6533b7d7fe1ef96bd12684c1

RESEARCH PRODUCT

DPOAE‐Grams in Patients with Acute Tonal Tinnitus

Jan MaurerWolf J. MannHaralampos Gouveris

subject

AdultMalemedicine.medical_specialtySound SpectrographyAdolescentHearing lossHearing Loss SensorineuralLoudness PerceptionOtoacoustic Emissions SpontaneousAudiologyFunctional LateralityTinnitus03 medical and health sciences0302 clinical medicineReference Valuesotorhinolaryngologic diseasesmedicineHumansIn patientProspective StudiesPitch Perception030223 otorhinolaryngologyOuter hair cellsCochleaAgedAbsolute threshold of hearingbusiness.industryAuditory ThresholdMiddle AgedHair Cells Auditory Outermedicine.anatomical_structureAcoustic StimulationOtorhinolaryngology030220 oncology & carcinogenesisReference valuesAcute DiseaseFemaleSurgerysense organsHair cellmedicine.symptombusinessTinnitus

description

To investigate cochlear outer hair cell function in patients with acute tonal tinnitus and normal or near-normal hearing threshold.Prospective controlled study in an academic tertiary health center. Distortion products of otoacoustic emissions (DPOAE)-grams of 32 ears with acute tonal tinnitus and normal hearing or minimal hearing loss were compared with those of 17 healthy nontinnitus ears.Tinnitus ears exhibited relatively increased amplitudes of DPOAE at high frequencies (4-6.3 kHz) when compared with the group of healthy ears and relatively decreased DPOAE amplitudes at middle frequencies (1650-2400 Hz). Statistically significant ( P0.01) increased mean values of DPOAE amplitudes were observed only at a frequency of f2 equal to 4.9 kHz.These findings suggest an altered functional state of the outer hair cells at a selected high-frequency region of the cochlea in ears with acute tonal tinnitus and normal or near-normal hearing threshold.

yearjournalcountryeditionlanguage
2005-04-05Otolaryngology–Head and Neck Surgery
https://doi.org/10.1016/j.otohns.2004.09.031