Earwax removal at Chalfont hearing centre Buckinghamshire
Earwax removal at The Chalfont hearing centre. Chalfont hearing centre is a premier private family run business with Leon Cox at the helm. Hearing tests and hearing aids are to be found at Chalfont hearing centre alongside ear wax removal using Micro-suction or the traditional water irrigation technique (ear syringing).
The very latest digital hearing aids by all the main manufacturers are available. Trail hearing aids are also available but please as Leon for a more comprehensive idea how this works in the Chalfont area.
Book now for your ear wax removal or for a hearing test.
Chalfont hearing centre, News:
GN Hearing Launches AI Personalized Hearing Solutions
GN Hearing announced that it has launched “the world’s first” hearing solutions that intuitively adapt to a hearing aid user’s personal preferences in any given sound environment. This breakthrough technology employs GN’s artificial intelligence (AI) solution in tandem with Apple’s Siri virtual assistant. The announcement was made at the Consumer Electronics Show (CES) 2019 in Las Vegas.
It follows GN’s longstanding commitment to progressing hearing aid technologies through extensive research and development programs. This new offering follows years of investment in GN’s dedicated in-house AI research center, investments in AudEERING, and extensive collaboration with other partners and academic research institutes. The launch helps to extend GN’s innovation footprint and partnership philosophy in the hearing care industry by what GN calls an “intuitive and personalized hearing solution.”
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“At GN, we believe that technology is at its best when it helps address people’s everyday needs and challenges,” said Marcus Desimoni, CFO of GN and Interim CEO of GN Hearing. “Employing AI technology in GN’s products brings this specific technology and innovation to the hearing aid space and is the first step in the journey to create a seamless hearing experience that will allow hearing aid users to ‘forget’ that they are wearing one. This is core to GN’s purpose of making life sound better.”
The new offering is an added benefit to the company’s latest 2.4 GHz product portfolio from ReSound and Beltone, and it will be reaching users in February 2019. Through the use of AI, GN expects to deliver a continuous stream of new user benefits through future software releases. This will enable users to always be at the forefront of innovation by updating existing GN Hearing instruments with new features.
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When GN was established 150 years ago, the company introduced the world’s first telegraph line from Europe to Asia, creating the Internet of its time. It is this same pioneering spirit that is being applied today to transform lives, helping people hear more, do more, and be more than they ever thought possible.
Source: GN Hearing
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Hearing aids and ear wax at the Chalfont hearing centre
Ear wax can be a debilitating condition if not treated. Your hearing will suffer and you maybe become less involved in your surroundings. Not being able to hear properly really can be a pain in the ear in more ways than one. At the Chalfont hearing centre we can asses your ears, if there is ear wax to be removed then we can do this painlessly and very quickly using Micro-Suction. You don’t feel anything at all and it can be done very very quickly by Leon Cox the lead audiologist at the Chalfont hearing centre.
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Book an appointment and we can soon sort out any hearing issues or ear wax issues. Todays hearing aids/instruments really are breathtaking on how they have evolved in the last 5 years. These digital hearing aids are something else when it comes to connectivity. They will connect to your iPhone, Android phone and wearable digital watches. Ask us to give you more information.
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Chalfont hearing centre News:
Phonak Launches Marvel with Universal Binaural Streaming and New Level of Sound Quality
New levels of binaural sound quality and universality. One key feature that immediately jumps out in Audéo M is its sound quality. For real audiophiles and others accustomed to hi-fi systems, the sound quality in today’s hearing aids is very good, but can still prompt them to ask why the devices can’t sound like stereo headphones. Of course, the problem—which has been around even before made-for-iPhone (MFi) systems became available—stems primarily from the venting of the aid for real-life environmental speech and sounds. This provides the important natural sound benefits associated with open-fit aids, but has required a trade-off in streamed sound quality. With the Audéo M, Phonak has reinserted a clear richer sound into streamed music, TV, or other devices via hearing aids—and demonstrated fairly dramatic differences in a paired comparison test. The system features AutoSense OS 3.0 which reportedly classifies streamed media for optimized listening.
