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Auditory neuropathy/auditory dyssynchrony (AN/AD) is a condition that affects the neural processing of auditory stimuli. Patients with AD/AN are able to respond to sounds accurately but their ability to decode speech and language is affected. AN/AD has only recently been described. In the late 1970s, clinical investigators began to describe groups of patients with normal or slightly elevated audiogram pure tone thresholds accompanied with absent or severely abnormal auditory brainstem responses (ABRs). With the advent of the otoacoustic emissions (OAEs) in the mid 1980s, these groups of patients were found to have normal cochlear function. The finding of normal cochlear function accompanied with abnormal brainstem responses was defined in 1996 as auditory neuropathy (AN). Whether this represents a true auditory nerve neuropathy is debatable. Further investigations led to the conclusion that AN may truly represent a dyssynchronous auditory nerve rather than a neuropathy. This finding gave rise to the newer term of auditory dyssynchrony (AD). [1] For the purposes of this summary, AN and AD are considered synonymous (ie, AN/AD). Now a days this condition commonly known as Auditory Neuropathy Spectrum Disorder (ANSD). Rather than just considering a condition some of researchers have labeled as syndrome. Treatment for ANSD is varies case to case and needs lot of trial and error method. Hearing aids have been effective of some of the cases where as cochlear implant is also being recommended strongly and found to be effective. Very short number of cases donot really benefits from above two option those advised to use communication strategies to be able to understand speech.
Voice Disorders Voice disorders are medical conditions involving abnormal pitch, loudness or quality of the sound produced by the larynx and thereby affecting speech production. Disorders are categorized in organic, psychogenic, functional and neurological. organic are vocal cord nodules, cysts, polys etc functional meaning voice box is normal but mechanism is being used improperly or inefficiently. psychogenic means due to some reason patient is unable to produce the voice in spite of normal laryngoscopy findings neurological disorders involves palsy, paresis, spasmodic dysphonia, Parkinson disease, other neurological diseases #Voice Therapy # ENT evaluation # Voice Evaluation
Cleft and Hearing Loss The hearing loss in a cleft patient is a well known documented, but generally gets ignored. These children continue to have recurrent otitis media with effusion that affects the hearing abilities. Unfortunatley the middle ear function may not improve with palatoplasty. Cleft palate teams need to follow up all such children beginning at birth and going into adulthood, decades after a ‘successful’ palate repair. These patients should have careful otological and audiological surveillance with appropriate interventions whenever required. untreated and fluctuating hearing loss has impact on speech, language, social an academic progress. # pure tone audiogram, impedance testing, brainstem evoked response
Auditory Deprivation February 3, 2014 By Bob Page, Clinician What it is and how to protect yourself from its effects Auditory Deprivation Without treatment, you can have permanent and irreversible hearing loss Auditory Deprivation is a condition that occurs in individuals suffering from hearing loss where their brain loses the ability to interpret words due to a lack of stimulation over an extended period of time. This condition can affect hearing loss patients who do not wear hearing aids, wear old hearing aids or only wear one hearing aid when two may be necessary. Even those suffering from a mild hearing loss can be affected by this condition. If hearing loss is not treated, auditory deprivation can cause an irreversible loss of functionality. How does this happen? You must first understand the difference between hearing and understanding. Your ears function as instruments to collect sounds and deliver these sounds to your brain. The speech interpretation center of your brain processes these sounds into words. If your ears cannot hear the sounds, then your brain does not have anything to process. The lack of stimulation in this area of the brain causes you to lose the functionality of understanding speech. So, basically if you aren’t hearing the words, you eventually lose the ability to understand them. When our vision starts to fade, we usually wait to seek professional help until we absolutely need it. Any delay in seeking help is not usually a problem because glasses are able to correct the problem immediately. Treatment for hearing loss is quite different. The longer you delay seeking treatment for your hearing loss, the harder it will be to treat it. Those with profound hearing loss who have suffered for a number of years may not be able to regenerate some of their speech perception. However, most hearing losses can be sufficiently amplified with the use of hearing aids to allow for near normal to normal hearing. Hearing aids will help your ability to hear and thus, stimulate your brain to protect you from auditory deprivation. Auditory deprivation is not a guarantee if you suffer from hearing loss as long as you are proactive with your hearing health. Have your hearing tested, and if necessary find the appropriate treatment sooner rather than later. Hearing aids can be a tremendous help by providing the necessary stimulation your brain requires to continue to understand everyday speech. Auditory Deprivation is a “use it or lose it” issue, so it is imperative that you are take action today to ensure your ability to perceive speech does not continue to deteriorate over time.
HYPERACUSIS: Hyperacusis is a hearing disorder characterized by an increased sensitivity to certain frequencies and volume ranges of sound. In such condition patients can hear at 10dB sound but can not tolerate 70-80dB sound. dynamic range for hearing is decreased. It is seen in children as well as adults. treatment for hyperacusis is really questionable. sound therapy is some what most suitable option. #hearing therapy #hearing aids