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Zha B, Zhang Y, Shi F, Cheng L, Rong Z, Yu L, Liu W, Xue Q, Ye M, Yang J, Qiu B, Yang J. Modulations of resting-static functional connectivity on insular by electroacupuncture in subjective tinnitus. Front Neurol 2024; 15:1373390. [PMID: 38585348 PMCID: PMC10995322 DOI: 10.3389/fneur.2024.1373390] [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: 01/19/2024] [Accepted: 03/11/2024] [Indexed: 04/09/2024] Open
Abstract
Objective To explore the modulations of electroacupuncture in subjective tinnitus (ST) by comparing the difference of functional connectivity (FC) in ST patients and healthy volunteers between the insular (INS) and the whole brain region. Methods A total of 34 ST patients were selected into electroacupuncture group (EG) and 34 age- and sex-matched normal subjects were recruited into control group (CG). The EG received acupuncture at SI19 (Tinggong), GB11 (Touqiaoyin), TE17 (Yifeng), GV20 (Baihui), GV15 (Yamen), GV14 (Dazhui), SJ13 (Zhongzhu), among which the points of SI19 and GB11 were connected to the electroacupuncture instrument with the density wave of 2/50 Hz, and 3 treatments per week for 10 sessions in total. The severity of tinnitus was evaluated by Tinnitus Handicap Inventory (THI), the hearing status was recorded using pure tone audiometry, and resting-state functional magnetic resonance imaging (rs-fMRI) was performed on the brain before and after treatment, the CG received no intervention yet only rs-fMRI data were collected. Results With the electroacupuncture treatment, the total THI score, average air conduction threshold of patients of EG were significantly lower than before (p < 0.01), and the total effective rate was 88.24%. Compared with CG, FC of ST patients between INS and left superior temporal gyrus and right hippocampal significantly decreased before treatment, while FC of ST patients between INS and right superior frontal gyrus, left middle frontal gyrus and right anterior cuneus significantly decreased after treatment (voxel p < 0.001, cluster p < 0.05, corrected with GRF). FC of ST patients between the INS and right middle frontal gyrus, left superior frontal gyrus and right paracentral lobule showed a significant decrease after treatment (voxel p < 0.001, cluster p < 0.05, corrected with GRF). In addition, THI score in EG was negatively correlated with the reduction of FC value in INS-left superior frontal gyrus before treatment (r = -0.41, p = 0.017). Therefore, this study suggests that abnormal FC of INS may be one of the significant central mechanisms of ST patients and can be modulated by electroacupuncture. Discussion Electroacupuncture treatment can effectively reduce or eliminate tinnitus symptoms in ST patients and improve the hearing by decreasing FC between the INS and the frontal and temporal brain regions.
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Affiliation(s)
- Bixiang Zha
- The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
| | - Yating Zhang
- The First School of Clinical Medicine, Anhui University of Chinese Medicine, Hefei, China
| | - Feifei Shi
- The Second Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
| | - Ling Cheng
- The School of Humanity and International Education and Exchange, Anhui University of Chinese Medicine, Hefei, China
| | - Zhihao Rong
- The First School of Clinical Medicine, Anhui University of Chinese Medicine, Hefei, China
| | - Leiyu Yu
- The First School of Clinical Medicine, Anhui University of Chinese Medicine, Hefei, China
| | - Wanting Liu
- The First School of Clinical Medicine, Anhui University of Chinese Medicine, Hefei, China
| | - Qiuju Xue
- The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
| | - Min Ye
- The First School of Clinical Medicine, Anhui University of Chinese Medicine, Hefei, China
| | - Jinying Yang
- Laboratory Center for Information Science, University of Science and Technology of China, Hefei, China
| | - Bensheng Qiu
- Medical Imaging Center, Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei, China
| | - Jun Yang
- The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
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Husain FT, Khan RA. Review and Perspective on Brain Bases of Tinnitus. J Assoc Res Otolaryngol 2023; 24:549-562. [PMID: 37919556 PMCID: PMC10752862 DOI: 10.1007/s10162-023-00914-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 10/18/2023] [Indexed: 11/04/2023] Open
Abstract
In advancing our understanding of tinnitus, some of the more impactful contributions in the past two decades have come from human brain imaging studies, specifically the idea of both auditory and extra-auditory neural networks that mediate tinnitus. These networks subserve both the perception of tinnitus and the psychological reaction to chronic, continuous tinnitus. In this article, we review particular studies that report on the nodes and links of such neural networks and their inter-network connections. Innovative neuroimaging tools have contributed significantly to the increased understanding of anatomical and functional connections of attention, emotion-processing, and default mode networks in adults with tinnitus. We differentiate between the neural correlates of tinnitus and those of comorbid hearing loss; surprisingly, tinnitus and hearing loss when they co-occur are not necessarily additive in their impact and, in rare cases, additional tinnitus may act to mitigate the consequences of hearing loss alone on the brain. The scale of tinnitus severity also appears to have an impact on brain networks, with some of the alterations typically attributed to tinnitus reaching significance only in the case of bothersome tinnitus. As we learn more about comorbid conditions of tinnitus, such as depression, anxiety, hyperacusis, or even aging, their contributions to the network-level changes observed in tinnitus will need to be parsed out in a manner similar to what is currently being done for hearing loss or severity. Together, such studies advance our understanding of the heterogeneity of tinnitus and will lead to individualized treatment plans.
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Affiliation(s)
- Fatima T Husain
- Department of Speech and Hearing Science, University of Illinois Urbana-Champaign, 901 S. Sixth Street, Champaign, IL, 61820, USA.
