Comparison of otoacoustic emissions in tinnitus and hyperacusis in adults with normal hearing sensitivity.

Objective: To investigate the effect of tinnitus and/or hyperacusis on distortion product otoacoustic emission (DPOAE) measures in adults with normal hearing thresholds from 0.25 to 8 kHz, while accounting for extended high-frequency (EHF) thresholds.

Design: A behavioural study consisted of comprehensive audiological assessment, validated tinnitus and hyperacusis questionnaires, DPOAE amplitudes and input/output (I/O) functions.

An online survey study of the association between tinnitus and hyperacusis using validated questionnaires.

Objective: To investigate the association between the highly comorbid tinnitus and hyperacusis conditions using standard questionnaires.

Design: A cross-sectional internet-based survey consisted of general demographic questions, questions about hearing and emotional status, Tinnitus Primary Function Questionnaire (TPFQ), and Hyperacusis Questionnaire (HQ).

Study Sample: Six hundred sixteen completed surveys were obtained primarily from students and staff in a large university.