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Some observations on the nature of the audiometric 4000 hz ...
https://pubmed.ncbi.nlm.nih.gov/21419067/#:~:text=A%20notch%20was%20defined%20when%20the%204000%20Hz,notches%2C%2028.8%25%20LE%20notches%2C%20and%2027.1%25%20RE%20notches.
Some observations on the nature of the audiometric 4000 …
https://pubmed.ncbi.nlm.nih.gov/21419067/
A notch was defined when the 4000 Hz threshold minus the 2000 Hz threshold and the 4000 Hz threshold minus the 8000 Hz threshold both were ≥10 dB. Results: A notched audiogram was observed in 40.6% of the participants in at least one ear with 15.4% having bilateral notches, 28.8% LE notches, and 27.1% RE notches.
Determinants of the Audiometric Notch at 4000 and 6000 …
https://pubmed.ncbi.nlm.nih.gov/32746483/
Determinants of the Audiometric Notch at 4000 and 6000 Hz in Young Adults The calibration error in the RESPLs at 6000 and 8000 Hz that are likely to be influenced by the shorter EAC was the major determinant of the notched audiograms when the supra-aural transducers were used to measure hearing thresholds.
Characteristics of the audiometric 4,000 Hz notch …
https://pubmed.ncbi.nlm.nih.gov/23516088/
A notch was defined when the threshold at the notch frequency (3,000, 4,000, or 6,000 Hz) minus the 2,000 Hz threshold and the threshold at the notch frequency minus the 8,000 Hz threshold both were greater than or equal to 10 dB. In group 1, 77.1% did not have a notch at 4,000 Hz.
Characteristics of the audiometric 4,000 Hz notch …
https://www.rehab.research.va.gov/jour/2013/501/wilson501.html
Characteristics of the audiometric 4,000 Hz notch (744,553 ...
https://www.rehab.research.va.gov/jour/2013/501/pdf/page111.pdf
In that study, notched audiograms at 4,000 Hz were observed in 41.1 percent of the participants in at least one ear, with 15.4 percent having bilateral notches ( auris utraque [AU] or “both ears”), 13.8 percent having unilateral left ear (LE) notches, …
Noise-Induced Hearing Loss - American Family Physician
https://www.aafp.org/afp/2000/0501/p2749.html
A confirmatory audiogram taken by an audiologist showed a sensorineural loss in a “notch” pattern at 4,000 Hz ( Figure 1). In response to questioning, the girl reported spending several hours a day...
Noise -induced Hearing Loss - CAOHC
https://www.caohc.org/pdfs/ACOEM%20noise%20induced%20hearing%20loss.pdf
Typically, the first sign of hearing loss due to noise exposure is a “notching” of the audiogram at 3000, 4000, or 6000 Hz, with recovery at 8000 Hertz (Hz). 2 The exact location of the notch depends on multiple factors including the frequency of …
A clinician’s guide to noise-induced hearing loss - WCB
https://www.wcb.ab.ca/assets/pdfs/providers/HCP_Hearing_loss.pdf
• The first sign of ONIHL is a notch on the audiogram at 3000, 4000 or 6000 Hz with recovery at 8000 Hz. • The notch initially develops at 3000, 4000 or 6000 Hz and affects adjacent frequencies with continued noise exposure. As exposure continues, the notch gradually deepens and widens. • In the early stages of NIHL, the average hearing
Clinical and audiological characteristics of 1000Hz ...
https://pubmed.ncbi.nlm.nih.gov/28532971/
Purpose: Among the hearing loss patients, we can confirm that the hearing loss of the specific frequency decreases, such as the 2000Hz notch in otosclerosis and the 4000Hz notch (c5-dip) in noise-induced hearing loss. The 1000Hz notch (c3-dip), however, is rarely studied. We fortuitously encountered a group of patients with a 1kHz hearing loss and report it with a review of the …
Clinical and Audiological Characteristics of 1000 Hz ...
https://www.researchposters.com/Posters/AAOHNSF/AAO2016/SP282.pdf
at 2000 Hz in the bone-conduction audiogram of patients with otosclerosis, and the notch at 4000 Hz, which often presents in the case of noise-induced hearing loss. Since there has been no specific report of a notch at 1 000 Hz, our group investigated the clinical and audiological characteristics of patients who had this audiogram.ients often 1.
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