- Neuroscience Program, University of Illinois Urbana-Champaign, 2355/57 Beckman Institute, 405 North Mathews Avenue, Urbana, IL, 61801, USA.
- The Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL, 61801, USA.
| | - Rafay A Khan
- Neuroscience Program, University of Illinois Urbana-Champaign, 2355/57 Beckman Institute, 405 North Mathews Avenue, Urbana, IL, 61801, USA
- The Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL, 61801, USA
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Salvari V, Korth D, Paraskevopoulos E, Wollbrink A, Ivansic D, Guntinas-Lichius O, Klingner C, Pantev C, Dobel C. Tinnitus-frequency specific activity and connectivity: A MEG study. Neuroimage Clin 2023; 38:103379. [PMID: 36933347 PMCID: PMC10031544 DOI: 10.1016/j.nicl.2023.103379] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 03/08/2023] [Accepted: 03/09/2023] [Indexed: 03/15/2023]
Abstract
Tinnitus pathophysiology has been associated with an atypical cortical network that involves functional changes in auditory and non-auditory areas. Numerous resting-state studies have replicated a tinnitus brain network to be significantly different from healthy-controls. Yet it is still unknown whether the cortical reorganization is attributed to the tinnitus frequency specifically or if it is frequency-irrelevant. Employing magnetoencephalography (MEG), the current study aimed to identify frequency-specific activity patterns by using an individual tinnitus tone (TT) and a 500 Hz-control tone (CT) as auditory stimuli, across 54 tinnitus patients. MEG data were analyzed in a data-driven approach employing a whole-head model in source space and in sources' functional connectivity. Compared to the CT, the event related source space analysis revealed a statistically significant response to TT involving fronto-parietal regions. The CT mainly involved typical auditory activation-related regions. A comparison of the cortical responses to a healthy control group that underwent the same paradigm rejected the alternative interpretation that the frequency-specific activation differences were due to the higher frequency of the TT. Overall, the results suggest frequency-specificity of tinnitus-related cortical patterns. In line with previous studies, we demonstrated a tinnitus-frequency specific network comprising left fronto-temporal, fronto-parietal and tempo-parietal junctions.
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Affiliation(s)
- Vasiliki Salvari
- Institute for Biomagnetism and Biosignalanalysis, University of Münster, P.C. D-48149, Münster, Germany
| | - Daniela Korth
- Department of Otorhinolaryngology, Jena University Hospital, Friedrich-Schiller-University of Jena, P.C. D-07747 Jena, Germany
| | - Evangelos Paraskevopoulos
- School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, P.C. 54124 Thessaloniki, Greece; Department of Psychology, University of Cyprus, P.C. CY 1678, Nicosia, Cyprus
| | - Andreas Wollbrink
- Institute for Biomagnetism and Biosignalanalysis, University of Münster, P.C. D-48149, Münster, Germany
| | - Daniela Ivansic
- Department of Otorhinolaryngology, Jena University Hospital, Friedrich-Schiller-University of Jena, P.C. D-07747 Jena, Germany
| | - Orlando Guntinas-Lichius
- Department of Otorhinolaryngology, Jena University Hospital, Friedrich-Schiller-University of Jena, P.C. D-07747 Jena, Germany
| | - Carsten Klingner
- Department of Neurology, Jena University Hospital, Friedrich-Schiller-University of Jena, D-07747 Jena Germany
| | - Christo Pantev
- Institute for Biomagnetism and Biosignalanalysis, University of Münster, P.C. D-48149, Münster, Germany
| | - Christian Dobel
- Department of Otorhinolaryngology, Jena University Hospital, Friedrich-Schiller-University of Jena, P.C. D-07747 Jena, Germany
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Searchfield GD, Sanders PJ. A randomized single-blind controlled trial of a prototype digital polytherapeutic for tinnitus. Front Neurol 2022; 13:958730. [PMID: 35989940 PMCID: PMC9389120 DOI: 10.3389/fneur.2022.958730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 07/13/2022] [Indexed: 11/13/2022] Open
Abstract
Objective This randomized single-blind controlled trial tested the hypothesis that a prototype digital therapeutic developed to provide goal-based counseling with personalized passive and active game-based sound therapy would provide superior tinnitus outcomes, and similar usability, to a popular passive sound therapy app over a 12 week trial period. Methods The digital therapeutic consisted of an app for iPhone or Android smartphone, Bluetooth bone conduction headphones, neck pillow speaker, and a cloud-based clinician dashboard to enable messaging and app personalization. The control app was a popular self-help passive sound therapy app called White Noise Lite (WN). The primary outcome measure was clinically meaningful change in Tinnitus Functional Index (TFI) between baseline and 12 weeks of therapy. Secondary tinnitus measures were the TFI total score and subscales across sessions, rating scales and the Client Oriented Scale of Improvement in Tinnitus (COSIT). Usability of the US and WN interventions were assessed using the System Usability Scale (SUS) and the mHealth App Usability Questionnaire (MAUQ). Ninety-eight participants who were smartphone app users and had chronic moderate-severe tinnitus (>6 months, TFI score > 40) were enrolled and were randomly allocated to one of the intervention groups. Thirty-one participants in the USL group and 30 in the WN group completed 12 weeks of trial. Results Mean changes in TFI for the USL group at 6 (16.36, SD 17.96) and 12 weeks (17.83 points, SD 19.87) were clinically meaningful (>13 points reduction), the mean change in WN scores were not clinically meaningful (6 weeks 10.77, SD 18.53; 12 weeks 10.12 points, SD 21.36). A statistically higher proportion of USL participants achieved meaningful TFI change at 6 weeks (55%) and 12 weeks (65%) than the WN group at 6 weeks (33%) and 12 weeks (43%). Mean TFI, rating and COSIT scores favored the US group but were not statistically different from WN. Usability measures were similar for both groups. Conclusions The USL group demonstrated a higher proportion of responders than the WN group. The usability of the USL therapeutic was similar to the established WN app. The digital polytherapeutic demonstrated significant benefit for tinnitus reduction supporting further development.
