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https://www.readbyqxmd.com/read/28579955/10-hz-amplitude-modulated-sounds-induce-short-term-tinnitus-suppression
#1
Patrick Neff, Jakob Michels, Martin Meyer, Martin Schecklmann, Berthold Langguth, Winfried Schlee
Objectives: Acoustic stimulation or sound therapy is proposed as a main treatment option for chronic subjective tinnitus. To further probe the field of acoustic stimulations for tinnitus therapy, this exploratory study compared 10 Hz amplitude modulated (AM) sounds (two pure tones, noise, music, and frequency modulated (FM) sounds) and unmodulated sounds (pure tone, noise) regarding their temporary suppression of tinnitus loudness. First, it was hypothesized that modulated sounds elicit larger temporary loudness suppression (residual inhibition) than unmodulated sounds...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28471721/comparison-of-treatment-outcomes-between-10-and-20-eeg-electrode-location-system-guided-and-neuronavigation-guided-repetitive-transcranial-magnetic-stimulation-in-chronic-tinnitus-patients-and-target-localization-in-the-asian-brain
#2
Tae-Soo Noh, Yoon-Chan Rah, Jeong Sug Kyong, June Sic Kim, Moo Kyun Park, Jun Ho Lee, Seung Ha Oh, Chun Kee Chung, Myung-Whan Suh
OBJECTIVE: rTMS is a non-invasive method that applies a brief magnetic pulse to the cortex and is regarded as a possible therapeutic method for tinnitus control. However, it remains unclear whether the rTMS treatment effect would be the same in tinnitus patients receiving the 10-20 EEG-based target localization as in those receiving imaging-based neuronavigation target localization. METHODS: We compared the treatment outcome of the 10-20 EEG-guided rTMS (Group 1) with that of the neuronavigation-guided rTMS (Group 2)...
May 4, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28382614/migraine-with-multiple-sensory-auras
#3
Nicodemus E Oey, Yew Long Lo
Migraine auras are typically visual in nature but can manifest as disturbances in somatosensory, auditory, and olfactory senses. Reports of multiple sensory auras are rare in the literature, but their existence may offer novel insights into the pathogenesis of this highly common yet complex neurological condition. Here we report a case of multiple sensory auras involving somatosensory, auditory, and olfactory disturbances in a patient with migraine without visual manifestations. A 45-year-old woman with a 20-year history of migrainous headaches presented with complaints of rightsided facial and hand numbness and paraesthesia...
December 15, 2016: Acta Neurologica Taiwanica
https://www.readbyqxmd.com/read/28315312/eeg-oscillatory-power-dissociates-between-distress-and-depression-related-psychopathology-in-subjective-tinnitus
#4
Martin Meyer, Patrick Neff, Angelina Grest, Colette Hemsley, Steffi Weidt, Tobias Kleinjung
Recent research has used source estimation approaches to identify spatially distinct neural configurations in individuals with chronic, subjective tinnitus (TI). The results of these studies are often heterogeneous, a fact which may be partly explained by an inherent heterogeneity of/in the TI population and partly by the applied EEG data analysis procedure and EEG hardware. Hence this study was performed to re-enact a formerly published study (Joos et al., 2012) to better understand the reason for differences and overlap between studies from different labs...
March 14, 2017: Brain Research
https://www.readbyqxmd.com/read/28260394/evidence-for-behaviorally-segregated-spatiotemporally-overlapping-subnetworks-in-phantom-sound-perception
#5
Anusha Mohan, Nicole Moreno, Jae-Jin Song, Dirk De Ridder, Sven Vanneste
One of the most intriguing questions in neuroscience is to understand the mechanism of information transfer between different brain areas. Recently, network theory has gained traction and is at the forefront of providing a possible explanation to not only the mechanism of information transfer but also in the identification of different neuropathologies. The perception of a phantom ringing in the ear called tinnitus, similar to other neuropathologies, has been shown to be accompanied by aberrant functional connectivity between different brain areas...
April 2017: Brain Connectivity
https://www.readbyqxmd.com/read/28243221/acoustic-coordinated-reset-neuromodulation-a-systematic-review-of-a-novel-therapy-for-tinnitus
#6
REVIEW
Marie Wegger, Therese Ovesen, Dalia Gustaityte Larsen
BACKGROUND: There are growing technological advances in the development of sound-based methods for the treatment of tinnitus. Most of these methods intend to affect the speculated underlying neurological causes of tinnitus. Acoustic coordinated reset (CR) neuromodulation is one of them. A novel method that as of yet seems inadequately reviewed. PURPOSE: To evaluate the current evidence on acoustic CR neuromodulation as a method for the treatment of tinnitus and to assess whether the method can be implemented in daily clinical practice...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/27766069/an-increase-in-alpha-band-frequency-in-resting-state-eeg-after-electrical-stimulation-of-the-ear-in-tinnitus-patients-a-pilot-study
#7
Marzena Mielczarek, Joanna Michalska, Katarzyna Polatyńska, Jurek Olszewski
In our clinic invasive transtympanal promontory positive DC stimulations were first used, with a success rate of 42%. However, non-invasive hydrotransmissive negative DC stimulations are now favored, with improvement being obtained in 37.8% directly after the treatment, and 51.3% in a follow up 1 month after treatment. The further improvement after 1 month may be due to neuroplastic changes at central level as a result of altered peripheral input. The aim of the study was to determine how/whether a single electrical stimulation of the ear influences cortical activity, and whether changes observed in tinnitus after electrical stimulation are associated with any changes in cortical activity recorded in EEG...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27725178/top-down-and-bottom-up-neurodynamic-evidence-in-patients-with-tinnitus
#8
Sung Kwang Hong, Sejik Park, Min-Hee Ahn, Byoung-Kyong Min
Although a peripheral auditory (bottom-up) deficit is an essential prerequisite for the generation of tinnitus, central cognitive (top-down) impairment has also been shown to be an inherent neuropathological mechanism. Using an auditory oddball paradigm (for top-down analyses) and a passive listening paradigm (for bottom-up analyses) while recording electroencephalograms (EEGs), we investigated whether top-down or bottom-up components were more critical in the neuropathology of tinnitus, independent of peripheral hearing loss...
