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Leaver AM, Chen YJ, Parrish TB. Focal tDCS of auditory cortex in chronic tinnitus: A randomized controlled mechanistic trial. Clin Neurophysiol 2024; 158:79-91. [PMID: 38198874 PMCID: PMC10896454 DOI: 10.1016/j.clinph.2023.11.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 10/24/2023] [Accepted: 11/13/2023] [Indexed: 01/12/2024]
Abstract
OBJECTIVE The goal of this pilot study was to understand how focal transcranial direct current stimulation (tDCS) targeting auditory cortex changes brain function in chronic tinnitus using magnetic resonance imaging (MRI). METHODS People with chronic tinnitus were randomized to active or sham tDCS on five consecutive days in this mechanistic trial (n = 10/group). Focal 4x1 tDCS (central anode, surround cathodes) targeted left auditory cortex, with single-blind 2 mA current during twenty-minute sessions. Arterial spin-labeled and blood oxygenation level dependent MRI occurred immediately before and after the first tDCS session, and tinnitus symptoms were measured starting one week before the first tDCS session and through four weeks after the final session. RESULTS Acute increases in cerebral blood flow and functional connectivity were noted in auditory cortex after the first active tDCS session. Reduced tinnitus loudness ratings after the final tDCS session correlated with acute change in functional connectivity between an auditory network and mediodorsal thalamus and prefrontal cortex. Reduced tinnitus intrusiveness also correlated with acute change in connectivity between precuneus and an auditory network. CONCLUSIONS Focal auditory-cortex tDCS can influence function in thalamus, auditory, and prefrontal cortex, which may associate with improved tinnitus. SIGNIFICANCE With future refinement, tDCS targeting auditory cortex could become a viable intervention for tinnitus.
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Affiliation(s)
- Amber M Leaver
- Department of Radiology, Northwestern University, Chicago, IL 60611, USA.
| | - Yufen J Chen
- Department of Radiology, Northwestern University, Chicago, IL 60611, USA
| | - Todd B Parrish
- Department of Radiology, Northwestern University, Chicago, IL 60611, USA
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Leaver AM, Chen YJ, Parrish TB. Focal transcranial direct current stimulation of auditory cortex in chronic tinnitus: A randomized controlled mechanistic trial. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.07.12.23292557. [PMID: 37502874 PMCID: PMC10370232 DOI: 10.1101/2023.07.12.23292557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Objective The goal of this pilot MRI study was to understand how focal transcranial direct current stimulation (tDCS) targeting auditory cortex changes brain function in chronic tinnitus. Methods People with chronic tinnitus were randomized to active or sham tDCS on five consecutive days in this pilot mechanistic trial (n=10/group). Focal 4×1 tDCS (central anode, surround cathodes) targeted left auditory cortex, with single-blind 2mA current during twenty-minute sessions. Arterial spin-labeled and blood oxygenation level dependent MRI occurred immediately before and after the first tDCS session, and tinnitus symptoms were measured starting one week before the first tDCS session and through four weeks after the final session. Results Acute increases in cerebral blood flow and functional connectivity were noted in auditory cortex after the first active tDCS session. Reduced tinnitus loudness ratings after the final tDCS session correlated with acute change in functional connectivity between an auditory network and mediodorsal thalamus and prefrontal cortex. Reduced tinnitus intrusiveness also correlated with acute change in connectivity between precuneus and an auditory network. Conclusions Focal auditory-cortex tDCS can influence function in thalamus, auditory, and prefrontal cortex, which may associate with improved tinnitus. Significance With future refinement, noninvasive brain stimulation targeting auditory cortex could become a viable intervention for tinnitus.