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Affiliation(s)
- Grant D. Searchfield
- Section of Audiology, The University of Auckland, Auckland, New Zealand
- Eisdell Moore Centre, The University of Auckland, Auckland, New Zealand
- *Correspondence: Grant D. Searchfield
| | - Philip J. Sanders
- Section of Audiology, The University of Auckland, Auckland, New Zealand
- Eisdell Moore Centre, The University of Auckland, Auckland, New Zealand
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Husain FT, Khan RA, Tai Y, Shahsavarani S. Evaluating the Efficacy of a Smartphone App for Tinnitus Relief Using Behavioral and Brain Imaging Measures. Am J Audiol 2022; 31:633-645. [PMID: 35759574 DOI: 10.1044/2022_aja-21-00170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
PURPOSE In this exploratory, open-label study, we used behavioral and brain imaging measures to assess the effectiveness of a smartphone application (ReSound Relief app), which aims to help reduce tinnitus-related distress. METHOD Fourteen participants with a wide range of tinnitus-related symptoms and who were not currently undergoing any external treatment participated. They completed the 6-month study and reported different levels of engagement with the app. RESULTS Across a range of tinnitus questionnaires, most participants showed either no change or decrease in tinnitus handicap. Resting-state and task-based functional magnetic resonance imaging (fMRI) data were collected at baseline and the end of the study. Resting-state fMRI of 12 participants revealed alterations in interregional connectivity of default mode, salience, emotion, auditory, and visual processing networks at the end of the intervention period compared to baseline. Ratings of affective sounds (as pleasant, neutral, or unpleasant) were assessed using fMRI, and comparison after 6 months of app usage revealed reduced activity in the left superior temporal gyrus (secondary auditory cortex), right superior occipital gyrus, and left posterior cingulate cortex. Our findings were not significant at a false discovery rate level of p < .05. CONCLUSIONS The reported changes were not significant, possibly due to the small sample size, heterogeneity of the tinnitus handicap among subjects at the start of the project, and the length of the intervention period. Nevertheless, this study underscores the ease of usage of the app and the potential use of brain imaging to assess changes due to a passive, self-administered intervention for individuals with varying levels of tinnitus severity.
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Affiliation(s)
- Fatima T Husain
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana.,Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Champaign.,Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana
| | - Rafay A Khan
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana.,Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana
| | - Yihsin Tai
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana.,Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Champaign.,Department of Speech Pathology and Audiology, Ball State University, Muncie, IN
| | - Somayeh Shahsavarani
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana.,Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Champaign.,Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana.,Mortimer B. Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY
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6
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Jaroszynski C, Job A, Jedynak M, David O, Delon-Martin C. Tinnitus Perception in Light of a Parietal Operculo-Insular Involvement: A Review. Brain Sci 2022; 12:334. [PMID: 35326290 PMCID: PMC8946618 DOI: 10.3390/brainsci12030334] [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: 01/18/2022] [Revised: 02/21/2022] [Accepted: 02/24/2022] [Indexed: 12/07/2022] Open
Abstract
In tinnitus literature, researchers have increasingly been advocating for a clearer distinction between tinnitus perception and tinnitus-related distress. In non-bothersome tinnitus, the perception itself can be more specifically investigated: this has provided a body of evidence, based on resting-state and activation fMRI protocols, highlighting the involvement of regions outside the conventional auditory areas, such as the right parietal operculum. Here, we aim to conduct a review of available investigations of the human parietal operculo-insular subregions conducted at the microscopic, mesoscopic, and macroscopic scales arguing in favor of an auditory-somatosensory cross-talk. Both the previous literature and new results on functional connectivity derived from cortico-cortical evoked potentials show that these subregions present a dense tissue of interconnections and a strong connectivity with auditory and somatosensory areas in the healthy brain. Disrupted integration processes between these modalities may thus result in erroneous perceptions, such as tinnitus. More precisely, we highlight the role of a subregion of the right parietal operculum, known as OP3 according to the Jülich atlas, in the integration of auditory and somatosensory representation of the orofacial muscles in the healthy population. We further discuss how a dysfunction of these muscles could induce hyperactivity in the OP3. The evidence of direct electrical stimulation of this area eliciting auditory hallucinations further suggests its involvement in tinnitus perception. Finally, a small number of neuroimaging studies of therapeutic interventions for tinnitus provide additional evidence of right parietal operculum involvement.
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Affiliation(s)
- Chloé Jaroszynski
- University Grenoble Alpes, Inserm, U1216, Grenoble Institut Neurosciences, 38000 Grenoble, France; (C.J.); (M.J.); (O.D.)
| | - Agnès Job
- Institut de Recherche Biomédicale des Armées, IRBA, 91220 Brétigny-sur-Orge, France;
| | - Maciej Jedynak
- University Grenoble Alpes, Inserm, U1216, Grenoble Institut Neurosciences, 38000 Grenoble, France; (C.J.); (M.J.); (O.D.)
- Aix Marseille University, Inserm, INS, Inst Neurosci Syst, 13005 Marseille, France
| | - Olivier David
- University Grenoble Alpes, Inserm, U1216, Grenoble Institut Neurosciences, 38000 Grenoble, France; (C.J.); (M.J.); (O.D.)
