, and might point to “hidden” losses at lower frequencies that could compromise speech reception in noise. Listening difficulties can also be a consequence of impaired central auditory processing, resulting from lesions affecting the auditory brainstem or cortex, or from abnormal patterns of sound input during developmental sensitive periods and even in adulthood. Such auditory processing disorders should be distinguished from (cognitive) linguistic deficits, and from problems with attention or working memory that may not be specific to the auditory modality. Improved diagnosis of the causes of listening difficulties in noise should lead to better treatment outcomes, by optimizing auditory training procedures to the specific deficits of individual patients, for example.
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Development of a Squelch Effect in Adult Patients After Simultaneous Bilateral Cochlear Implantation. Otol Neurotol 2017; 37:1300-6. [PMID: 27579836 DOI: 10.1097/mao.0000000000001185] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To investigate whether a squelch effect occurs in the first 3 years after simultaneous bilateral cochlear implantation and to investigate whether this effect increases during follow-up. STUDY DESIGN Prospective study as part of a multicenter randomized controlled trial that compares simultaneous bilateral cochlear implantation to sequential and unilateral cochlear implantation. SETTING Tertiary referral center. PATIENTS Nineteen postlingually deafened adults. INTERVENTION Simultaneous bilateral cochlear implantation. MAIN OUTCOME MEASURE The squelch effect, measured yearly with a speech-intelligibility-in-noise test with spatially separated sources. Bilateral results were compared to unilateral results in which the cochlear implant at the noise side was turned off. The squelch effect was investigated for the patients' best performing ear and for the left and right ears separately. RESULTS In 13 individual patients, a squelch effect was present after 1 year. This number increased during follow-up years. On group level, a squelch effect was present in patients' best performing ear after 2 and 3 years (1.9 dB). A squelch effect was present in both ears after 3 years (AS: 1.7 dB, AD: 1.3 dB). CONCLUSION Patients who underwent simultaneous bilateral cochlear implantation developed a measurable benefit from the squelch effect after 2 years in their best performing ear and after 3 years in both ears. These observations suggest that the brain learns to use interaural differences to segregate sound from noise after simultaneous bilateral cochlear implantation. The squelch effect increased over time which suggests a growth in cortical integration and differentiation of inputs from bilateral CIs due to brain plasticity. TRIAL REGISTRATION Dutch Trial Register NTR1722. LEVEL OF EVIDENCE 1b.
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Delphi M, Lotfi MY, Moossavi A, Bakhshi E, Banimostafa M. Reliability of Interaural Time Difference-Based Localization Training in Elderly Individuals with Speech-in-Noise Perception Disorder. IRANIAN JOURNAL OF MEDICAL SCIENCES 2017; 42:437-442. [PMID: 29234175 PMCID: PMC5722960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Previous studies have shown that interaural-time-difference (ITD) training can improve localization ability. Surprisingly little is, however, known about localization training vis-à-vis speech perception in noise based on interaural time difference in the envelope (ITD ENV). We sought to investigate the reliability of an ITD ENV-based training program in speech-in-noise perception among elderly individuals with normal hearing and speech-in-noise disorder. METHODS The present interventional study was performed during 2016. Sixteen elderly men between 55 and 65 years of age with the clinical diagnosis of normal hearing up to 2000 Hz and speech-in-noise perception disorder participated in this study. The training localization program was based on changes in ITD ENV. In order to evaluate the reliability of the training program, we performed speech-in-noise tests before the training program, immediately afterward, and then at 2 months' follow-up. The reliability of the training program was analyzed using the Friedman test and the SPSS software. RESULTS Significant statistical differences were shown in the mean scores of speech-in-noise perception between the 3 time points (P=0.001). The results also indicated no difference in the mean scores of speech-in-noise perception between the 2 time points of immediately after the training program and 2 months' follow-up (P=0.212). CONCLUSION The present study showed the reliability of an ITD ENV-based localization training in elderly individuals with speech-in-noise perception disorder.