“We have the first classifier that also operates on the streamed signal,” said Christine Jones, AuD, Phonak US vice-president of Audiology and director of the Phonak Audiology Research Center (PARC) in Warrenville during a presentation at the media event. “Some of the early work we did highlighted that there was an opportunity with streaming—as with the unique listening environments that can also be encountered by patients—where someone’s preferences may be very different than when listening to streamed speech, or dialog in media, movies, etc. Listening goals can be different, and sound quality preferences can be different. So, now we are not only classifying the environmental sounds, but we can also classify those streamed sounds to deliver the best possible experience under all listening conditions.”
Although the advanced design of the previous Audéo B-Direct model is award-winning, it does not feature binaural streaming. With the new Audéo M, wearers can now binaurally stream audio content, including smartphone calls, music, eBooks, and more, to both ears from any Bluetooth device.
Phonak points out that iPhones account for only 13% of smartphone use worldwide compared to 86% for the Android OS, and wearers’ choices have been limited primarily to hearing aids that utilize the MFi protocol. Additionally, even with IOS-compatible devices, some forms of MFi hearing aid streaming (eg, streaming from MacBooks and iMacs) were unavailable until now. SWORD 3.0 is capable of running Bluetooth Classic, Bluetooth LE, AirStream Technology (for TV), and Binaural VoiceStream Technology for high-speed data transmission between the two hearing aids in a binaural fitting. The new system even works with Siri and LiveListen. (Phonak’s proprietary Roger 2.4 GHz signal will also have direct streaming capabilities to the hearing aid next fall.)
“This means we now have universal binaural wireless connectivity,” said Dr Jones. “In order to have the best access to speech on the phone, it’s best to hear well with both ears. And, beyond that, we are the only product that now connects to not just Apple and Android, but any Bluetooth device. This opens up a new world of connectivity for people because of its universal nature…What this means is, that in those cases where something is not accessible through the Apple iPhone or device, it should be accessible through the hearing aid.”
Jones explained that Phonak has also created a sophisticated system called “Environmental Balance” that controls how users hear the streaming in addition to how they hear the surrounding environment, both of which can still be adjusted via the basic volume control. All of this has the potential to open up even more of the popular streaming applications.
Better processing and noise reduction, reducing cognitive load.Additionally, the enhanced SWORD OS incorporates Binaural VoiceStream Technology™ into Marvel hearing aids, a technology most recently employedin Advanced Bionics’ Naida CI sound processor. This four-microphone technology is reportedly capable of improving speech understanding by up to 60% in noisy places like restaurants, while simultaneously reducing the amount of effort by 19% required to listen and understand.1,2
“Audiology is at the heart of everything we do at Phonak,” said Sonova Group VP Martin Grieder in a press statement. “That’s why Marvel is such a game-changer for our industry. Marvel technology empowers people and provides a true ‘love at first sound’ experience. We believe the sound quality is second to none, and it begins the moment the person puts the hearing aids on.”
Lithium-ion rechargeable technology for “a full day of streaming.” While no reliable statistics exist on the market penetration of rechargeable hearing aids, most experts estimate that about 17-20% of all hearing aids now feature rechargeability. Phonak has been a pioneer in rechargeable hearing aid technology, creating in 2016 the first lithium-ion hearing aids—a technology that appears to be gaining ground with hearing aid manufacturers.
According to Phonak, Marvel hearing aid wearers can enjoy a full day of hearing aid use—including streaming— on a single charge. The Audéo M rechargeable hearing aid also offers new features, automatically turning on or off when taken out or being placed into the charger. The system includes new LED lights and a new mini charger.
Remote fine-tuning and live voice-to-text transcription apps. With Marvel hearing aids comes the introduction of a suite of convenient smart apps. The myPhonak app allows wearers to have their hearing aids adjusted in real-time, in any situation, anywhere via videocall by the hearing care professional. It also gives consumers the ability to rate their hearing aid satisfaction in various environments and directly send this feedback to their hearing care professional.
The myCall-to-Text app reportedly provides live transcription of phone calls from the other party in more than 80 languages. This provides an extremely useful option for hearing aid users in noisy environments, or for people who prefer additional visual captions when using the phone.
