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Author: admin, 11.07.2014. Category: Ring In The Ears

Scientific research over the years has shown that studying music has many rewards, from improving performance in school to dealing with emotional traumas, but the newest research shows that it can do even more than that. Think of musical figures who have had long careers -- from Mick Jagger to Paul McCartney to Barbara Cook -- and it appears there's something, beyond love of their art, that has kept them going. Nina Kraus's Auditory Neuroscience Laboratory at Northwestern University in Evanston, Il., has been studying how music affects the human brain for years now, and the latest study from that busy lab shows that musicians suffer less from aging-related memory and hearing losses than non-musicians.
Kraus and her colleagues attached electrodes to the heads of 87 persons ranging in age from 18 to 65, all of whom had normal hearing. The purpose of the electrodes was to measure what neurologists call "neural timing," or how long it takes for a human brain to process an auditory signal. The electrodes provided a "very objectively quantifiable" measurement of that processing time, which would normally be expected to be considerably slower in older persons than younger. Older participants in the study who had made music a big part of their lives could process the signal just about as fast as the younger participants.
Both of those talents tend to decline with age, which is why so many older persons complain of memory lapse and an inability to hear someone in a noisy place. And loud noises, like gunshots, shop tools, or the screaming shockwaves from acid rock, can all damage hearing. Kraus, whose latest study is in the online edition of the journal Neurobiology of Aging, says the research shows that it's not just hearing that is helped by music. Sensorineural hearing loss involves problems with the transmission of sound information from hair cells deep within the ear to the nerve that sends sound information to the brain.
The term "deaf" generally applies to a person whose hearing loss is so extensive that he or she cannot communicate with another person using only voice. 0 to 3 months — The child blinks, startles, moves with loud noises, and quiets down at the sound of the parent's voice. 4 to 6 months — The child turns his or her head to the side toward voices or other noises, and makes musical sounds ("ooh," "ah"). 7 to 12 months — The child turns his or her head in any direction toward sounds, babbles ("ba," "ga," "bababa," "lalala," etc.), and says "mama," "dada" (though not specific to mom or dad). 13 to 15 months — The child points; uses "mama," "dada" correctly, and follows one-step commands. 19 to 24 months — The child points to body parts when asked, puts two words together ("want cookie," "no bed"). Auditory brain stem response (also called brainstem auditory evoked potential) — In this test, sensors are stuck to the scalp to record electrical signals from nerves involved in hearing.


Wear protective devices such as earmuffs, form-fitting foam earplugs or pre-molded earplugs when unable to avoid exposure to loud noises. In most cases, a child needs a full developmental, speech and language evaluation before treatment is planned.
Another treatment option for severe or profound sensorineural hearing loss is a cochlear implant. Children with significant hearing loss also can learn sign language and lip reading to communicate with others. You should call a doctor if you have any concerns that an infant or child cannot hear normally. Disclaimer: This content should not be considered complete and should not be used in place of a call or visit to a health professional.
The easiest way to lookup drug information, identify pills, check interactions and set up your own personal medication records. It can fine tune the human brain, biologically and neurologically enhancing its performance and protecting it from some of the ravages of time. It is believed to be the first study to provide biological evidence that lifelong musical experience has a good impact on the aging process, according to Northwestern, where Kraus serves as professor of neurobiology, physiology and communication sciences. About half the subjects had started taking music lessons before the age of nine, and had remained active in music throughout their lives. The normal aging process slows that timing, making it more difficult to process sounds, even the sound of a friend's voice in a crowded restaurant, Kraus said in a telephone interview.
The "non musicians," however lagged considerably behind, indicating that playing a musical instrument was crucial to retaining memory and hearing. But this work suggests it doesn't decline, if playing a musical instrument is a personal passion over time. The inner ear physically changes with age, and the tiny hairs that act as acoustic antennae inside the ear canal deteriorate. The child listens to sounds of various volume and frequency through earphones in a soundproof room. The signals are studied to give information about hearing and hearing-related brain function.
Irreversible damage can result from prolonged exposure to sounds not much louder than normal speech. For example, middle-ear infections and the associated fluid buildup can be treated and the child's hearing can be monitored.


This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. You are always pulling out meaningful components from sound and that's really not all that different from hearing your friend's voice in a noisy restaurant. And only the "musicians" showed measurable signs of overcoming the tendency of the human brain to gradually slow down the time it takes to receive, process and act upon an auditory signal. The failure to identify and treat hearing loss by 6 months of age can have serious implications for a child's speech.
Hearing loss often is discovered when a child is being evaluated for difficulty with school performance or behavior. This test is used to screen newborns or to test children unable to cooperate with other methods.
Treating a child before 6 months of age can make a huge difference in language and speech development. It also can be used to confirm hearing loss or to give ear-specific information after other screening tests have been done. If your baby does not pass the screening test, a specialist should evaluate your child's hearing as an outpatient. Cochlear implants are approved in the United States for use in children older than 12 months of age. Sometimes this type of hearing loss is caused by physical abnormalities that are present from birth.
Causes include prolonged exposure to loud noise, infection, severe head injury, toxic medications and some rare inherited diseases. In children less than 2? years old, audiometry is also used as a rough screening test to rule out significant hearing loss. Young children often need to be sedated during this test so that their movements don't interfere with the recording. If a hearing problem is found, it should be confirmed with the auditory brain stem response test.
Other causes include perforation of the eardrum, impacted earwax or objects in the ear canal.



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