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Affiliation(s)
- Amber M. Leaver
- Department of Radiology, Northwestern University, Chicago, IL, 60611
| | - Yufen J. Chen
- Department of Radiology, Northwestern University, Chicago, IL, 60611
| | - Todd B. Parrish
- Department of Radiology, Northwestern University, Chicago, IL, 60611
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Chen S, Du M, Wang Y, Li Y, Tong B, Qiu J, Wu F, Liu Y. State of the art: non-invasive electrical stimulation for the treatment of chronic tinnitus. Ther Adv Chronic Dis 2023; 14:20406223221148061. [PMID: 36860934 PMCID: PMC9969452 DOI: 10.1177/20406223221148061] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 12/13/2022] [Indexed: 01/19/2023] Open
Abstract
Subjective tinnitus is the perception of sound in the absence of external stimulation. Neuromodulation is a novel method with promising properties for application in tinnitus management. This study sought to review the types of non-invasive electrical stimulation in tinnitus to provide the foothold for further research. PubMed, EMBASE, and Cochrane databases were searched for studies on the modulation of tinnitus by non-invasive electrical stimulation. Among the four forms of non-invasive electrical modulation, transcranial direct current stimulation, transcranial random noise stimulation, and transauricular vagus nerve stimulation yielded promising results, whereas the effect of transcranial alternating current stimulation in the treatment of tinnitus has not been confirmed. Non-invasive electrical stimulation can effectively suppress tinnitus perception in some patients. However, the heterogeneity in parameter settings leads to scattered and poorly replicated findings. Further high-quality studies are needed to identify optimal parameters to develop more acceptable protocols for tinnitus modulation.
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Affiliation(s)
- Shanwen Chen
- Department of Otorhinolaryngology–Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, P.R. China
| | - Maoshan Du
- Department of Otorhinolaryngology–Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, P.R. China
| | - Yang Wang
- Department of Otorhinolaryngology–Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, P.R. China
| | - Yifan Li
- Department of Otorhinolaryngology–Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, P.R. China
| | - Busheng Tong
- Department of Otorhinolaryngology–Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, P.R. China
| | - Jianxin Qiu
- Department of Otorhinolaryngology–Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, P.R. China
| | - Feihu Wu
- Department of Otorhinolaryngology–Head and Neck Surgery, The First Affiliated Hospital of Anhui University of Chinese Medicine, 117 Meishan Road, Hefei 230031, Anhui, P.R. China
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Transcranial electric and acoustic stimulation for tinnitus: study protocol for a randomized double-blind controlled trial assessing the influence of combined transcranial random noise and acoustic stimulation on tinnitus loudness and distress. Trials 2022; 23:418. [PMID: 35590399 PMCID: PMC9118607 DOI: 10.1186/s13063-022-06253-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 03/29/2022] [Indexed: 11/26/2022] Open
Abstract
Background Tinnitus is the result of aberrant neuronal activity. As a novel treatment form, neuromodulation is used to modify neuronal activity of brain areas involved in tinnitus generation. Among the different forms of electric stimulation, transcranial random noise stimulation (tRNS) has been shown to be a promising treatment option for tinnitus. In addition, recent studies indicate that the reduction in tinnitus can be more pronounced when different modalities of stimulation techniques are combined (“bimodal stimulation”). TRNS can be used in combination with acoustic stimulation (AS), a further treatment option recognized in the literature. The aim of the proposed study is to investigate whether simultaneous tRNS and AS improve levels of tinnitus loudness and distress. Methods The intervention consists of bilateral high-definition tRNS (HD-tRNS) over the auditory cortex combined with the application of AS which is studied in a crossover design. The visits will be performed in 26 sessions. There will be 20 treatment sessions, divided into two blocks: active and sham HD-tRNS. Within the blocks, the interventions are divided into group A: HD-tRNS and AS, and group B: HD-tRNS alone. Furthermore, in addition to the assessments directly following the intervention sessions, there will be six extra sessions performed subsequently at the end of each block, after a period of some days (follow-ups 1 and 2) and a month after the last intervention (C). Primary outcome measures are analog scales for evaluation of subjective tinnitus loudness and distress, and the audiological measurement of minimum masking level (MML). Secondary outcome measures are brain activity as measured by electroencephalography and standardized questionnaires for evaluating tinnitus distress and severity. Discussion To the best of our knowledge, this is the first study which uses HD-tRNS combined with AS for tinnitus treatment. The crossover design permits the comparison between HD-tRNS active vs. sham and with vs. without AS. Thus, it will be possible to evaluate the efficacy of the combined approach to HD-tRNS alone. In addition, the use of different objective and subjective evaluations for tinnitus enable more reliable and valid results. Trial registration Swiss Ethics Committee (BASEC-Nr. 2020-02027); Swiss Federal Complementary Database (kofam.ch: SNCTP000004051); and ClinicalTrials.gov (clinicaltrials.gov: NCT04551404).
