This study investigated the effect of selective attention on the distortion-product otoacoustic emission (DPOAE) level through the use of environmentally meaningful, contralateral auditory stimuli. Four different conditions were used for measurement: quiet, contralateral noise, contralateral speech (unattended), and contralateral speech (attended). A statistically significant suppression effect...

Noise exposure was assessed in college students using dosimeters. Hearing sensitivity was measured using pure-tone thresholds and distortion product otoacoustic emissions. Results indicate music majors are exposed to higher levels of noise due to rehearsal compared to their non-music major peers.

UNLABELLED Mismatch Negativity (MMN) is used to evaluate the central auditory system. AIM to characterize the MMN, in normal subjects. MATERIALS AND METHODS prospective study, 12 subjects, six males and six females, between the ages of 18 and 24. "Mann-Whytnei" test. EXAMS: Pure Tone Audiometry (PTA), Tympanometry, Otoacoustic Emissions and Short and Long Latency Auditory Potentials (MMN). ...

Distortion-product otoacoustic emissions (DPOAEs) were measured in a New World primate, the common marmoset (Callithrix jacchus). We determined the optimal primary-tone frequency ratio (f(2)/f(1)) to generate DPOAEs of maximal amplitude between 3 and 24 kHz. The optimal f(2)/f(1), determined by varying f(2)/f(1) from 1.02 to 1.40 using equilevel primary tones, decreased with increasing f(2) fre...