- Aix Marseille University, Inserm, INS, Inst Neurosci Syst, 13005 Marseille, France
| | - Chantal Delon-Martin
- University Grenoble Alpes, Inserm, U1216, Grenoble Institut Neurosciences, 38000 Grenoble, France; (C.J.); (M.J.); (O.D.)
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Evaluating the efficacy of hearing aids for tinnitus therapy - A Positron emission tomography study. Brain Res 2022; 1775:147728. [PMID: 34793755 DOI: 10.1016/j.brainres.2021.147728] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 12/26/2022]
Abstract
Brain imaging studies have revealed neural changes in chronic tinnitus patients that are not restricted to auditory brain areas; rather, the engagement of limbic system structures, attention and memory networks are has been noted. Hearing aids (HA) provide compensation for comorbid hearing loss and may decrease tinnitus-related perception and annoyance. Using resting state positron emission tomography our goal was to analyze metabolic and functional brain changes after six months of effective HA use by patients with chronic tinnitus and associated sensorineural hearing loss. 33 age and hearing loss matched participants with mild/moderate hearing loss were enrolled in this study: 19 with tinnitus, and 14 without tinnitus. Participants with tinnitus of more than 6 months with moderate/severe Tinnitus Handicap Inventory (THI) and Visual Analogue Scale (VAS) scores composed the tinnitus group. A full factorial 2X2 ANOVA was conducted for imaging analysis, with group (tinnitus and controls) and time point (pre-intervention and post-intervention) as factors. Six months after HA fitting, tinnitus scores reduced statistically and clinically. Analysis revealed increased glycolytic metabolism in the left orbitofrontal cortex, right temporal lobe and right hippocampus, and reduced glycolytic metabolism in the left cerebellum and inferior parietal lobe within the tinnitus group. The hearing loss control group showed no significant metabolic changes in the analysis. Parsing out the contribution of tinnitus independent of hearing loss, allowed us to identify areas implicated in declines in tinnitus handicap as a result of the intervention. Brain regions implicated in the present study may be part of chronic tinnitus-specific network.
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Song A, Cho GW, Vijayakumar KA, Moon C, Ang MJ, Kim J, Park I, Jang CH. Neuroprotective Effect of Valproic Acid on Salicylate-Induced Tinnitus. Int J Mol Sci 2021; 23:ijms23010023. [PMID: 35008469 PMCID: PMC8744959 DOI: 10.3390/ijms23010023] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/09/2021] [Accepted: 12/16/2021] [Indexed: 11/23/2022] Open
Abstract
High-dose salicylate induces temporary moderate hearing loss and the perception of a high-pitched tinnitus in humans and animals. Previous studies demonstrated that high doses of salicylate increase N-methyl-d-aspartate (NMDA) receptor levels, resulting in a rise in Ca2+ influx and induction of excitotoxicity. Glutamate excitotoxicity is associated with failure in the maintenance of calcium homeostasis, mitochondrial dysfunction, and production of reactive oxygen species (ROS). Valproic acid (VPA) is widely used for the management of bipolar disorder, epilepsy, and migraine headaches, and is known to regulate NMDA receptor activity. In this study, we examined the beneficial effects of VPA in a salicylate-induced tinnitus model in vitro and in vivo. Cells were pretreated with VPA followed by salicylate treatment. The expression levels of NMDA receptor subunit NR2B, phosphorylated cAMP response element-binding protein—an apoptosis marker, and intracellular levels of ROS were measured using several biochemical techniques. We observed increased expression of NR2B and its related genes TNFα and ARC, increased intracellular ROS levels, and induced expression of cleaved caspase-3. These salicylate-induced changes were attenuated in the neuronal cell line SH-SY5Y and rat cortical neurons after VPA pretreatment. Together, these results provide evidence of the beneficial effects of VPA in a salicylate-induced temporary hearing loss and tinnitus model.
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Affiliation(s)
- Anji Song
- Department of Biology, College of Natural Science, Chosun University, Gwangju 61452, Korea; (A.S.); (G.-W.C.); (K.A.V.)
- BK21 FOUR Education Research Group for Age-Associated Disorder Control Technology, Department of Integrative Biological Science, Chosun University, Gwangju 61452, Korea
| | - Gwang-Won Cho
- Department of Biology, College of Natural Science, Chosun University, Gwangju 61452, Korea; (A.S.); (G.-W.C.); (K.A.V.)
- BK21 FOUR Education Research Group for Age-Associated Disorder Control Technology, Department of Integrative Biological Science, Chosun University, Gwangju 61452, Korea
| | - Karthikeyan A. Vijayakumar
- Department of Biology, College of Natural Science, Chosun University, Gwangju 61452, Korea; (A.S.); (G.-W.C.); (K.A.V.)
- BK21 FOUR Education Research Group for Age-Associated Disorder Control Technology, Department of Integrative Biological Science, Chosun University, Gwangju 61452, Korea
| | - Changjong Moon
- Department of Veterinary Anatomy, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju 61186, Korea;
- Correspondence: (C.M.); (C.H.J.); Tel.: +82-62-220-6774 (C.H.J.)
| | - Mary Jasmin Ang
- Department of Veterinary Anatomy, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju 61186, Korea;
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju 61469, Korea;
| | - Ilyong Park
- Department of Biomedical Engineering, School of Medicine, Dankook University, Cheonan 31116, Korea;
| | - Chul Ho Jang
- Department of Otolaryngology, Chonnam National University Medical School, Gwangju 61469, Korea
- Correspondence: (C.M.); (C.H.J.); Tel.: +82-62-220-6774 (C.H.J.)