New marketing campaign and rollout. A suite of marketing materials has been developed to promote the Marvel launch. Phonak US Vice-president of Marketing Barb VanSomeren explained that the marketing surrounding Marvel emphasizes its multifunctionality, providing consumers with access to the world of sound that we all want via enhanced sound quality, a constellation of devices and streaming options, and phone calls. The new marketing assets highlight Phonak technology, audiology leadership, and Marvel’s diverse capabilities, and includes a video series that features two women exploring all the different ways Marvel can be used in a contemporary format (eg, the women’s dialog resembles the TV show Grace and Frankie) .
The rechargeable Audéo M-R will be available in November along with the zinc air Audéo M-312, and Phonak will add the Audéo M-312T and Audéo M-13T in February 2019. A rechargeable version of Marvel with T-Coil (Audéo M-RT) and RogerDirect functionality will be available as a firmware upgrade in Fall 2019.
Hearing aids, Buckinghamshire
The Chalfont hearing centre is an independent hearing specialist centre based in Chalfont Bucks. We specialise in the very latest hearing aids that will transform your life. The new 2018 digital hearing aids are a joy to use, connecting with your Iphone or most Android smart phones that are on the market today. You can really hear the benefits of the latest hearing tech, so why not book in and have a hearing test today and discuss your needs.
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Swedish University Researchers Develop New Test for Balance Disorders
Many individuals over age 65 suffer from dizziness and problems with balance; however, tests to identify the causes of such problems are often painful and can risk hearing damage. Now, researchers from Chalmers University of Technology have developed a new testing device using bone conduction technology that is said to offer “significant advantages” over current tests, the Sweden-based university announced.
A Vestibular Evoked Myogenic Potentials (VEMP) test uses loud sounds to evoke a muscle reflex contraction in the neck and eye muscles, triggered by the vestibular system—the system responsible for our balance. The Chalmers researchers have now used bone-conducted sounds to achieve what they say are better results.
“We have developed a new type of vibrating device that is placed behind the ear of the patient during the test,” said Bo Håkansson, a professor in the research group ‘Biomedical signals and systems’ at Chalmers.
The vibrating device is small and compact in size, and optimized to provide an adequate sound level for triggering the reflex at frequencies as low as 250 Hz. Previously, no vibrating device has been available that was directly adapted for this type of test of the balance system.
In bone-conduction transmission, sound waves are transformed into vibrations through the skull, stimulating the cochlea within the ear, in the same way as sound waves go through the ear canal, the eardrum, and the middle ear. Håkansson has over 40 years of experience in this field and has previously developed hearing aids using this technology.
The cause of dizziness can be difficult to diagnose for several reasons. In 50% of cases, dizziness is due to problems in the vestibular system. But today’s VEMP methods have major shortcomings, and can cause hearing loss and discomfort for patients.
For example, the VEMP test uses very high sound levels, and may, in fact, cause permanent hearing damage itself, according to the university’s press release. And, if the patient already suffers from certain types of hearing loss, it may be impossible to draw any conclusions from the test. The Chalmers researchers’ new method offers significant advantages.
“Thanks to this bone conduction technology, the sound levels which patients are exposed to can be minimized,” said postdoctoral researcher Karl-Johan Fredén Jansson, who made all the measurements in the project. “The previous test was like a machine gun going off next to the ear—with this method it will be much more comfortable. The new vibrating device provides a maximum sound level of 75 decibels. The test can be performed at 40 decibels lower than today’s method using air-conducted sounds through headphones. This eliminates any risk that the test itself could cause hearing damage.”
The benefits also include safer testing for children as well as patients with impaired hearing function due to chronic ear infections or congenital malformations in the ear canal and middle ear.
The vibrating device is compatible with standardized equipment for balance diagnostics in healthcare and the cost of the new technology is estimated to be lower than the corresponding equipment used today.
A pilot study has been conducted and recently published. The next step is to conduct a larger patient study in collaboration with Sahlgrenska University Hospital in Gothenburg, where 30 participants with normal hearing will also be included.
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The scientific article “VEMP using a new low-frequency bone conduction transducer” has recently been published by Dove Medical Press, in the journal Medical Devices: Evidence and Research.
Chalmers’ partners in the study are the Sahlgrenska Academy at the University of Gothenburg, and the Danish audio companies Ortofon andInteracoustics. Grants for this project are received from Vinnova (Swedish Innovations Agency) and Hörselskadades Riksförbund (Hearing Impairment Federation).
