PMID: 8600131Sep 1, 1995Paper

Distortion product otoacoustic emissions in Macaca mulatta and humans

Hearing Research
R E LaskyK E Hecox

Abstract

Distortion product otoacoustic emissions (DPOAEs) were compared in eight rhesus monkeys (Macaca mulatta) and eight normal hearing humans. DPOAEs were recorded in three conditions. In the first condition, DPOAEgrams were generated for monkeys and humans from approximately f2 = 0.5-20 kHz. Monkeys had larger amplitude DPOAEs at all frequencies except around f2 = 1 kHz. In the second condition, DPOAE amplitudes increased and then decreased as the separation between the primaries increased. These functions were similar in the two species except at the lowest frequencies assessed. In the third condition, the levels of the primaries were varied independently. Monkeys had steeper input/output (I/O) functions than humans. The slopes of DPOAE I/O functions increased with frequency in both species. When the levels of both primaries were increased simultaneously, DPOAE I/O functions were well described by power functions throughout the intensity range assessed (from threshold to 65 dB SPL). Monkey I/O functions tended to be expansive power functions at all but the lowest frequencies, while human I/O functions tended to be compressive power functions except at the highest frequencies assessed. Other differences in I/O functions f2 = 8 kHz ...Continue Reading

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Citations

Apr 5, 2000·Hearing Research·P Torre, C G Fowler
Jan 17, 2002·Neurotoxicology and Teratology·R E LaskyN Laughlin
Feb 28, 1998·The Journal of the Acoustical Society of America·R E Lasky
May 9, 2006·Hormones and Behavior·Dennis McFaddenKim Wallen
Feb 28, 1998·The Journal of the Acoustical Society of America·R E Lasky
Jun 25, 2017·Journal of the Association for Research in Otolaryngology : JARO·Chenkai DaiCharles C Della Santina
Jan 5, 2002·Audiology : Official Organ of the International Society of Audiology·P TorreC G Fowler
Dec 5, 2019·The Journal of the Acoustical Society of America·Jane A BurtonRamnarayan Ramachandran
Jul 6, 2000·Audiology : Official Organ of the International Society of Audiology·R E LaskyN K Laughlin
Feb 23, 2021·International Journal of Audiology·Uzma Shaheen WilsonSumitrajit Dhar

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