Influence of Acquisition Parameters on the Measurement of Click Evoked Otoacoustic Emissions in Neonates in a Hospital Environment

Neonatal hearing screening: A combined click evoked and tone burst otoacoustic emission approach

“…1 kHz TBOAEs were more robust than CEOAEs in terms of emission response level and SNR at comparable frequency components, for both 1 and 1.5 kHz. This finding was consistent with other reports comparing TBOAEs and CEOAEs in both adult and newborn populations [5,31,[35][36][37]43]. The values can be used as normative data for screening and diagnostic purposes in the neonatal population.…”

“…1) [30,31]. To resolve this, tone burst evoked OAEs (TBOAE) may be a promising supplement to the conventional CEOAE screening technique, since tone burst stimuli can elicit a more frequency-specific response [32,33].…”

Neonatal Hearing Screening: Evaluation of Tone-Burst and Click-Evoked Otoacoustic Emission Test Criteria

“…This is noise generated by basic physiological processes and is the main source of noise in neonatal OAE measures (Norton et al, 2000). The recorded noise floor in the neonatal ear canal is higher than in adults when measures are taken in the same environment (Welch, Greville, Thorne, & Purdy, 1996). To minimize the adverse effects of ear canal noise on OAE recordings, and hence reduce false-positive screening outcomes, a number of approaches have been developed.…”

Click-evoked otoacoustic emissions (CEOAEs) recorded from neonates under 13 hours old using conventional and maximum length sequence (MLS) stimulation

“…In order to detect them, a combination of averaging and noise rejection is required to obtain an adequate signal-to-noise-ratio (SNR). The main source of noise is thought to be subject-generated, which is high in neonates (Popelka et al, 1998;Welch et al, 1996), in whom it is also more difficult to average over long periods without interruptions.…”