Original Paper: Håkansson B, Fredén Jansson K-J, Tengstrand T, et al. VEMP using a new low-frequency bone conduction transducer. Medical Devices: Evidence and Research. 2018;11:301-312.
Source: Chalmers University of Technology, Medical Devices: Evidence and Research
Image: Johan Bodell/Chalmers University of Technology
Chalfont hearing & ear wax removal
The Chalfont hearing and ear wax removal centre is a premier independent local hearing service in Bucks. We believe in personal service, we offer premier hearing tests and ear wax removal. Using the latest knowledge and using the latest tech we know how to perform the very best hearing tests.
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Widex Announces New Insights into EVOKE Hearing Aid’s AI Function
Widex announced the first data gathered from the WIDEX EVOKE™ hearing aid, which is said to achieve “a new level of Artificial Intelligence (AI)” through machine learning, and is helping to bring new insights into how users are taking control of their sound environment to improve their hearing experience, according to the company.
Denmark-based Widex launched the WIDEX EVOKE hearing aid in April. The hearing aid is reportedly the first to give users the ability to employ real-time machine learning that can solve the tricky hearing problems that users face in their daily lives.
“We launched WIDEX EVOKE with SoundSense technology to put users back in control of the most difficult hearing situations,” said Jens Brehm Nielsen, data science & machine learning architect at Widex. “And we can see that EVOKE users have taken the opportunity to do that and, in the process, are helping us understand more about them. That information will help us to make the EVOKE and future hearing aids even better.”
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SoundSense Learn is an AI system, because AI is said to refer to systems that solve tasks humans are inherently good at—such as driving a car, doing the dishes, etc. SoundSense Learn expands into entirely new applications by helping end users adjust their hearing aids in the moment, reportedly something that no humans can replicate to the same degree of accuracy, according to Widex.
The SoundSense Learn smartphone app is connected to the EVOKE hearing aids and uses machine learning to guide users in optimizing the settings to their exact needs. The app gathers a variety of anonymous data such as how often they turn the volume up or down, which sound presets they use, and how many custom settings they create—including those made with SoundSense Learn.
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Tagging of custom settings has proved to be one of the interesting pieces of data generated by EVOKE.
“We found that many people have created a setting and tagged it with, for instance, ‘work’ which suggests that it is something that our end users need and want,” said Nielsen. “And from SoundSense Learn we already have an idea of how they like the settings.”
Some hearing aids give users the ability to customize their sound experience by adjusting frequency bands to boost or cut bass, middle or high tones. Adjusting frequencies works well in many situations once the initial settings have been set by a skilled audiologist. However, some situations are so complex that hitting the right combination of adjustments can be difficult.
“Widex hearing aids are well known for the quality of their sound,” said Nielsen. “But SoundSense Learn has added an extra layer of quality sound on top of that by using a machine learning algorithm together with reinforcement learning—the two key ingredients in state-of-the art AI algorithm, that enables the algorithm to learn in the moment.
“The algorithm learns an optimal setting every time a user finds the sound to be a little below expectations in a given sound environment. It learns these settings by simply asking the user to compare two settings that are carefully picked by the algorithm. This allows it to learn an optimal setting in a new environment very fast.”
By collating and analyzing the anonymous data WIDEX EVOKE will continue to become even smarter as time passes.
Best Bucks ear wax removal (Henley)
If you are looking to get your ears back into shape you could do no better than visit the Henley Hearing Clinic, Bucks. Hearing aid batteries and ear wax removal are just a small list of what is on offer at the premier hearing clinic in Buckinghamshire.
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Starkey Launches Livio AI Hearing Aid with Integrated Sensors and Artificial Intelligence
Starkey® Hearing Technologies is said to have “reinvented both the hearing experience and the hearing aid” with Livio AI. Livio AI is reportedly “the world’s first” Healthable™ hearing aid to utilize integrated sensors and artificial intelligence and the first device to track physical activity and cognitive health as measured by hearing aid use in social situations, Starkey announced.
The launch also includes a brand-new mobile app—Thrive™ Hearing—and three new wireless accessories, the Starkey Hearing Technologies TV, the Remote, and the Remote Microphone +. With the Remote Micorophone+, Livio AI is also the first hearing aid to feature Amazon® Alexa connectivity.