December 2016: Hearing Research
https://www.readbyqxmd.com/read/27103139/robustness-and-dynamicity-of-functional-networks-in-phantom-sound
#9
Anusha Mohan, Dirk De Ridder, Sven Vanneste
Phantom sound perception is the perception of a sound in the absence of a corresponding external sound source. It is a common symptom for which no treatment exists. Gaining a better understanding of its pathophysiology by applying network science might help in identifying targets in the brain for neuromodulatory approaches to treat this elusive symptom. Brain networks are commonly organized as functional modules which have a densely connected core network coupled to a communally-organized peripheral network...
February 1, 2017: NeuroImage
https://www.readbyqxmd.com/read/27016059/the-neural-correlates-of-cognitive-dysfunction-in-phantom-sounds
#10
Sven Vanneste, Margriet Faber, Berthold Langguth, Dirk De Ridder
Tinnitus is an auditory phantom percept with a tone, hissing or buzzing sound in the absence of an objective physical sound source. It has been shown that tinnitus can lead to emotional and cognitive impairment and people with tinnitus perform worse than a control group on different cognitive tasks. The hippocampus is known to play an important role in cognitive performance, and also in the pathophysiology of tinnitus. Hippocampal deficits have been described in animal models of tinnitus and in tinnitus patients a decrease in grey matter in the hippocampus has been demonstrated...
July 1, 2016: Brain Research
https://www.readbyqxmd.com/read/26955514/emerging-hubs-in-phantom-perception-connectomics
#11
Anusha Mohan, Dirk De Ridder, Sven Vanneste
Brain networks are small-world networks typically characterized by the presence of hubs, i.e. nodes that have significantly greater number of links in comparison to other nodes in the network. These hubs act as short cuts in the network and promote long-distance connectivity. Long-distance connections increase the efficiency of information transfer but also increase the cost of the network. Brain disorders are associated with an altered brain connectome which reflects either as a complete change in the network topology, as in, the replacement of hubs or as an alteration in the connectivity between the hubs while retaining network structure...
2016: NeuroImage: Clinical
https://www.readbyqxmd.com/read/26830446/graph-theoretical-analysis-of-brain-connectivity-in-phantom-sound-perception
#12
Anusha Mohan, Dirk De Ridder, Sven Vanneste
Tinnitus is a phantom sound commonly thought of to be produced by the brain related to auditory deafferentation. The current study applies concepts from graph theory to investigate the differences in lagged phase functional connectivity using the average resting state EEG of 311 tinnitus patients and 256 healthy controls. The primary finding of the study was a significant increase in connectivity in beta and gamma oscillations and a significant reduction in connectivity in the lower frequencies for the tinnitus group...
February 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/26736670/dysfunctional-long-term-habituation-to-exogeneous-tinnitus-matched-sounds-in-patients-with-high-tinnitus-distress
#13
Caroline Lehser, Ronny Hannemann, Farah I Corona-Strauss, Daniel J Strauss, Lars Haab, Birgit Seidler-Fallbohmer, Harald Seidler
During the last years, the demand of accurate diagnostic tools for individualized tinnitus treatment gradually increased. Today several different psychometric instruments for the estimation of the patients degree of decompensation with clinical relevance have emerged. All of these tools are questionnaires for a subjective self-assessment and have deficits in comparability due to severe differences in their factor structure in the anamnesis. Those questionnaires thus they are only of limited value in the design of an individualized therapeutic approach...
August 2015: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/26708013/deafferentation-based-pathophysiological-differences-in-phantom-sound-tinnitus-with-and-without-hearing-loss
#14
Sven Vanneste, Dirk De Ridder
Tinnitus has been considered an auditory phantom percept. Recently a theoretical multiphase compensation mechanism at a cortical level has been hypothesized linking auditory deafferentation to tinnitus. This Bayesian brain model predicts that two very different kinds of tinnitus should exist, depending on the amount of hearing loss: an auditory cortex related form of tinnitus not associated with hearing loss, and a (para)hippocampal form associated with hearing loss, in which the auditory cortex might be of little relevance...