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Martins ML, Souza DDS, Cavalcante MEDOB, Barboza HN, de Medeiros JF, Dos Santos Andrade SMM, Machado DGDS, da Rosa MRD. Effect of transcranial Direct Current Stimulation for tinnitus treatment: A systematic review and meta-analysis. Neurophysiol Clin 2022; 52:1-16. [PMID: 35027291 DOI: 10.1016/j.neucli.2021.12.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 12/18/2021] [Accepted: 12/19/2021] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVES To evaluate the effect of tDCS on tinnitus distress, loudness and psychiatric symptoms. METHODS A systematic literature search of PubMed, Web of Science, Cochrane Library, VHL, EMBASE, PsycINFO, OVID, and CINAHL databases was carried out on articles published until July 2021. Inclusion criteria were published controlled trials using tDCS intervention with tinnitus patients, using a sham/control group, and measuring tinnitus loudness, distress and/or psychiatric symptoms. A meta-analysis was performed for the overall effect as well as to compare subgroups according to tDCS target (left temporoparietal area (LTA) and dorsolateral prefrontal cortex (DLPFC)). RESULTS Fourteen articles with 1031 participants were included. Six studies applied tDCS over the DLPFC, six over the LTA and two over both areas. Although the overall meta-analysis showed that tDCS significantly decreased tinnitus loudness (SMD=-0.35; 95%CI=-0.62 to -0.08, p = 0.01) and distress (SMD=-0.50, 95%CI=-0.91 to -0.10, p = 0.02).The subgroup analysis showed a significant effect only for tDCS over LTA for loudness (SMD=-0.46, 95%CI=-0.80 to -0.12, p = 0.009), and no other area resulted in significant change. There was no significant effect of treatment on psychiatric symptoms. CONCLUSION tDCS may improve tinnitus loudness and distress with a small to moderate effect size. Despite the overall positive effect, only LTA tDCS yielded a significant effect. Further well-controlled studies with larger sample sizes and broader exploration of tDCS montages and doses are warranted.
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Affiliation(s)
- Mariana Lopes Martins
- Department of Speech-Language Pathology, Federal University of Paraiba, João Pessoa, PB 58051-900, Brazil.
| | - Dayse da Silva Souza
- Department of Neuroscience and Cognition, Federal University of ABC, São Paulo, SP 09606-070, Brazil
| | | | - Hionara Nascimento Barboza
- Department of Speech-Language Pathology, Federal University of Paraiba, João Pessoa, PB 58051-900, Brazil
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覃 荣, 曾 祥. [Improving the role of rTMS and tDCS in the treatment of chronic tinnitus by combining other rehabilitation techniques]. LIN CHUANG ER BI YAN HOU TOU JING WAI KE ZA ZHI = JOURNAL OF CLINICAL OTORHINOLARYNGOLOGY, HEAD, AND NECK SURGERY 2021; 35:468-471. [PMID: 34304478 PMCID: PMC10128478 DOI: 10.13201/j.issn.2096-7993.2021.05.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Indexed: 06/13/2023]
Abstract
The formation and maintenance of chronic tinnitus are the result of cortical reorganization. Repeated transcranial magnetic stimulation and transcranial direct current stimulation are non-invasive brain stimulation techniques that can regulate reorganization of auditory cortex in tinnitus. However, the effects of the two technologies on tinnitus is only moderate effectiveness. At present, the treatment results in chronic tinnitus are currently burdened by only moderate improvement and high interindividual variability indicating the need for optimization strategies. This article reviews the role of repeated transcranial magnetic stimulation and transcranial direct current stimulation in the treatment of chronic tinnitus by combining other treatment regimens.
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Affiliation(s)
- 荣斌 覃
- 中山大学新华学院听力与言语科学系(广州,510520)
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Solomons CD, Shanmugasundaram V. Transcranial direct current stimulation: A review of electrode characteristics and materials. Med Eng Phys 2020; 85:63-74. [PMID: 33081965 DOI: 10.1016/j.medengphy.2020.09.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 09/10/2020] [Accepted: 09/25/2020] [Indexed: 12/15/2022]
Abstract
Electrode characteristics are crucial in transcranial direct current stimulation (tDCS) since electrode design and placement determine the cortical area being modulated, current density and spatial resolution of stimulation. Early research on tDCS sought to determine optimal parameters for stimulation by specifying maximum current, duration and sizes of electrodes. Further research focused on determining efficient ways to deliver stimulation to targeted regions on the cortex with minimal discomfort to the user by altering electrode size, placement, shape and material. This review aims to give an insight on the main characteristics of electrodes used in tDCS and on the variability found in electrode parameters and placements from tDCS to high definition tDCS (HD-tDCS) applications and beyond.
