A connection between the Efferent Auditory System and Noise-Induced Tinnitus Generation. Reduced contralateral suppression of TEOAEs in patients with noise-induced tinnitus.

Background: Subjective tinnitus is an auditory perception that is not caused by external stimulation, its source being anywhere in the auditory system. Furthermore, evidence exists that exposure to noise alters cochlear micromechanics, either directly or through complex feed-back mechanisms, involving the medial olivocochlear efferent system. The aim of this study was to assess the role of the efferent auditory system in noise-induced tinnitus generation.

Sensorineural hearing loss and word deafness caused by a mesencephalic lesion: clinicoelectrophysiologic correlations.

Objective: To assess the role of inferior colliculi as a generator of Wave V of brainstem auditory evoked potentials and in modulating the olivocochlear efferent auditory system.

Study Design: Case review.

Setting: University and tertiary referral centers.

The efficacy of medication on tinnitus due to acute acoustic trauma.

Seventy-two young males suffering from acute acoustic trauma with tinnitus due to gunshots were included prospectively in the study. Forty of the subjects had the left ear affected, four the right ear and the remaining 28 sustained bilateral acoustic traumas. The mean time of admission after onset of symptoms was 28 days (5-88 days).

Transiently evoked otoacoustic emissions as a prognostic indicator in idiopathic sudden hearing loss.

Idiopathic sudden sensorineural hearing loss (ISHL) remains a controversial topic. So far, there are no proven objective auditory factors to establish prognosis. Otoacoustic emissions reflect the functional integrity of the outer hair cells.