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Affiliation(s)
- Maryam Delphi
- Department of Audiology, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - M-Yones Lotfi
- Department of Audiology, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran,Correspondence: Yones Lotfi, MD; Department of Audiology, University of Social Welfare and Rehabilitation Sciences, Kodakyar Ave., Daneshjo Blvd., Evin, 1985713831, Tehran, Iran Tel\Fax: +98 21 22180100
| | - Abdollah Moossavi
- Department of Otolaryngology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Enayatollah Bakhshi
- Department of Biostatistics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Maryam Banimostafa
- Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Delphi M, Lotfi Y, Moossavi A, Bakhshi E, Banimostafa M. Envelope-based inter-aural time difference localization training to improve speech-in-noise perception in the elderly. Med J Islam Repub Iran 2017; 31:36. [PMID: 29445665 PMCID: PMC5804443 DOI: 10.14196/mjiri.31.36] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Indexed: 11/22/2022] Open
Abstract
Background: Many elderly individuals complain of difficulty in understanding speech in noise despite having normal hearing thresholds. According to previous studies, auditory training leads to improvement in speech-in-noise perception, but these studies did not consider the etiology, so their results cannot be generalized. The present study aimed at investigating the effectiveness of envelopebased interaural time difference (ITD ENV) localization training on improving ITD threshold and speech-in-noise perception. Methods: Thirty-two elderly males aged 55 to 65 years with clinically diagnosed normal hearing at 250-2000 Hertz, who suffered from speech-in-noise perception difficulty participated in this study. These individuals were randomly divided into training and control groups: 16 elderlies in the experimental group received envelope-based interaural time difference localization training in 9 sessions, but 16 matched elderlies in the control group did not receive any training. The ITD ENV threshold and spatial word recognition score (WRS) in noise were analyzed before and after the localization training. Results: Findings demonstrated that following the training program, the interaural time difference envelope threshold and spatial word recognition score (WRS) in noise were improved significantly in the experimental group (p≤ 0.001). Moreover, a significant difference was detected in interaural time difference envelope threshold and spatial word recognition score (WRS) in noise (p≤ 0.001) before and after the training in the experimental group. Conclusion: The results of the present study revealed the effectiveness of envelope- based interaural time difference localization training in localization ability and speech in noise perception in the elderlies with normal hearing up to 2000 Hz who suffered from speech-in-noise perception difficulty.
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Affiliation(s)
- Maryam Delphi
- Department of Audiology, University of Social Welfare and Rehabilitation Sciences, Tehran & Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz ,Iran
| | - Yones Lotfi
- Department of Audiology, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Abdollah Moossavi
- Department of Otolaryngology and Head and Neck Surgery, School of Medicine, Iran University of Medical sciences, Tehran, Iran
| | - Enayatollah Bakhshi
- Department of Biostatistics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Maryam Banimostafa
- Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Yu L, Rao A, Zhang Y, Burton PC, Rishiq D, Abrams H. Neuromodulatory Effects of Auditory Training and Hearing Aid Use on Audiovisual Speech Perception in Elderly Individuals. Front Aging Neurosci 2017; 9:30. [PMID: 28270763 PMCID: PMC5318380 DOI: 10.3389/fnagi.2017.00030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 02/06/2017] [Indexed: 11/18/2022] Open
Abstract
Although audiovisual (AV) training has been shown to improve overall speech perception in hearing-impaired listeners, there has been a lack of direct brain imaging data to help elucidate the neural networks and neural plasticity associated with hearing aid (HA) use and auditory training targeting speechreading. For this purpose, the current clinical case study reports functional magnetic resonance imaging (fMRI) data from two hearing-impaired patients who were first-time HA users. During the study period, both patients used HAs for 8 weeks; only one received a training program named ReadMyQuipsTM (RMQ) targeting speechreading during the second half of the study period for 4 weeks. Identical fMRI tests were administered at pre-fitting and at the end of the 8 weeks. Regions of interest (ROI) including auditory cortex and visual cortex for uni-sensory processing, and superior temporal sulcus (STS) for AV integration, were identified for each person through independent functional localizer task. The results showed experience-dependent changes involving ROIs of auditory cortex, STS and functional connectivity between uni-sensory ROIs and STS from pretest to posttest in both cases. These data provide initial evidence for the malleable experience-driven cortical functionality for AV speech perception in elderly hearing-impaired people and call for further studies with a much larger subject sample and systematic control to fill in the knowledge gap to understand brain plasticity associated with auditory rehabilitation in the aging population.