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Affiliation(s)
- Cassandra D Solomons
- School of Electrical Engineering, Vellore Institute of Technology, Vellore 632014, India
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Pellegrini M, Zoghi M, Jaberzadeh S. The effects of transcranial direct current stimulation on corticospinal and cortico-cortical excitability and response variability: Conventional versus high-definition montages. Neurosci Res 2020; 166:12-25. [PMID: 32610058 DOI: 10.1016/j.neures.2020.06.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 06/08/2020] [Accepted: 06/11/2020] [Indexed: 01/19/2023]
Abstract
Response variability following transcranial direct current stimulation (tDCS) highlights need for exploring different tDCS electrode montages. Corticospinal excitability (CSE), cortico-cortical excitability and intra-individual variability was compared following conventional and high-definition (HD) anodal (a-tDCS) and cathodal (c-tDCS) tDCS. Fifteen healthy males attended four sessions at-least one-week apart: conventional a-tDCS, conventional c-tDCS, HD-a-tDCS, HD-c-tDCS. TDCS was administered (1 mA, 10-minutes) over primary motor cortex (M1), via 6 × 4 cm active and 7 × 5 cm return electrodes (conventional tDCS) and 4 × 1 ring-electrodes 3.5 cm apart over M1 (HD-tDCS). For CSE, twenty-five single-pulse transcranial magnetic stimulation (TMS) peak-to-peak motor evoked potentials (MEP) were recorded at baseline, 0-minutes and 30-minutes post-tDCS. Twenty-five paired-pulse MEPs with 3-millisecond (ms) inter-pulse interval (IPI) and twenty-five at 10 ms assessed short-interval intracortical inhibition (SICI) and intracortical facilitation (ICF). MEP standardised z-values standard deviations represented intra-individual variability. No significant changes in CSE from baseline were reported for all four interventions. No significant differences were reported in CSE between conventional and HD a-tDCS, but significant differences between conventional and HD c-tDCS 0-minutes post-tDCS. Conventional tDCS significantly reduced intra-individual variability compared to HD-tDCS for a-tDCS (0-minutes) and c-tDCS (30-minutes). No changes were reported for SICI/ICF. These novel findings of increased intra-individual variability following HD-tDCS, at the current stimulus parameters, highlight need for further nuanced research and refinement to optimise the HD-tDCS dosage-response relationship.
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Affiliation(s)
- Michael Pellegrini
- Non-Invasive Brain Stimulation and Neuroplasticity Laboratory, Department of Physiotherapy, School of Primary and Allied Health Care, Faculty of Medicine, Nursing and Health Science, Monash University, Melbourne, Australia.
| | - Maryam Zoghi
- Department of Rehabilitation, Nutrition and Sport, School of Allied Health, Discipline of Physiotherapy, La Trobe University, Melbourne, Australia
| | - Shapour Jaberzadeh
- Non-Invasive Brain Stimulation and Neuroplasticity Laboratory, Department of Physiotherapy, School of Primary and Allied Health Care, Faculty of Medicine, Nursing and Health Science, Monash University, Melbourne, Australia
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Elyssa Kok T, Schaette R, Shekhawat GS. Impact of tDCS and HD-tDCS on tinnitus perception: A scoping review. PROGRESS IN BRAIN RESEARCH 2020; 262:225-244. [PMID: 33931181 DOI: 10.1016/bs.pbr.2020.05.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Tinnitus is the auditory phantom perception of a sound that severely affects the quality of life of over 300,000 people in the United Kingdom alone. Transcranial direct current stimulation (tDCS) is a noninvasive brain stimulation tool, which has been investigated as a potential tinnitus management option since 2006. This study aimed to investigate the impact of tDCS and high-definition transcranial direct current stimulation (HD-tDCS) on tinnitus perception. A scoping review was undertaken using the framework by Arksey and O'malley (2005). After consideration of relevance, 38 primary research studies were included in the data charting to examine the impact of (HD-)tDCS on tinnitus. Twenty-two of the primary research studies reported significant therapeutic effects of (HD)-tDCS on tinnitus perception. However, only eight of these included a sham-control condition. The tDCS protocols in the studies were highly heterogeneous and sample sizes were generally small. More double-blind, sham-controlled trials are needed that use similar protocols and outcome measures before definitive conclusions about the efficacy of (HD-)tDCS for tinnitus can be drawn.
