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Effects of noise induced hearing loss
Effects of noise induced hearing loss
Effects of noise induced hearing loss
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Throughout our day to day lives we are exposed to many sounds such as the sound of traffic, coversation, TV, nature and music. More often than not these sounds that we experience are at a low safe level, levels that will not affect or harm our hearing. Unfortunatley when we are exposed to sound levels that are too high or loud sounds over a long period of time there is a chance that the delicate inner workings of the ear can be permanatly damaged. This is known as noise induced hearing loss (NIHL)
The effects of NIHL can be noticed either immediately witha sudden dramatic loss of hearing or gradually over a long period of time where it may slowly become harder to understand someone talking in a noisy room. NIHL can affect the hearing of either
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Sound is localised to the ear by the pinna, travelling down the auditory canal, vibrating the eardrum. The eardrums vibrations are then passed down through the ossicles, three small bones known as the hammer, anvil and stirrup that then transfer the vibrations to the oval window of the cochlea. The cochlea is filled with fluid that when exposed to these vibrations stimulate the sterocilia. This small hair cells "wiggle" along to certain frequencies transferring the vibrations into electrical impulses that are then sent to the brain. If the ear is exposed to noise levels of too high an intensity the sterocilia are overstimulated and many become permanently damaged . (Sliwinska-Kowalska et. All, …show more content…
The unit used to measure the intensity of sound is called the decibel(dB). Sounds that measure up to 75dB are considered to be in the "safe zone". Constant exposure to to sound at these levels are very unlikely to cause any lasting damage to long term hearing. The sound of regular volume conversation measures at around 60dB and the sound of a running dishwasher measures at roughly 75dB. Sounds around the 85dB level are considered a moderate risk to hearing. Exposure at these levels for extened periods of time may lead to some form of damage causing NIHL. Sounds at these levels include heavy traffic and crowded areas at 85dB, active subway stations at 95dB and listening to an mp3 player with ear buds at maximum volume at 105dB in which listening for just 15 minutes can cause permanent damage. Sound at 120dB and above are in the "danger zone". This level of sound is to be avoided at all cost as exposure even for a short pulse will lead to immediate permanent damage. This level includes the sound of ambulance sirens at 120dB, a jet taking off at 140dB and gunshots at 165 dB and above. (Rabinowitz,
Technology nowadays is getting more and more dangerous, especially to our ears. Every day we are subjected to videos, text sounds, alert sounds, alarms, and anything else that may be of use in life. These sounds seem to be happening more often which is damaging our ears. There is a solution to this damage though, and that is cochlear implants. These implants will bypass the damaged part of your ear to give you a sense of sound that can be made very useful to the patient. This paper will look into how the ear works, how hearing loss happens, why these cochlear implants are a good solution, how these implants work, cost and ethics related to these implants, and what the future holds for them.
With around 70,000 special education students with hearing losses in the US it is no wonder that teaching these students the art of music has become an important opportunity within their education (U.S. Department of Education). According to Darrow and Heller (1985) as well as Solomon (1980) the history of education for students with hearing loss extends over a hundred and fifty years. These students have every right to music education classes and music instructors need to understand their unique learning differences and similarities to those of the average typical (mainstreamed) student to ensure these students have a successful and comprehensive learning experience. Despite this, there are still plenty of roadblocks, one of which may be some music instructor’s lack of effective practices and methods to successfully teach to the student’s more unique needs. Alice Ann-Darrow is a Music Education and Music Therapy Professor at Florida State University. Darrow’s article “Students with Hearing Losses” focuses not only on the importance of music education for these students but it is also a summarized guide of teaching suggestions containing integral information for the unique way these students learn.