“First and foremost, Livio AI is the best performing and best sounding hearing aid we have ever made,” said Starkey Hearing Technologies President Brandon Sawalich. “What makes today a pivotal moment in the hearing industry, is that with Livio AI, we have transformed a single-use device into the world’s first multi-purpose hearing aid, a Healthable with integrated sensors and artificial intelligence. Livio AI is so much more than just a hearing aid, it is a gateway to better health and wellness.”
According to Starkey, the new Hearing Reality™ technology is said to provide an average 50% reduction in noisy environments, significant reduced listening effort, and newly enhanced clarity of speech, while the use of artificial intelligence and integrated sensors enables it to help optimize the hearing experience.
Artificial intelligence and advancements in hearing technology enabled Livio AI to provide the following unique features and benefits, according to Starkey’s announcement:
- Understand and see the real-time health benefits of using hearing aids – NEW
- Overall health and wellness tracking through the app’s combined brain and body health score (Thrive Wellness Score) – NEW
- Integration of the physical activity data measured by inertial sensors of the hearing aids with Apple Health and Google Fit apps – NEW
- Personalized Control for customizable adjustments to sound and programs
- Remote programming by users’ hearing professionals to put hearing healthcare in the hands of the users – NEW
- Natural user interface with tap control – NEW
- Unprecedented, natural listening, and speech clarity in the noisiest environments with the new Hearing Reality technology – NEW
- Integrated language translation – NEW
- Dual-radio wireless platform: 2.4GHz radio for streaming of phone calls, music, media, apps, and connecting with various devices including TVs and Amazon Alexa; near-field magnetic induction technology for true ear-to-ear communication and binaural noise reduction
- Fall detection with inertial sensors integrated within the hearing aids (App support coming soon) – NEW
Designed to help users live their healthiest life, Livio AI is available as a RIC 312 and BTE 13 in a variety of colors. In addition to the above features, Livio AI also includes Starkey’s feedback cancellation, high-definition music prescription, Multiflex Tinnitus Technology, and Surface™ NanoShield pioneering water, wax, and moisture repellant system to help protect and ensure durability and dependability.
How integrated sensors and AI helped Starkey transform the hearing aid
“Artificial intelligence, coupled with advanced sensing devices, is rapidly changing the world around us,” Starkey Hearing Technologies Chief Technology Officer and Executive Vice President of Engineering Dr Achin Bhowmik said. “We are proud to introduce these transformational technologies into the world of hearing aids to both optimize the users’ hearing experiences and enable them to continuously monitor and improve their overall health besides treating hearing loss, reducing the associated risks of dementia, anxiety, and social isolation.”
The integrated 3D motion sensors inside Livio AI enable the hearing aids to detect movement, track activities, and recognize gestures. The hearing aids communicate with each other and compatible mobile accessories to deliver meaningful, real-time feedback about users’ overall body and cognitive health and fitness.
This technology may allow people to take a proactive and personal approach to treating hearing loss, which has been linked to various health issues including dementia, cognitive decline, anxiety, stress, social isolation, and an increased risk of falling.
Livio AI is reportedly the first device utilizing the ears to help users better understand not only how to improve their overall health and wellness, but also the deep connection between treating hearing loss and reducing health risks. This helps to improve key areas of wellbeing by reconnecting users to the people, places, and activities they love.
Livio AI is available in the United States and Canada at this time, with a global rollout to more than 20 countries in 2019. For more information about Livio AI hearing aids, the Thrive mobile app, and new Starkey Hearing Technologies accessories, please visit www.starkey.com
Stay tuned to Hearing Review for a follow-up article detailing Starkey’s launch of Livio AI.
Chalfont hearing ear wax information: Click here to see our ear wax removal video
Best independent hearing company in Bucks
The Chalfont hearing centre is regarded as one of the best independent hearing centres in the whole of Buckinghamshire. Leon Cox, lead audiologist based at both the Henley & Chalfont hearing centres is fully qualified and regulated to conduct hearing tests and earwax removal using Microsuction. He also dispenses the very latest digital hearing aids.
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Though public transportation is thought to be better for the environment in that it reduces greenhouse gas emissions, saves energy, and improves air quality, according to the Federal Transit Administration, there may be a negative effect on your personal health.