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Affiliation(s)
- Luodi Yu
- Department of Speech-Language-Hearing Sciences and Center for Neurobehavioral Development, University of Minnesota Minneapolis, MN, USA
| | - Aparna Rao
- Department of Speech and Hearing Sciences, Arizona State University Tempe, AZ, USA
| | - Yang Zhang
- Department of Speech-Language-Hearing Sciences and Center for Neurobehavioral Development, University of Minnesota Minneapolis, MN, USA
| | - Philip C Burton
- Office of the Associate Dean for Research, College of Liberal Arts, University of Minnesota Minneapolis, MN, USA
| | - Dania Rishiq
- Department of Speech Pathology and Audiology, University of South Alabama Mobile, AL, USA
| | - Harvey Abrams
- Department of Speech Pathology and Audiology, University of South Alabama Mobile, AL, USA
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Barlow N, Purdy SC, Sharma M, Giles E, Narne V. The Effect of Short-Term Auditory Training on Speech in Noise Perception and Cortical Auditory Evoked Potentials in Adults with Cochlear Implants. Semin Hear 2016; 37:84-98. [PMID: 27587925 DOI: 10.1055/s-0035-1570335] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
This study investigated whether a short intensive psychophysical auditory training program is associated with speech perception benefits and changes in cortical auditory evoked potentials (CAEPs) in adult cochlear implant (CI) users. Ten adult implant recipients trained approximately 7 hours on psychophysical tasks (Gap-in-Noise Detection, Frequency Discrimination, Spectral Rippled Noise [SRN], Iterated Rippled Noise, Temporal Modulation). Speech performance was assessed before and after training using Lexical Neighborhood Test (LNT) words in quiet and in eight-speaker babble. CAEPs evoked by a natural speech stimulus /baba/ with varying syllable stress were assessed pre- and post-training, in quiet and in noise. SRN psychophysical thresholds showed a significant improvement (78% on average) over the training period, but performance on other psychophysical tasks did not change. LNT scores in noise improved significantly post-training by 11% on average compared with three pretraining baseline measures. N1P2 amplitude changed post-training for /baba/ in quiet (p = 0.005, visit 3 pretraining versus visit 4 post-training). CAEP changes did not correlate with behavioral measures. CI recipients' clinical records indicated a plateau in speech perception performance prior to participation in the study. A short period of intensive psychophysical training produced small but significant gains in speech perception in noise and spectral discrimination ability. There remain questions about the most appropriate type of training and the duration or dosage of training that provides the most robust outcomes for adults with CIs.
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Affiliation(s)
- Nathan Barlow
- School of Psychology, University of Auckland, New Zealand
| | | | - Mridula Sharma
- Department of Linguistics, Macquarie University and HEARing CRC, NSW, Australia
| | - Ellen Giles
- Adult Northern Cochlear Implant Programme, University of Auckland, New Zealand
| | - Vijay Narne
- All India Institute of Speech and Hearing, University of Mysore, Mysuru, Karnataka, India
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Atcherson SR, Nagaraj NK, Kennett SEW, Levisee M. Overview of Central Auditory Processing Deficits in Older Adults. Semin Hear 2016; 36:150-61. [PMID: 27516715 DOI: 10.1055/s-0035-1555118] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Although there are many reported age-related declines in the human body, the notion that a central auditory processing deficit exists in older adults has not always been clear. Hearing loss and both structural and functional central nervous system changes with advancing age are contributors to how we listen, hear, and process auditory information. Even older adults with normal or near normal hearing sensitivity may exhibit age-related central auditory processing deficits as measured behaviorally and/or electrophysiologically. The purpose of this article is to provide an overview of assessment and rehabilitative approaches for central auditory processing deficits in older adults. It is hoped that the outcome of the information presented here will help clinicians with older adult patients who do not exhibit the typical auditory processing behaviors exhibited by others at the same age and with comparable hearing sensitivity all in the absence of other health-related conditions.