From this point, vibration of the connective membrane (oval window) transforms mechanical motion into a pressure wave in fluid. This pressure wave enters and hence passes vibrations into the fluid filled structure called the cochlea. The cochlea contains two membranes and between these two membranes, are specialized neurons or receptors called hair cells. Once vibrations enter the cochlea, they cause the lower membrane (basilar membrane) to move in respect to the upper membrane (i.e. the tectorial membrane in which the hair cells are embedded). This movement bends the hair cells to cause receptor potentials in these cells which in turn cause the release of transmitter onto the neurons of the auditory nerve.
conduction deafness, there is interruption of the sound vibrations in their passage from the outer world to the nerve cells
Although level noise do not reach OSHA level (occupational safety & health administration) that causes noise-induced hearing loss, the paediatric nurse in the unit are exposed to continuous moderate noise levels that may causing impairment (Berens, 2008). In addition, these noise exposures may result in abnormalities in the stress response as well as in sleep patterns. (Berens, 2008). If working long shifts weekly and being exposed to noise it will have an effect on hearing loss. The loss of hearing depends on how loud the sound is and the length the person is exposed to sound. Exposure to high level of noise and sound can cause deafness. During or after being exposed to loud noise can leave a ringing sound in the ear. Noise will interfere with communication which could lead to misunderstanding of orders. This could lead to a higher risk of accidents when communication is
First, a discussion of the ear physiology is needed. Vibrating air moving at different frequencies hits the eardrum which causes the middle ear's three bones to move accordingly. The stapes, one of these inner ear bones hits on the oval window of the inner ear, and because the inner ear is filled with fluid, the bulging of the oval window causes this fluid to slosh around. The round window, also in the inner ear, compensates for the increased pressure by bulging outward. The inner ear has two functions, to transduce sound via the cochlea and to maintain a person's vertical position with respect to gravity via the vestibular system (1). . But here, we will only consider the transduction of sound. The cochlea is filled with hair cells that are extremely sensitive and depolarize with only slight perturbations of the inner ear fluid. At the point of depolarization, a neural signal is transmitted and on its way to the brain. This nerve impulse travels to the auditory nerve (8th cranial nerve), passes through the brainstem, and then reaches the branched path of the cochlear nucleus: the ventral cochlear nucleus or the dorsal cochlear nucleus. The nerve signal that passes through the ventral cochlear nucleus will reach the superior olive in the medulla where differences in timing and loudness of sound are compared, and location of the sound's origin is pinpointed (1). The nerve signal that crosses the dorsal cochlear nucleus ultimately is analyzed for sound quality.
It is something that I began dealing with in the last two years while in school and it has had a strong effect on me. Unfortunately, my reaction was to ignore this problem and persist through my studies. I am no longer ignoring my hearing damage. I am now consulting with an ENT/audiologist and working with FAU accessibility office. I have also recently learned that there is an audiologist on the FAU campus and I'm looking forward to meeting with them.
Today’s society consists of numerous individuals who are diagnosed with disabilities that prevent them from partaking in their everyday tasks. Not everyone gets the chance to live a normal life because they might have a problem or sickness that they have to overcome. Deafness is a disability that enables people to hear. All deafness is not alike; it can range in many different forms. Some people like Gauvin, can be helped with a hearing aid, but some can’t because of their situation and health reasons. In society, hearing individuals consider deafness a disability, while the deaf themselves see it as a cultural significance. In the article “Victims from Birth”, appearing in ifemnists.com, Founding Editor Wendy McElroy, provides the story of
The current hypothesis is that one of my genes is a mutated gene, that mutated gene is what is causing my hearing loss. If this is the real reason why I have hearing loss, there is also worry for what other problems does this mutated gene cause. With finding a mutated gene, they will most likely be able to predict how much worse my hearing will get. Another possible but not likely cause is a tumor, currently, I have to get an MRI to make sure that there is no growth inside of my head. If there is a growth, that will lead to some serious issues. The last possible cause is that loud noises have damaged my hearing, but it is even more less likely than a tumor. I am almost never exposed to loud music, concerts, or anything of that nature, which would causes hearing loss. Since I've been losing hearing since I was 5, they have practically ruled that one out because it makes no
Hearing loss is often overlooked because our hearing is an invisible sense that is always expected to be in action. Yet, there are people everywhere that suffer from the effects of hearing loss. It is important to study and understand all aspects of the many different types and reasons for hearing loss. The loss of this particular sense can be socially debilitating. It can affect the communication skills of the person, not only in receiving information, but also in giving the correct response. This paper focuses primarily on hearing loss in the elderly. One thing that affects older individuals' communication is the difficulty they often experience when recognizing time compressed speech. Time compressed speech involves fast and unclear conversational speech. Many older listeners can detect the sound of the speech being spoken, but it is still unclear (Pichora-Fuller, 2000). In order to help with diagnosis and rehabilitation, we need to understand why speech is unclear even when it is audible. The answer to that question would also help in the development of hearing aids and other communication devices. Also, as we come to understand the reasoning behind this question and as we become more knowledgeable about what older adults can and cannot hear, we can better accommodate them in our day to day interactions.