According to a recent Canadian study, commuters traveling during peak hours were exposed to maximum noise levels. A summary of the study’s results, published on the Hear-it AISBL—a nonprofit organization that provides information on hearing loss—website, show the results of the study, which was published in the Journal of Otolaryngology—Head & Neck Surgery. In this article, we’ll share the highlights, edited and adapted from the Hear-it website.
Researchers looked at two different commuting situations among Toronto residents: people waiting for a streetcar/bus as compared to people walking/biking to a subway. Bikers were exposed to louder noise than those walking or driving a vehicle. Noise levels were higher for those waiting on a subway platform as compared to those in the subway car. And, finally, research showed that those waiting at bus stops were exposed to the loudest noise of all.
Though commuters often only experienced short and intense bursts of impulse noise exceeding the 114 dBA limit recommended by the EPA, researchers concluded this can be just as harmful as prolonged noise exposure. Up to 20% of the peak mean noise measurementsexceeded 114 dBA, and up to 85% of measurements at bus stops were higher than 120 dBA, according to the study. Researchers were concerned that prolonged exposure could lead to noise-induced hearing loss.
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For the very latest Digital hearing aids and earwax removal techniques visit the Chalfont hearing Centre
The Chalfont hearing centre can proudly boast of being one of the best independent hearing clinics in Bucks. Leon Cox the lead audiologist and owner know a thing or two when it comes to hearing aids and clearing earwax.
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Researchers Identify New Type of Vertigo, According to Study Published in ‘Neurology’
With vertigo, people have episodes of dizziness that can last from minutes to days. Vertigo can be caused by serious conditions, such as tumors, or conditions that are fairly benign, such the inner ear disorder Meniere’s disease. But for some people, no cause can be found.
In this new study, neurologists have identified a new type of vertigo where treatment may be effective.
“These conditions can be difficult to diagnose and quite debilitating for people, so it’s exciting to be able to discover this new diagnosis of a condition that may respond to treatment,” said study author Ji-Soo Kim, MD, PhD, of Seoul National University in Seongnam, South Korea.
To diagnose this new condition, the person sits in a dark room and the examiner moves the patient’s head forward and then the head is shaken horizontally for about 15 seconds. Then the patient opens his or her eyes and a video recording is taken of eye movements. The neurologists discovered that after the test, people with this new condition had eye movements called nystagmus that lasted longer than for other people. The new condition is called recurrent spontaneous vertigo with head-shaking nystagmus.
Among 338 people with vertigo with no known cause, 35 had this new condition and were included in the study. The participants had attacks of vertigo ranging from two or three times a week to once a year. They also experienced nausea or vomiting, headaches, and intolerance of head motions during the attacks.
The participants were compared to 35 people with other conditions that can cause vertigo, such Meniere’s disease, vestibular migraine, and vestibular neuritis. The test measured the time constant, or the time that represents the speed with which the reflexive eye movements can respond to change. For those with the new condition, the time constant during the primary phase of the nystagmus was 12 seconds, while it was six seconds for those with Meniere’s disease and five seconds for those with vestibular neuritis and vestibular migraine.
The neurologists also found that people with the new type of vertigo were more likely to have severe motion sickness than those with other types of vertigo.
A total of 20 of the 35 people with the new type of vertigo who had frequent attacks and severe symptoms were given preventive medication. About one-third of those had partial or complete recovery with the new medication. During the long-term follow-up of an average of 12 years after the first symptoms for 31 participants, five reported no more attacks, 14 said their symptoms had improved, and only one said symptoms had gotten worse.
Kim said that people with this condition may have a hyperactive mechanism in their vestibular system that helps the brain respond to movement of the body and in the environment.
“It’s possible that the vertigo occurs when this unstable mechanism is disrupted by factors either within the person’s body or in their environment,” Kim said.
The study was supported by the National Research Foundation of Korea. Learn more about the brain at www.BrainandLife.org, the American Academy of Neurology’s free patient and caregiver magazine and website focused on the intersection of neurologic disease and brain health. Follow Brain & Life on Facebook, Twitter, and Instagram.