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Affiliation(s)
- Samuel R Atcherson
- University of Arkansas at Little Rock/University of Arkansas for Medical Sciences, Little Rock, Arkansas; Arkansas Consortium for the Ph.D. in Communication Sciences and Disorders, Little Rock, Arkansas
| | - Naveen K Nagaraj
- University of Arkansas at Little Rock/University of Arkansas for Medical Sciences, Little Rock, Arkansas; Arkansas Consortium for the Ph.D. in Communication Sciences and Disorders, Little Rock, Arkansas
| | - Sarah E W Kennett
- University of Arkansas at Little Rock/University of Arkansas for Medical Sciences, Little Rock, Arkansas; Arkansas Consortium for the Ph.D. in Communication Sciences and Disorders, Little Rock, Arkansas; Arkansas Children's Hospital, Little Rock, Arkansas
| | - Meredith Levisee
- University of Arkansas at Little Rock/University of Arkansas for Medical Sciences, Little Rock, Arkansas
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Cosetti MK, Pinkston JB, Flores JM, Friedmann DR, Jones CB, Roland JT, Waltzman SB. Neurocognitive testing and cochlear implantation: insights into performance in older adults. Clin Interv Aging 2016; 11:603-13. [PMID: 27274210 PMCID: PMC4869653 DOI: 10.2147/cia.s100255] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE The aim of this case series was to assess the impact of auditory rehabilitation with cochlear implantation on the cognitive function of elderly patients over time. DESIGN This is a longitudinal case series of prospective data assessing neurocognitive function and speech perception in an elderly cohort pre- and post-implantation. SETTING University cochlear implant center. PARTICIPANTS The patients were post-lingually deafened elderly female (mean, 73.6 years; SD, 5.82; range, 67-81 years) cochlear implant recipients (n=7). MEASUREMENTS A neurocognitive battery of 20 tests assessing intellectual function, learning, short- and long-term memory, verbal fluency, attention, mental flexibility, and processing speed was performed prior to and 2-4.1 years (mean, 3.7) after cochlear implant (CI). Speech perception testing using Consonant-Nucleus-Consonant words was performed prior to implantation and at regular intervals postoperatively. Individual and aggregate differences in cognitive function pre- and post-CI were estimated. Logistic regression with cluster adjustment was used to estimate the association (%improvement or %decline) between speech understanding and years from implantation at 1 year, 2 years, and 3 years post-CI. RESULTS Improvements after CI were observed in 14 (70%) of all subtests administered. Declines occurred in five (25%) subtests. In 55 individual tests (43%), post-CI performance improved compared to a patient's own performance before implantation. Of these, nine (45%) showed moderate or pronounced improvement. Overall, improvements were largest in the verbal and memory domains. Logistic regression demonstrated a significant relationship between speech perception and cognitive function over time. Five neurocognitive tests were predictive of improved speech perception following implantation. CONCLUSION Comprehensive neurocognitive testing of elderly women demonstrated areas of improvement in cognitive function and auditory perception following cochlear implantation. Multiple neurocognitive tests were strongly associated with current speech perception measures. While these data shed light on the complex relationship between hearing and cognition by showing that CI may slow the expected age-related cognitive decline, further research is needed to examine the impact of hearing rehabilitation on cognitive decline.
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Affiliation(s)
- Maura K Cosetti
- Department of Otolaryngology – Head and Neck Surgery, Louisiana State University Health Sciences Center, Shreveport, LA, USA
- Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - James B Pinkston
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Jose M Flores
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MA, USA
| | - David R Friedmann
- Department of Otolaryngology, New York University School of Medicine, New York, NY, USA
| | - Callie B Jones
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - J Thomas Roland
- Department of Otolaryngology, New York University School of Medicine, New York, NY, USA
- Department of Neurosurgery, New York University School of Medicine, New York, NY, USA
| | - Susan B Waltzman
- Department of Otolaryngology, New York University School of Medicine, New York, NY, USA
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Yang Z, Cosetti M. Safety and outcomes of cochlear implantation in the elderly: A review of recent literature. J Otol 2016; 11:1-6. [PMID: 29937803 PMCID: PMC6002585 DOI: 10.1016/j.joto.2016.03.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Revised: 03/22/2016] [Accepted: 03/24/2016] [Indexed: 10/28/2022] Open
Abstract
Global demographic changes related to longevity are leading to increasing numbers of the elderly, for whom hearing loss is a significant cause of morbidity and disability. Once met with reticence, severely hearing impaired older adults are increasingly being considered for cochlear implantation (CI). Significant data indicate that CI in the elderly population is safe, well-tolerated, and effective. Risks from CI surgery and anesthesia are low and generally comparable to rates in other age groups. Outcomes studies regarding CI in older adults have shown excellent improvements to speech perception, quality of life, and even cognition. Overall, currently available data suggests that advanced age should not, in itself, be considered a barrier to implantation. This review paper will highlight selected articles from recent medical literature regarding the safety and efficacy of CI in the elderly population.