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Khan RA, Sutton BP, Tai Y, Schmidt SA, Shahsavarani S, Husain FT. A large-scale diffusion imaging study of tinnitus and hearing loss. Sci Rep 2021; 11:23395. [PMID: 34862447 PMCID: PMC8642521 DOI: 10.1038/s41598-021-02908-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 11/16/2021] [Indexed: 11/09/2022] Open
Abstract
Subjective, chronic tinnitus, the perception of sound in the absence of an external source, commonly occurs with many comorbidities, making it a difficult condition to study. Hearing loss, often believed to be the driver for tinnitus, is perhaps one of the most significant comorbidities. In the present study, white matter correlates of tinnitus and hearing loss were examined. Diffusion imaging data were collected from 96 participants-43 with tinnitus and hearing loss (TINHL), 17 with tinnitus and normal hearing thresholds (TINNH), 17 controls with hearing loss (CONHL) and 19 controls with normal hearing (CONNH). Fractional anisotropy (FA), mean diffusivity and probabilistic tractography analyses were conducted on the diffusion imaging data. Analyses revealed differences in FA and structural connectivity specific to tinnitus, hearing loss, and both conditions when comorbid, suggesting the existence of tinnitus-specific neural networks. These findings also suggest that age plays an important role in neural plasticity, and thus may account for some of the variability of results in the literature. However, this effect is not seen in tractography results, where a sensitivity analysis revealed that age did not impact measures of network integration or segregation. Based on these results and previously reported findings, we propose an updated model of tinnitus, wherein the internal capsule and corpus callosum play important roles in the evaluation of, and neural plasticity in response to tinnitus.
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Affiliation(s)
- Rafay A Khan
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.,Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Bradley P Sutton
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.,Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Yihsin Tai
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.,Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.,Department of Speech Pathology and Audiology, Ball State University, Muncie, IN, 47303, USA
| | - Sara A Schmidt
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.,Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Somayeh Shahsavarani
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.,Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.,Mortimer B. Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY, 10027, USA
| | - Fatima T Husain
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA. .,Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA. .,Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
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Simoes JP, Daoud E, Shabbir M, Amanat S, Assouly K, Biswas R, Casolani C, Dode A, Enzler F, Jacquemin L, Joergensen M, Kok T, Liyanage N, Lourenco M, Makani P, Mehdi M, Ramadhani AL, Riha C, Santacruz JL, Schiller A, Schoisswohl S, Trpchevska N, Genitsaridi E. Multidisciplinary Tinnitus Research: Challenges and Future Directions From the Perspective of Early Stage Researchers. Front Aging Neurosci 2021; 13:647285. [PMID: 34177549 PMCID: PMC8225955 DOI: 10.3389/fnagi.2021.647285] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 03/19/2021] [Indexed: 12/15/2022] Open
Abstract
Tinnitus can be a burdensome condition on both individual and societal levels. Many aspects of this condition remain elusive, including its underlying mechanisms, ultimately hindering the development of a cure. Interdisciplinary approaches are required to overcome long-established research challenges. This review summarizes current knowledge in various tinnitus-relevant research fields including tinnitus generating mechanisms, heterogeneity, epidemiology, assessment, and treatment development, in an effort to highlight the main challenges and provide suggestions for future research to overcome them. Four common themes across different areas were identified as future research direction: (1) Further establishment of multicenter and multidisciplinary collaborations; (2) Systematic reviews and syntheses of existing knowledge; (3) Standardization of research methods including tinnitus assessment, data acquisition, and data analysis protocols; (4) The design of studies with large sample sizes and the creation of large tinnitus-specific databases that would allow in-depth exploration of tinnitus heterogeneity.
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Affiliation(s)
- Jorge Piano Simoes
- Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
| | - Elza Daoud
- Centre National de la Recherche Scientifique, Aix-Marseille University, Marseille, France
| | - Maryam Shabbir
- Hearing Sciences, Mental Health and Clinical Neurosciences, School of Medicine, University of Nottingham, Nottingham, United Kingdom
| | - Sana Amanat
- Otology & Neurotology Group CTS 495, Department of Genomic Medicine, GENYO - Centre for Genomics and Oncological Research Pfizer/University of Granada/Junta de Andalucía, PTS, Granada, Spain
| | - Kelly Assouly
- Department of Otorhinolaryngology and Head & Neck Surgery, University Medical Center Utrecht, Utrecht, Netherlands
- Department of Clinical and Experimental Neuroscience, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, Netherlands
- Cochlear Technology Centre, Mechelen, Belgium
| | - Roshni Biswas
- Hearing Sciences, Mental Health and Clinical Neurosciences, School of Medicine, University of Nottingham, Nottingham, United Kingdom
- Laboratory of Lifestyle Epidemiology, Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Chiara Casolani
- Hearing Systems, Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
- Oticon A/S, Smoerum, Denmark
- Interacoustics Research Unit, Lyngby, Denmark
| | - Albi Dode
- Institute of Databases and Information Systems, Ulm University, Ulm, Germany
| | - Falco Enzler
- Centre National de la Recherche Scientifique, Aix-Marseille University, Marseille, France
| | - Laure Jacquemin
- Department of Otorhinolaryngology Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium
- Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, Antwerp University, Wilrijk, Belgium
| | - Mie Joergensen
- Hearing Systems, Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
- WS Audiology, Lynge, Denmark
| | - Tori Kok
- Ear Institute, University College London, London, United Kingdom
| | - Nuwan Liyanage
- University of Zurich, Zurich, Switzerland
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Matheus Lourenco
- Experimental Health Psychology, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Netherlands
- Health Psychology Research Group, Faculty of Psychology and Educational Sciences, University of Leuven, Leuven, Belgium
