28 Mayıs 2012 Pazartesi

Ear Health (Hearing)


There has not been extensive research in our country, but a study conducted in the United States to understand normal speech in one of every ten Americans was found to be enough to prevent hearing loss. "Exposure to loud noise," the most common cause. "Noise" Can I really damage my ears? Yes, the noise can be dangerous. If loud enough and long term may damage your hearing. Damage caused by noise, called the nerve-type hearing loss, can lead to many reasons, but this type of noise induced hearing loss is an important privilege without-progression can be stopped or prevented entirely.
Can I practicing my ears?
No. If you got used to it in another state it is wrong to always grew up with the noise. Reduced noise and hearing no medication, surgery or hearing aids can not fix damage to the noise in his ear.
Ear How It Works?
The outer ear, middle and inner being is composed of three main parts. The outer ear, pinna and external ear occurred. The ear drum separates the outer ear and middle ear. Transmission of sound waves to the inner ear in the middle ear ossicular provide three small. Starts in the inner ear and auditory nerve carries the sound to the brain.
Any audio source, or vibrations, sends sound waves into the air. They zarınızı external ear through the eardrum to vibrate and crash. Vibrations through the middle ear ossicles to the inner ear, auditory nerve of the receivers. Where vibrations are transformed into nerve and brain related to warnings sent to the region. The brain, the sound "music, a slamming door, the human voice as" separating the comments.
If very severe noise begins to kill nerve cells in the inner ear. Kalındıkça longer exposed to noise greater auditory nerve damage. The lower number of nerves in the hearing nerve of hearing is reduced. Is not possible to bring back to life to dead nerve cells, damage is permanent.
How do I know the noise harmful?
Changes people's sensitivities to noise.In general, noise may damage hearing following conditions:* If you live you have to shout to hear yourself* Creates noise in your ear pain* Happens ear tinnitus* If you are as deaf to light a few hours after exposure to noise.
Sound can be measured scientifically in two ways. Density or intensity of sound that the "decibel" is expressed in. The frequency of sound is the number of vibrations per second. Sound, at low frequencies, "thick (give up)", at high frequencies "fine (high pitched)" is heard.
Hearing my voice Kaybımla Frequency What is the relevance?
Frequency is expressed in vibrations per second. Children with the best level of hearing, can hear sounds between about 20 and 20,000 vibrations.
Human voice frequency between 300 and 4000 and between people hear sounds better than others. Before the hearing starts, the first high frequency hearing loss, reduced work fine voice for this reason, people are forced to Hearing voices of women and children.
Losses at higher frequencies, the sound can disrupt the structure, so people have difficulty understanding exactly what they heard, even işitse. Those often have difficulty distinguishing sounds of similar hearing loss.
What is a decibel?
Intensity of sound measured in decibels (dB) is measured in. "0" is considered to be the lowest volume in decibels human hearing. "180" is measured in dB, the sound of the rocket during the launch.
Decibels logarithmic increases and decreases. What this means. 20 dB, 10 dB to 10 times more severe. 30 dB, 10 decibels is 100 times more severe.

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