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Affiliation(s)
- Zao Yang
- Department of Otolaryngology - Head and Neck Surgery, Louisiana State University Health, Shreveport, LA, USA
| | - Maura Cosetti
- Department of Otolaryngology - Head and Neck Surgery, Louisiana State University Health, Shreveport, LA, USA
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Melo ÂD, Costa MJ, Garcia MV, Filha VAVDS, Biaggio EPV. O uso de software no treinamento auditivo em crianças: revisão teórica. REVISTA CEFAC 2015. [DOI: 10.1590/1982-0216201517611715] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
RESUMO: O distúrbio do processamento auditivo refere-se incapacidade do sistema auditivo central em captar e interpretar as informações sonoras oriundas do ambiente externo. Para minimizar ou sanar os efeitos deste distúrbio no cotidiano dos sujeitos, é indicado terapia com treinamento auditivo. O objetivo deste estudo foi apresentar uma revisão de literatura sobre o uso de software no treinamento de habilidades auditivas em crianças. Como estratégia de pesquisa realizou-se busca em bases de dados: Scientific Eletronic Library Online (SCIELO), Sistema da Literatura Latino-Americana em Ciências da Saúde (LILACS), National Library of Medicine (MEDLINE e PUBMED) e Índice Bibliográfico Espanhol de Ciência da Saúde (IBECS) considerando estudos publicados em 2008 a 2014, utilizando as palavras-chave: percepção auditiva; estimulação acústica; software; crianças. Para inclusão, os artigos deveriam possuir publicação posterior a 2008 e treinamento auditivo computadorizado como forma de intervenção terapêutica em crianças, independente da patologia e/ou distúrbio envolvida, idioma em inglês português ou espanhol. Nos estudos realizados nos últimos seis anos, o uso de software no treinamento auditivo em crianças tem se mostrado uma ferramenta eficaz. Os artigos analisados mostraram que o uso de programas computadorizado permite engajamento e motivação, além da reabilitação das habilidades auditivas alteradas.
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Ferguson M, Henshaw H. How Does Auditory Training Work? Joined-Up Thinking and Listening. Semin Hear 2015; 36:237-49. [PMID: 27587911 PMCID: PMC4910541 DOI: 10.1055/s-0035-1564456] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Auditory training aims to compensate for degradation in the auditory signal and is offered as an intervention to help alleviate the most common complaint in people with hearing loss, understanding speech in a background noise. Yet there remain many unanswered questions. This article reviews some of the key pieces of evidence that assess the evidence for whether, and how, auditory training benefits adults with hearing loss. The evidence supports that improvements occur on the trained task; however, transfer of that learning to generalized real-world benefit is much less robust. For more than a decade, there has been an increasing awareness of the role that cognition plays in listening. But more recently in the auditory training literature, there has been an increased focus on assessing how cognitive performance relevant for listening may improve with training. We argue that this is specifically the case for measures that index executive processes, such as monitoring, attention switching, and updating of working memory, all of which are required for successful listening and communication in challenging or adverse listening conditions. We propose combined auditory-cognitive training approaches, where training interventions develop cognition embedded within auditory tasks, which are most likely to offer generalized benefits to the real-world listening abilities of people with hearing loss.
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Affiliation(s)
- Melanie Ferguson
- NIHR Nottingham Hearing Biomedical Research Unit, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, Nottingham, United Kingdom
- Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom
| | - Helen Henshaw
- NIHR Nottingham Hearing Biomedical Research Unit, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, Nottingham, United Kingdom
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Zueva MV. Fractality of sensations and the brain health: the theory linking neurodegenerative disorder with distortion of spatial and temporal scale-invariance and fractal complexity of the visible world. Front Aging Neurosci 2015; 7:135. [PMID: 26236232 PMCID: PMC4502359 DOI: 10.3389/fnagi.2015.00135] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 07/02/2015] [Indexed: 11/26/2022] Open
Abstract
The theory that ties normal functioning and pathology of the brain and visual system with the spatial-temporal structure of the visual and other sensory stimuli is described for the first time in the present study. The deficit of fractal complexity of environmental influences can lead to the distortion of fractal complexity in the visual pathways of the brain and abnormalities of development or aging. The use of fractal light stimuli and fractal stimuli of other modalities can help to restore the functions of the brain, particularly in the elderly and in patients with neurodegenerative disorders or amblyopia. Non-linear dynamics of these physiological processes have a strong base of evidence, which is seen in the impaired fractal regulation of rhythmic activity in aged and diseased brains. From birth to old age, we live in a non-linear world, in which objects and processes with the properties of fractality and non-linearity surround us. Against this background, the evolution of man took place and all periods of life unfolded. Works of art created by man may also have fractal properties. The positive influence of music on cognitive functions is well-known. Insufficiency of sensory experience is believed to play a crucial role in the pathogenesis of amblyopia and age-dependent diseases. The brain is very plastic in its early development, and the plasticity decreases throughout life. However, several studies showed the possibility to reactivate the adult's neuroplasticity in a variety of ways. We propose that a non-linear structure of sensory information on many spatial and temporal scales is crucial to the brain health and fractal regulation of physiological rhythms. Theoretical substantiation of the author's theory is presented. Possible applications and the future research that can experimentally confirm or refute the theoretical concept are considered.