April 1, 2016: NeuroImage
https://www.readbyqxmd.com/read/26584760/whole-scalp-resting-state-eeg-of-oscillatory-brain-activity-shows-no-parametric-relationship-with-psychoacoustic-and-psychosocial-assessment-of-tinnitus-a-repeated-measures-study
#15
RANDOMIZED CONTROLLED TRIAL
Robert H Pierzycki, Adam J McNamara, Derek J Hoare, Deborah A Hall
Tinnitus is a perception of sound that can occur in the absence of an external stimulus. A brief review of electroencephalography (EEG) and magnetoencephalography (MEG) literature demonstrates that there is no clear relationship between tinnitus presence and frequency band power in whole scalp or source oscillatory activity. Yet a preconception persists that such a relationship exists and that resting state EEG could be utilised as an outcome measure for clinical trials of tinnitus interventions, e.g. as a neurophysiological marker of therapeutic benefit...
January 2016: Hearing Research
https://www.readbyqxmd.com/read/26557055/repetitive-transcranial-magnetic-stimulation-induces-oscillatory-power-changes-in-chronic-tinnitus
#16
Martin Schecklmann, Astrid Lehner, Judith Gollmitzer, Eldrid Schmidt, Winfried Schlee, Berthold Langguth
Chronic tinnitus is associated with neuroplastic changes in auditory and non-auditory cortical areas. About 10 years ago, repetitive transcranial magnetic stimulation (rTMS) of auditory and prefrontal cortex was introduced as potential treatment for tinnitus. The resulting changes in tinnitus loudness are interpreted in the context of rTMS induced activity changes (neuroplasticity). Here, we investigate the effect of single rTMS sessions on oscillatory power to probe the capacity of rTMS to interfere with tinnitus-specific cortical plasticity...
2015: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/26440521/-transcranial-alternating-current-stimulation-entrainment-and-function-control-of-neuronal-networks
#17
REVIEW
J Vosskuhl, D Strüber, C S Herrmann
Transcranial alternating current stimulation (tACS) is a new technique for the modulation of oscillatory brain activity as measured in the electroencephalogram (EEG). In contrast to well-established stimulation techniques, such as transcranial direct current stimulation and transcranial magnetic stimulation, tACS applies a sinusoidal alternating current at a specific frequency. This enables the modulation of the amplitude and frequency of endogenous brain oscillations as well as related cognitive processes...
December 2015: Der Nervenarzt
https://www.readbyqxmd.com/read/26430749/a-pilot-study-of-eeg-source-analysis-based-repetitive-transcranial-magnetic-stimulation-for-the-treatment-of-tinnitus
#18
Hui Wang, Bei Li, Yanmei Feng, Biao Cui, Hongmin Wu, Haibo Shi, Shankai Yin
OBJECTIVE: Repetitive Transcranial Magnetic Stimulation (rTMS) is a novel therapeutic tool to induce a suppression of tinnitus. However, the optimal target sites are unknown. We aimed to determine whether low-frequency rTMS induced lasting suppression of tinnitus by decreasing neural activity in the cortex, navigated by high-density electroencephalogram (EEG) source analysis, and the utility of EEG for targeting treatment. METHODS: In this controlled three-armed trial, seven normal hearing patients with tonal tinnitus received a 10-day course of 1-Hz rTMS to the cortex, navigated by high-density EEG source analysis, to the left temporoparietal cortex region, and to the left temporoparietal with sham stimulation...
2015: PloS One
https://www.readbyqxmd.com/read/26280116/deep-brain-stimulation-of-heschl-gyrus-implantation-technique-intraoperative-localization-and-effects-of-stimulation
#19
Chris Donovan, Jennifer Sweet, Matthew Eccher, Cliff Megerian, Maroun Semaan, Gail Murray, Jonathan Miller
BACKGROUND: Tinnitus is a source of considerable morbidity, and neuromodulation has been shown to be a potential treatment option. However, the location of the primary auditory cortex within Heschl gyrus in the temporal operculum presents challenges for targeting and electrode implantation. OBJECTIVE: To determine whether anatomic targeting with intraoperative verification using evoked potentials can be used to implant electrodes directly into the Heschl gyrus (HG)...
December 2015: Neurosurgery
https://www.readbyqxmd.com/read/26278558/multidisciplinary-assessment-of-patients-with-musical-hallucinations-tinnitus-and-hearing-loss
#20
Savya Cybelle Milhomem Rocha, Marcia Akemi Kii, Cristiana Borges Pereira, Danilo Totarelli Borelli, Orestes Forlenza, Tanit Ganz Sanchez
BACKGROUND: Although auditory hallucinations are considered a psychopathological phenomenon, musical hallucinations have been reported in individuals without psychosis but with auditory symptoms (tinnitus and/or hearing loss). Thus, a possible different cognitive functioning may be involved in musical hallucinations. The aim of the study was to characterize patients with tinnitus and musical hallucinations through a multidisciplinary assessment, allowing a better understanding of these concomitant phenomena...
2015: Psychopathology
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