The American Academy of Neurology is said to be the world’s largest association of neurologists and neuroscience professionals, with 34,000 members. The AAN is dedicated to promoting the highest quality patient-centered neurologic care. A neurologist is a doctor with specialized training in diagnosing, treating and managing disorders of the brain and nervous system such as Alzheimer’s disease, stroke, migraine, multiple sclerosis, concussion, Parkinson’s disease, and epilepsy.
Original Paper: Lee S-U, Jeong-Yoon C, Hyo-Jung K, Ji-Soo, K. Recurrent spontaneous vertigo with interictal headshaking nystagmus. Neurology. 2018. Available at: http://n.neurology.org/content/early/2018/05/23/WNL.0000000000005689
Source: AAN, Neurology
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Here at The Chalfont hearing centre we don’t really go around saying we are the best hearing centre in Bucks all the time, but we do like to think we are one of the best.
We offer the most up to date tech for getting your hearing back to a liveable level that you will really notice. We also offer ear wax removal using the very gentle Microsuction Technique or the traditional water ear irrigation technique. As we are the leading audiology clinic in the area we do have the very latest in hearing tech and digital hearing aids.
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Brainwave Abnormality Could Be Common to Parkinson’s Disease, Tinnitus, Depression
Vanneste and his colleagues—Dr Jae-Jin Song of South Korea’s Seoul National University and Dr Dirk De Ridder of New Zealand’s University of Otago—analyzed electroencephalograph (EEG) and functional brain mapping data from more than 500 people to create what Vanneste believes is the largest experimental evaluation of TCD, which was first proposed in a paper published in 1996.
“We fed all the data into the computer model, which picked up the brain signals that TCD says would predict if someone has a particular disorder,” Vanneste said. “Not only did the program provide the results TCD predicted, we also added a spatial feature to it. Depending on the disease, different areas of the brain become involved.”
“The strength of our paper is that we have a large enough data sample to show that TCD could be an explanation for several neurological diseases.”
Brainwaves are the rapid-fire rhythmic fluctuations of electric voltage between parts of the brain. The defining characteristics of TCD begin with a drop in brainwave frequency—from alpha waves to theta waves when the subject is at rest—in the thalamus, one of two regions of the brain that relays sensory impulses to the cerebral cortex, which then processes those impulses as touch, pain, or temperature.
A key property of alpha waves is to induce thalamic lateral inhibition, which means that specific neurons can quiet the activity of adjacent neurons. Slower theta waves lack this muting effect, leaving neighboring cells able to be more active. This activity level creates the characteristic abnormal rhythm of TCD.
“Because you have less input, the area surrounding these neurons becomes a halo of gamma hyperactivity that projects to the cortex, which is what we pick up in the brain mapping,” Vanneste said.
While the signature alpha reduction to theta is present in each disorder examined in the study—Parkinson’s, pain, tinnitus, and depression—the location of the anomaly indicates which disorder is occurring.
“If it’s in the auditory cortex, it’s going to be tinnitus; if it’s in the somatosensory cortex, it will be pain,” Vanneste explained. “If it’s in the motor cortex, it could be Parkinson’s; if it’s in deeper layers, it could be depression. In each case, the data show the exact same wavelength variation—that’s what these pathologies have in common. You always see the same pattern.”
EEG data from 541 subjects was used. About half were healthy control subjects, while the remainder were patients with tinnitus, chronic pain, Parkinson’s disease, or major depression. The scale and diversity of this study’s data set are what set it apart from prior research efforts.
“Over the past 20 years, there have been pain researchers observing a pattern for pain, or tinnitus researchers doing the same for tinnitus,” Vanneste said. “But no one combined the different disorders to say, ‘What’s the difference between these diseases in terms of brainwaves, and what do they have in common?’ The strength of our paper is that we have a large enough data sample to show that TCD could be an explanation for several neurological diseases.”
With these results in hand, the next step could be a treatment study based on vagus nerve stimulation—a therapy being pioneered by Vanneste and his colleagues at the Texas Biomedical Device Center at UT Dallas. A different follow-up study will examine a new range of psychiatric diseases to see if they could also be tied to TCD.
For now, Vanneste is glad to see this decades-old idea coming into focus.
“More and more people agree that something like thalamocortical dysrhythmia exists,” he said. “From here, we hope to stimulate specific brain areas involved in these diseases at alpha frequencies to normalize the brainwaves again. We have a rationale that we believe will make this type of therapy work.”