| | - Punitkumar Makani
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
- Graduate School of Medical Sciences (Research School of Behavioral and Cognitive Neurosciences), University of Groningen, Groningen, Netherlands
| | - Muntazir Mehdi
- Institute of Distributed Systems, Ulm University, Ulm, Germany
| | - Anissa L. Ramadhani
- Radiological Sciences, Mental Health and Clinical Neurosciences, School of Medicine, University of Nottingham, Nottingham, United Kingdom
- Sir Peter Mansfield Imaging Centre, School of Medicine, University of Nottingham, Nottingham, United Kingdom
| | - Constanze Riha
- Chair of Neuropsychology, Department of Psychology, University of Zurich, Zurich, Switzerland
| | - Jose Lopez Santacruz
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
- Graduate School of Medical Sciences (Research School of Behavioral and Cognitive Neurosciences), University of Groningen, Groningen, Netherlands
| | - Axel Schiller
- Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
| | - Stefan Schoisswohl
- Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
| | - Natalia Trpchevska
- Department of Physiology and Pharmacology, Experimental Audiology Laboratory, Karolinska Institutet, Stockholm, Sweden
| | - Eleni Genitsaridi
- Hearing Sciences, Mental Health and Clinical Neurosciences, School of Medicine, University of Nottingham, Nottingham, United Kingdom
- Nottingham Biomedical Research Centre, National Institute for Health Research, Nottingham, United Kingdom
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Shahsavarani S, Schmidt SA, Khan RA, Tai Y, Husain FT. Salience, emotion, and attention: The neural networks underlying tinnitus distress revealed using music and rest. Brain Res 2021; 1755:147277. [PMID: 33422540 DOI: 10.1016/j.brainres.2021.147277] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 11/03/2020] [Accepted: 01/02/2021] [Indexed: 12/25/2022]
Abstract
In the present study, we used an innovative music-rest interleaved fMRI paradigm to investigate the neural correlates of tinnitus distress. Tinnitus is a poorly-understood hearing disorder where individuals perceive sounds, in the absence of an external source. Although the great majority of individuals habituate to chronic tinnitus and report few symptoms, a minority report debilitating distress and annoyance. Prior research suggests that a diverse set of brain regions, including the attention, the salience, and the limbic networks, play key roles in mediating both the perception of tinnitus and its impact on the individual; however, evidence of the degree and extent of their involvement has been inconsistent. Here, we minimally modified the conventional resting state fMRI by interleaving it with segments of jazz music. We found that the functional connectivity between a set of brain regions-including cerebellum, precuneus, superior/middle frontal gyrus, and primary visual cortex-and seeds in the dorsal attention network, the salience network, and the amygdala, were effective in fractionating the tinnitus patients into two subgroups, characterized by the severity of tinnitus-related distress. Further, our findings revealed cross-modal modulation of the attention and salience networks by the visual modality during the music segments. On average, the more bothersome the reported tinnitus, the stronger was the exhibited inter-network functional connectivity. This study substantiates the essential role of the attention, salience, and limbic networks in tinnitus habituation, and suggests modulation of the attention and salience networks across the auditory and visual modalities as a possible compensatory mechanism for bothersome tinnitus.
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Affiliation(s)
- Somayeh Shahsavarani
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Champaign, IL 61801, United States; Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Champaign, IL 61820, United States; Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign, IL 61801, United States
| | - Sara A Schmidt
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Champaign, IL 61801, United States; Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign, IL 61801, United States
| | - Rafay A Khan
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Champaign, IL 61801, United States; Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign, IL 61801, United States
| | - Yihsin Tai
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Champaign, IL 61801, United States; Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Champaign, IL 61820, United States
| | - Fatima T Husain
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Champaign, IL 61801, United States; Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Champaign, IL 61820, United States; Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign, IL 61801, United States.
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13
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Zimmerman BJ, Schmidt SA, Khan RA, Tai Y, Shahsavarani S, Husain FT. Decreased resting perfusion in precuneus and posterior cingulate cortex predicts tinnitus severity. CURRENT RESEARCH IN NEUROBIOLOGY 2021; 2:100010. [PMID: 36246506 PMCID: PMC9559103 DOI: 10.1016/j.crneur.2021.100010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 02/23/2021] [Accepted: 03/24/2021] [Indexed: 11/19/2022] Open
Abstract
Functional magnetic resonance imaging has been increasingly used to understand the mechanisms involved in subjective tinnitus; however, researchers have struggled to reach a consensus about a primary mechanistic model to explain tinnitus. While many studies have used functional connectivity of the BOLD signal to understand how patterns of activity change with tinnitus severity, there is much less research on whether there are differences in more fundamental physiology, including cerebral blood flow, which may help inform the BOLD measures. Here, arterial spin labeling was used to measure perfusion in four regions-of-interest, guided by current models of tinnitus, in a sample of 60 tinnitus patients and 31 control subjects. We found global reductions in cerebral perfusion in tinnitus compared with controls. Additionally, we observed a significant negative correlation between tinnitus severity and perfusion. These results demonstrate that examining perfusion from the whole brain may present a complementary tool for studying tinnitus. More research will help better understand the physiology underlying these differences in perfusion. Global cerebral blood flow is reduced in tinnitus. Tinnitus severity is negatively correlated with cerebral blood flow globally. Tinnitus severity is negatively correlated with cerebral blood flow in the precuneus and posterior cingulate cortex. Hearing loss predicted reduced cerebral blood flow in the precuneus in participants without tinnitus. The presence or absence of hearing loss did not affect the correlation between tinnitus severity and cerebral blood flow.