When sound waves strike these folds they act as reflectors, sound is vacuumed into the ear canal, which is basically a sound amplifier, and processed by the brain. Another function of the Pinna is to correlate from which direction the sound originated from. When the sound waves finally impact the ear drum, which is located in the middle ear, the information from those waves goes to an air filled cavity by the three fragile Ossicle bones, also known as the hammer, anvil, and stirrup. What they do is take incoming sound vibrations which are striking the ear drum and transform it into a higher pitched vibration, and from there travel into what is known as the oval window. After moving through this window instead of air the waves are met by liquid which is why the frequency change was needed in the middle ear. The main instruments in the inner ear is the Cochlea which is shaped almost like a snail, this is where the sensory info is turned into neural messages. They do this by utilizing the Corti which has inner hair cells that take vibrations and transform them into electrical neural signals, the hairs supply nerves for the fibers which make up the auditory nerve in
Along with vision, hearing is one of the most important senses that humans have. We use it to communicate, learn, and stay aware of our environment. In fact, hearing is the only sense that never stops receiving sensory input. While all of our other senses become drastically less sensitive when we are sleeping, our brain still processes auditory information to awaken us the second something is wrong. Although this may have been more practically used before people slept safely in homes, it’s still useful for hearing a fire alarm or our alarm clock in the morning. We are able to hear by processing sound waves. This energy travels through the delicate structures in our ears to be transformed into neural activity so that we can perceive the sensory information we receive (Myers, 2010).
Millions of people deal with Alzheimer's and hearing loss. Several studies have confirmed the link between hearing loss and Alzheimer's. The risk of developing Alzheimer's increases as hearing loss grows worse. Researchers compared people with hearing loss to people who do not have hearing loss. When compared to people with normal hearing, people with mild hearing loss are almost twice as likely to develop Alzheimer's. People who have a severe hearing impairment have a higher risk of developing the disease. Specifically, hearing loss is common in people who have a hearing impairment that is greater than 25 decibels. Senior citizens are most likely to be at risk for hearing loss and Alzheimer's.
Sound, music, and hearing have always been a big part of my life. As a lifelong musician, I value my hearing a lot. After playing music on stage at high volume for more than 15 years, I experienced a nasty tinnitus scare. This led me to begin looking into how to protect my hearing. These steps included reducing each member’s volume as well as the overall stage volume so we were able to hear ourselves with less volume. Eventually, with the adoption of in-ear monitors (IEMs) across the band to manage volume on stage and to isolate our own channels (from the drums, especially), I was able to protect my hearing more, and the tinnitus eventually became manageable. This experience led me to realise the importance of protecting my hearing as well
For this assignment, our class was instructed to spend two to three days with impaired hearing. To do this, I obtained some regular green foam ear plugs and wore them while going about my daily routine. The plugs gave me a decent 30dB loss in my “mid” and “upper” frequencies. At first, I did not see how it would be possible to walk around with ear plugs in all day. I started to think what my other instructors would think, but being an audio arts and acoustics major, most hardly batted an eye. Truthfully, I thought I would put my plugs in when I wanted to jot notes down for my journal, but that was not the case. My ears became acclimated to the loss and I could keep them in for most the day. The purpose of this exercise was to reinforce the point our professor had been teaching us all semester; living with hearing impairment is possible, but incredibly challenging.