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Affiliation(s)
- Tori Elyssa Kok
- Ear Institute, University College London, London, United Kingdom
| | - Roland Schaette
- Ear Institute, University College London, London, United Kingdom
| | - Giriraj Singh Shekhawat
- Ear Institute, University College London, London, United Kingdom; Tinnitus Research Initiative, Regensburg, Germany.
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Jacquemin L, Shekhawat GS, Van de Heyning P, Mertens G, Fransen E, Van Rompaey V, Topsakal V, Moyaert J, Beyers J, Gilles A. Effects of Electrical Stimulation in Tinnitus Patients: Conventional Versus High-Definition tDCS. Neurorehabil Neural Repair 2018; 32:714-723. [PMID: 30019630 DOI: 10.1177/1545968318787916] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Contradictory results have been reported for transcranial direct current stimulation (tDCS) as treatment for tinnitus. The recently developed high-definition tDCS (HD tDCS) uses smaller electrodes to limit the excitation to the desired brain areas. OBJECTIVE The current study consisted of a retrospective part and a prospective part, aiming to compare 2 tDCS electrode placements and to explore effects of HD tDCS by matched pairs analyses. METHODS Two groups of 39 patients received tDCS of the dorsolateral prefrontal cortex (DLPFC) or tDCS of the right supraorbital-left temporal area (RSO-LTA). Therapeutic effects were assessed with the tinnitus functional index (TFI), a visual analogue scale (VAS) for tinnitus loudness, and the hyperacusis questionnaire (HQ) filled out at 3 visits: pretherapy, posttherapy, and follow-up. With a new group of patients and in a similar way, the effects of HD tDCS of the right DLPFC were assessed, with the tinnitus questionnaire (TQ) and the hospital anxiety and depression scale (HADS) added. RESULTS TFI total scores improved significantly after both tDCS and HD tDCS (DLPFC: P < .01; RSO-LTA: P < .01; HD tDCS: P = .05). In 32% of the patients, we observed a clinically significant improvement in TFI. The 2 tDCS groups and the HD tDCS group showed no differences on the evolution of outcomes over time (TFI: P = .16; HQ: P = .85; VAS: P = .20). CONCLUSIONS TDCS and HD tDCS resulted in a clinically significant improvement in TFI in 32% of the patients, with the 3 stimulation positions having similar results. Future research should focus on long-term effects of electrical stimulation.
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Affiliation(s)
- Laure Jacquemin
- 1 Department of Otorhinolaryngology and Head & Neck Surgery, Antwerp University Hospital, Edegem, Belgium.,2 Faculty of Medicine, Campus Drie Eiken, Antwerp University, Wilrijk, Belgium
| | - Giriraj Singh Shekhawat
- 3 University of Auckland, Auckland, New Zealand.,4 Tinnitus Research Initiative, Regensburg, Germany
| | - Paul Van de Heyning
- 1 Department of Otorhinolaryngology and Head & Neck Surgery, Antwerp University Hospital, Edegem, Belgium.,2 Faculty of Medicine, Campus Drie Eiken, Antwerp University, Wilrijk, Belgium
| | - Griet Mertens
- 1 Department of Otorhinolaryngology and Head & Neck Surgery, Antwerp University Hospital, Edegem, Belgium.,2 Faculty of Medicine, Campus Drie Eiken, Antwerp University, Wilrijk, Belgium
| | - Erik Fransen
- 1 Department of Otorhinolaryngology and Head & Neck Surgery, Antwerp University Hospital, Edegem, Belgium.,5 Center for Medical Genetics, Antwerp University Hospital and University of Antwerp, Edegem, Belgium.,6 StatUa Center for Statistics, University of Antwerp, Antwerp, Belgium
| | - Vincent Van Rompaey
- 1 Department of Otorhinolaryngology and Head & Neck Surgery, Antwerp University Hospital, Edegem, Belgium.,2 Faculty of Medicine, Campus Drie Eiken, Antwerp University, Wilrijk, Belgium
| | - Vedat Topsakal
- 1 Department of Otorhinolaryngology and Head & Neck Surgery, Antwerp University Hospital, Edegem, Belgium.,2 Faculty of Medicine, Campus Drie Eiken, Antwerp University, Wilrijk, Belgium
| | - Julie Moyaert
- 1 Department of Otorhinolaryngology and Head & Neck Surgery, Antwerp University Hospital, Edegem, Belgium
| | - Jolien Beyers