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Affiliation(s)
- Benjamin J. Zimmerman
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Sara A. Schmidt
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Rafay A. Khan
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Yihsin Tai
- Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Department of Speech Pathology and Audiology, Ball State University, Muncie, IN, USA
| | - Somayeh Shahsavarani
- Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
- Mortimer B. Zuckerman Institute for Mind Brain and Behavior, Columbia University, New York, NY, USA
| | - Fatima T. Husain
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Corresponding author. Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
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14
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Khan RA, Husain FT. Tinnitus and cognition: Can load theory help us refine our understanding? Laryngoscope Investig Otolaryngol 2020; 5:1197-1204. [PMID: 33364412 PMCID: PMC7752071 DOI: 10.1002/lio2.501] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/30/2020] [Accepted: 11/05/2020] [Indexed: 01/02/2023] Open
Abstract
Objective: Tinnitus has been shown to be associated with specific cognitive deficits. Contemporary models of tinnitus, based primarily on human behavior, emphasize the influence of the cognitive response to tinnitus in tinnitus manifestation and level of associated annoyance. The models and hypotheses proposed thus far have (a) focused on the cognitive response to the onset of tinnitus, and not necessarily focused on the cognitive consequences of established chronic tinnitus, and (b) failed to dissociate the contributions of cognitive and perceptual load in their theories. Load theory states that we have a limited capacity of neural resources that can be used to process internal and external stimuli. This theory is differentially applied to perceptual load, which refers to the neural resources engaged in the processing of sensory stimuli in our environment, and cognitive load, which refers to the occupation of a more central resource that is involved in higher-level processing, such as stimulus discrimination, decision making, and working memory processing. Methods: A focused review was conducted on behavioral and brain-imaging studies examining cognitive deficits in tinnitus, in an attempt to reexamine the findings in a load theory framework. Results: Findings of these studies are discussed in the context of load theory, and a novel model for understanding these findings is proposed. Conclusion: We believe the incorporation of load theory into models of tinnitus may advance understanding of the cognitive impact of tinnitus and lead to better management of tinnitus.
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Affiliation(s)
- Rafay A. Khan
- Neuroscience ProgramUniversity of Illinois at Urbana—ChampaignChampaignIllinoisUSA
- Beckman Institute for Advanced Science and TechnologyUniversity of Illinois at Urbana—ChampaignChampaignIllinoisUSA
| | - Fatima T. Husain
- Neuroscience ProgramUniversity of Illinois at Urbana—ChampaignChampaignIllinoisUSA
- Beckman Institute for Advanced Science and TechnologyUniversity of Illinois at Urbana—ChampaignChampaignIllinoisUSA
- Department of Speech and Hearing ScienceUniversity of Illinois at Urbana—ChampaignChampaignIllinoisUSA
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Abstract
This article reviews the use of human neuroimaging for chronic subjective tinnitus. Evidence-based guidance on the clinical use of imaging to identify relevant auditory lesions when evaluating tinnitus patients is given. After introducing the anatomy and imaging modalities most pertinent to the neuroscience of tinnitus, the article reviews tinnitus-associated alterations in key auditory and nonauditory networks in the central nervous system. Emphasis is placed on how these findings support proposed models of tinnitus and how this line of investigation is relevant to practicing clinicians.
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Affiliation(s)
- Meredith E Adams
- Department of Otolaryngology-Head and Neck Surgery, University of Minnesota, 420 Delaware Street Southeast, MMC 395, Minneapolis, MN 55455, USA.
| | - Tina C Huang
- Department of Otolaryngology-Head and Neck Surgery, University of Minnesota, 420 Delaware Street Southeast, MMC 395, Minneapolis, MN 55455, USA
| | - Srikantan Nagarajan
- Department of Radiology and Biomedical Imaging, University of California San Francisco, 513 Parnassus Avenue S362, San Francisco, CA 94143-0628, USA; Department of Otolaryngology-Head and Neck Surgery, University of California San Francisco, 2233 Post Street Suite 341, San Francisco, CA 94115-1225, USA
| | - Steven W Cheung
- Department of Otolaryngology-Head and Neck Surgery, University of California San Francisco, 2233 Post Street Suite 341, San Francisco, CA 94115-1225, USA
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Abstract
Tinnitus is the perception of a self-generated sound and an individual's psychological reaction to it. This article discusses one element of the reaction: depression. Epidemiologic studies have noted high comorbidity of tinnitus and depression. Findings from recent brain imaging studies have noted shared neural networks in depression and severe tinnitus. As further evidence of this overlaps, antidepressants, counseling, and psychology-based approaches have been used to treat tinnitus. Multifaceted treatment strategies, using both sound-based therapies (not discussed in this paper) and psychology-based approaches, are a necessary part of the treatment options, with the aim of enhancing self-efficacy in patients with tinnitus.
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Affiliation(s)
- Fatima T Husain
- Department of Speech and Hearing Science, The Neuroscience Program, The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 901 South Sixth Street, Champaign, IL 61820, USA.