Original Paper: Vanneste S, Song J-J, De Ridder D. Thalamocortical dysrhythmia detected by machine learning. Nature Communications. 2018;9(1103)
Source: Nature Communications, University of Texas at Dallas
Image: University of Texas at Dallas
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‘CNN’ Profiles Inventor of HearGlass
Peter Sprague, the 78-year-old inventor of HearGlass—a technology that incorporates amplification into eyeglass frames—is featured in a recent CNN profile.
According to the article, Sprague was frustrated by how standard hearing aids “distorted audio” and has incorporated directional microphones, Bluetooth and WiFi capabilities, and a discreet design into his fourth-generation prototype.
If you are closer to Henley try our Henley Hearing Clinic branch? http://www.henleyhearing.co.uk
Marshall Chasin, a frequent contributor to Hearing Review, was quoted in the article about the ways hearing aid manufacturers have improved their devices to help provide users with more dynamic sound options.
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Salt- or Sugar-Based Solution May Diminish Noise-Induced Hearing Loss
It’s well known that exposure to extremely loud noises—whether it’s an explosion, a firecracker, or even a concert — can lead to permanent hearing loss. But knowing how to treat noise-induced hearing loss, which affects about 15% of Americans, has largely remained a mystery. That may eventually change, thanks to new research from the Keck School of Medicine of USC, which sheds light on how noise-induced hearing loss happens and shows how a simple injection of a salt- or sugar-based solution into the middle ear may preserve hearing, the school announced on its website. The results of the study were published in PNAS.
To develop a treatment for noise-induced hearing loss, the researchers first had to understand its mechanisms. They built a tool using novel miniature optics to image inside the cochlea, the hearing portion of the inner ear, and exposed mice to a loud noise similar to that of a roadside bomb.
They discovered that two things happen after exposure to a loud noise: sensory hair cells, which are the cells that detect sound and convert it to neural signals, die, and the inner ear fills with excess fluid, leading to the death of neurons.
“That buildup of fluid pressure in the inner ear is something you might notice if you go to a loud concert,” said the study’s corresponding author John Oghalai, MD, chair and professor of the USC Tina and Rick Caruso Department of Otolaryngology–Head and Neck Surgery and holder of the Leon J. Tiber and David S. Alpert Chair in Medicine. “When you leave the concert, your ears might feel full and you might have ringing in your ears. We were able to see that this buildup of fluid correlates with neuron loss.”
Both neurons and sensory hair cells play critical roles in hearing.
“The death of sensory hair cells leads to hearing loss. But even if some sensory hair cells remain and still work, if they’re not connected to a neuron, then the brain won’t hear the sound,” Oghalai says.
The researchers found that sensory hair cell death occurred immediately after exposure to loud noise and was irreversible. Neuron damage, however, had a delayed onset, opening a window of opportunity for treatment.
A simple solution
The buildup of fluid in the inner ear occurred over a period of a few hours after loud noise exposure and contained high concentrations of potassium. To reverse the effects of the potassium and reduce the fluid buildup, salt- and sugar-based solutions were injected into the middle ear, just through the eardrum, three hours after noise exposure. The researchers found that treatment with these solutions prevented 45–64% of neuron loss, suggesting that the treatment may offer a way to preserve hearing function.
The treatment could have several potential applications, Oghalai explained.
“I can envision soldiers carrying a small bottle of this solution with them and using it to prevent hearing damage after exposure to blast pressure from a roadside bomb,” he said. “It might also have potential as a treatment for other diseases of the inner ear that are associated with fluid buildup, such as Meniere’s disease.”
Oghalai and his team plan to conduct further research on the exact sequence of steps between fluid buildup in the inner ear and neuron death, followed by clinical trials of their potential treatment for noise-induced hearing loss.
Original Paper: Kim J, Xia A, Grillet N, Applegate BE, Oghalai JS. Osmotic stabilization prevents cochlear synaptopathy after blast trauma. PNAS. 2018. Available at: http://www.pnas.org/content/early/2018/05/01/1720121115.short?rss=1
Source: Keck School of Medicine of USC, PNAS
Image: Keck School of Medicine of USC