| http://www.w3.org/ns/prov#value | - As a possible complication of NIHL, tinnitus is usually observed at frequencies equal to or higher than 3000???Hz, which is one octave band higher than the frequencies affected in NIHL. Its intensity is usually between 3 and 5???dB (occasionally up to 15???dB) [5].Tinnitus may lead to such complications as depression, irritability, sleep disorders, and loss of concentration [6].
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