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Persic D, Thomas ME, Pelekanos V, Ryugo DK, Takesian AE, Krumbholz K, Pyott SJ. Regulation of auditory plasticity during critical periods and following hearing loss. Hear Res 2020; 397:107976. [PMID: 32591097 PMCID: PMC8546402 DOI: 10.1016/j.heares.2020.107976] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 03/15/2020] [Accepted: 04/14/2020] [Indexed: 02/07/2023]
Abstract
Sensory input has profound effects on neuronal organization and sensory maps in the brain. The mechanisms regulating plasticity of the auditory pathway have been revealed by examining the consequences of altered auditory input during both developmental critical periods—when plasticity facilitates the optimization of neural circuits in concert with the external environment—and in adulthood—when hearing loss is linked to the generation of tinnitus. In this review, we summarize research identifying the molecular, cellular, and circuit-level mechanisms regulating neuronal organization and tonotopic map plasticity during developmental critical periods and in adulthood. These mechanisms are shared in both the juvenile and adult brain and along the length of the auditory pathway, where they serve to regulate disinhibitory networks, synaptic structure and function, as well as structural barriers to plasticity. Regulation of plasticity also involves both neuromodulatory circuits, which link plasticity with learning and attention, as well as ascending and descending auditory circuits, which link the auditory cortex and lower structures. Further work identifying the interplay of molecular and cellular mechanisms associating hearing loss-induced plasticity with tinnitus will continue to advance our understanding of this disorder and lead to new approaches to its treatment. During CPs, brain plasticity is enhanced and sensitive to acoustic experience. Enhanced plasticity can be reinstated in the adult brain following hearing loss. Molecular, cellular, and circuit-level mechanisms regulate CP and adult plasticity. Plasticity resulting from hearing loss may contribute to the emergence of tinnitus. Modifying plasticity in the adult brain may offer new treatments for tinnitus.
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Affiliation(s)
- Dora Persic
- University of Groningen, University Medical Center Groningen, Groningen, Department of Otorhinolaryngology and Head/Neck Surgery, 9713, GZ, Groningen, the Netherlands
| | - Maryse E Thomas
- Eaton-Peabody Laboratories, Massachusetts Eye & Ear and Department of Otorhinolaryngology and Head/Neck Surgery, Harvard Medical School, Boston, MA, USA
| | - Vassilis Pelekanos
- Hearing Sciences, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, University Park, Nottingham, UK
| | - David K Ryugo
- Hearing Research, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia; School of Medical Sciences, UNSW Sydney, Sydney, NSW, 2052, Australia; Department of Otolaryngology, Head, Neck & Skull Base Surgery, St Vincent's Hospital, Sydney, NSW, 2010, Australia
| | - Anne E Takesian
- Eaton-Peabody Laboratories, Massachusetts Eye & Ear and Department of Otorhinolaryngology and Head/Neck Surgery, Harvard Medical School, Boston, MA, USA
| | - Katrin Krumbholz
- Hearing Sciences, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, University Park, Nottingham, UK
| | - Sonja J Pyott
- University of Groningen, University Medical Center Groningen, Groningen, Department of Otorhinolaryngology and Head/Neck Surgery, 9713, GZ, Groningen, the Netherlands.
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Shahsavarani S, Abraham IT, Zimmerman BJ, Baryshnikov YM, Husain FT. Comparing Cyclicity Analysis With Pre-established Functional Connectivity Methods to Identify Individuals and Subject Groups Using Resting State fMRI. Front Comput Neurosci 2020; 13:94. [PMID: 32038211 PMCID: PMC6984040 DOI: 10.3389/fncom.2019.00094] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 12/23/2019] [Indexed: 01/06/2023] Open
Abstract
The resting state fMRI time series appears to have cyclic patterns, which indicates presence of cyclic interactions between different brain regions. Such interactions are not easily captured by pre-established resting state functional connectivity methods including zero-lag correlation, lagged correlation, and dynamic time warping distance. These methods formulate the functional interaction between different brain regions as similar temporal patterns within the time series. To use information related to temporal ordering, cyclicity analysis has been introduced to capture pairwise interactions between multiple time series. In this study, we compared the efficacy of cyclicity analysis with aforementioned similarity-based techniques in representing individual-level and group-level information. Additionally, we investigated how filtering and global signal regression interacted with these techniques. We obtained and analyzed fMRI data from patients with tinnitus and neurotypical controls at two different days, a week apart. For both patient and control groups, we found that the features generated by cyclicity and correlation (zero-lag and lagged) analyses were more reliable than the features generated by dynamic time warping distance in identifying individuals across visits. The reliability of all features, except those generated by dynamic time warping, improved as the global signal was regressed. Nevertheless, removing fluctuations >0.1 Hz deteriorated the reliability of all features. These observations underscore the importance of choosing appropriate preprocessing steps while evaluating different analytical methods in describing resting state functional interactivity. Further, using different machine learning techniques including support vector machines, discriminant analyses, and convolutional neural networks, our results revealed that the manifestation of the group-level information within all features was not sufficient enough to dissociate tinnitus patients from controls with high sensitivity and specificity. This necessitates further investigation regarding the representation of group-level information within different features to better identify tinnitus-related alternation in the functional organization of the brain. Our study adds to the growing body of research on developing diagnostic tools to identify neurological disorders, such as tinnitus, using resting state fMRI data.
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Affiliation(s)
- Somayeh Shahsavarani
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Champaign, IL, United States.,Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Champaign, IL, United States.,Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign, IL, United States
| | - Ivan T Abraham
- Department of Electrical & Computer Engineering, University of Illinois at Urbana-Champaign, Champaign, IL, United States
| | - Benjamin J Zimmerman
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Champaign, IL, United States.,Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Champaign, IL, United States.,Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign, IL, United States
| | - Yuliy M Baryshnikov
- Department of Electrical & Computer Engineering, University of Illinois at Urbana-Champaign, Champaign, IL, United States.,Department of Mathematics, University of Illinois at Urbana-Champaign, Champaign, IL, United States
| | - Fatima T Husain
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Champaign, IL, United States.,Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Champaign, IL, United States.,Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign, IL, United States
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