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Affiliation(s)
- Marina V. Zueva
- The Division of Clinical Physiology of Vision, Federal State Budgetary Institution “Moscow Helmholtz Research Institute of Eye Diseases" of the Ministry of Healthcare of the Russian FederationMoscow, Russia
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Morais AA, Rocha-Muniz CN, Schochat E. Efficacy of auditory training in elderly subjects. Front Aging Neurosci 2015; 7:78. [PMID: 26042031 PMCID: PMC4434904 DOI: 10.3389/fnagi.2015.00078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 04/26/2015] [Indexed: 12/26/2022] Open
Abstract
Auditory training (AT) has been used for auditory rehabilitation in elderly individuals and is an effective tool for optimizing speech processing in this population. However, it is necessary to distinguish training-related improvements from placebo and test-retest effects. Thus, we investigated the efficacy of short-term AT [acoustically controlled auditory training (ACAT)] in elderly subjects through behavioral measures and P300. Sixteen elderly individuals with auditory processing disorder (APD) received an initial evaluation (evaluation 1 - E1) consisting of behavioral and electrophysiological tests (P300 evoked by tone burst and speech sounds) to evaluate their auditory processing. The individuals were divided into two groups. The Active Control Group (n = 8) underwent placebo training. The Passive Control Group (n = 8) did not receive any intervention. After 12 weeks, the subjects were revaluated (evaluation 2 - E2). Then, all of the subjects underwent ACAT. Following another 12 weeks (eight training sessions), they underwent the final evaluation (evaluation 3 - E3). There was no significant difference between E1 and E2 in the behavioral test [F(9.6) = 0.06, p = 0.92, λ de Wilks = 0.65)] or P300 [F(8.7) = 2.11, p = 0.17, λ de Wilks = 0.29] (discarding the presence of placebo effects and test-retest). A significant improvement was observed between the pre- and post-ACAT conditions (E2 and E3) for all auditory skills according to the behavioral methods [F(4.27) = 0.18, p = 0.94, λ de Wilks = 0.97]. However, the same result was not observed for P300 in any condition. There was no significant difference between P300 stimuli. The ACAT improved the behavioral performance of the elderly for all auditory skills and was an effective method for hearing rehabilitation.
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Affiliation(s)
- Aline Albuquerque Morais
- Auditory Processing Laboratory, Department of Physical Therapy, Speech Therapy and Occupational Therapy, University of São Paulo, São Paulo, Brazil
| | - Caroline Nunes Rocha-Muniz
- Auditory Processing Laboratory, Department of Physical Therapy, Speech Therapy and Occupational Therapy, University of São Paulo, São Paulo, Brazil
| | - Eliane Schochat
- Auditory Processing Laboratory, Department of Physical Therapy, Speech Therapy and Occupational Therapy, University of São Paulo, São Paulo, Brazil
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Krishnamurti S, Tingle D, Bannon H, Armstrong M. Role of Auditory Training in Intervention of Individuals With Cognitive Decline and Hearing Impairment. ACTA ACUST UNITED AC 2015. [DOI: 10.1044/gero20.2.58] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The role of auditory training in enhancement of auditory and cognitive function in aging individuals with hearing loss and cognitive decline is discussed in this article. Results of previous controlled studies and the current pilot (Angel Sound) support value for auditory training for these individuals.
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