- 1 Department of Otorhinolaryngology and Head & Neck Surgery, Antwerp University Hospital, Edegem, Belgium.,2 Faculty of Medicine, Campus Drie Eiken, Antwerp University, Wilrijk, Belgium
| | - Annick Gilles
- 1 Department of Otorhinolaryngology and Head & Neck Surgery, Antwerp University Hospital, Edegem, Belgium.,2 Faculty of Medicine, Campus Drie Eiken, Antwerp University, Wilrijk, Belgium.,7 Department of Human and Social Welfare, University College Ghent, Ghent, Belgium
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Wang TC, Tyler RS, Chang TY, Chen JC, Lin CD, Chung HK, Tsou YA. Effect of Transcranial Direct Current Stimulation in Patients With Tinnitus: A Meta-Analysis and Systematic Review. Ann Otol Rhinol Laryngol 2017; 127:79-88. [PMID: 29192507 DOI: 10.1177/0003489417744317] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Tang-Chuan Wang
- Department of Otolaryngology-Head and Neck Surgery, China Medical University Hospital, Taichung, Taiwan
- College of Medicine, China Medical University, Taichung, Taiwan
| | - Richard S. Tyler
- Department of Otolaryngology-Head and Neck Surgery, University of Iowa, Iowa City, Iowa, USA
| | - Ta-Yuan Chang
- Department of Occupational Safety and Health, College of Public Health, China Medical University, Taichung, Taiwan
| | - Jui-Cheng Chen
- College of Medicine, China Medical University, Taichung, Taiwan
- Department of Neurology, China Medical University Hospital, Taichung, Taiwan
| | - Chia-Der Lin
- Department of Otolaryngology-Head and Neck Surgery, China Medical University Hospital, Taichung, Taiwan
- College of Medicine, China Medical University, Taichung, Taiwan
| | - Hsiung-Kwang Chung
- Department of Otolaryngology-Head and Neck Surgery, China Medical University Hospital, Taichung, Taiwan
- College of Medicine, China Medical University, Taichung, Taiwan
| | - Yung-An Tsou
- Department of Otolaryngology-Head and Neck Surgery, China Medical University Hospital, Taichung, Taiwan
- College of Medicine, China Medical University, Taichung, Taiwan
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Searchfield GD, Durai M, Linford T. A State-of-the-Art Review: Personalization of Tinnitus Sound Therapy. Front Psychol 2017; 8:1599. [PMID: 28970812 PMCID: PMC5609106 DOI: 10.3389/fpsyg.2017.01599] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Accepted: 08/31/2017] [Indexed: 12/21/2022] Open
Abstract
Background: There are several established, and an increasing number of putative, therapies using sound to treat tinnitus. There appear to be few guidelines for sound therapy selection and application. Aim: To review current approaches to personalizing sound therapy for tinnitus. Methods: A "state-of-the-art" review (Grant and Booth, 2009) was undertaken to answer the question: how do current sound-based therapies for tinnitus adjust for tinnitus heterogeneity? Scopus, Google Scholar, Embase and PubMed were searched for the 10-year period 2006-2016. The search strategy used the following key words: "tinnitus" AND "sound" AND "therapy" AND "guidelines" OR "personalized" OR "customized" OR "individual" OR "questionnaire" OR "selection." The results of the review were cataloged and organized into themes. Results: In total 165 articles were reviewed in full, 83 contained sufficient details to contribute to answering the study question. The key themes identified were hearing compensation, pitched-match therapy, maskability, reaction to sound and psychosocial factors. Although many therapies mentioned customization, few could be classified as being personalized. Several psychoacoustic and questionnaire-based methods for assisting treatment selection were identified. Conclusions: Assessment methods are available to assist clinicians to personalize sound-therapy and empower patients to be active in therapy decision-making. Most current therapies are modified using only one characteristic of the individual and/or their tinnitus.
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Affiliation(s)
- Grant D. Searchfield
- Section of Audiology, Eisdell Moore Centre, The University of AucklandAuckland, New Zealand
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