The effects of aging and hearing loss on distortion product otoacoustic emissions

Cilento, Benjamin W.; Norton, Susan J.; Gates, George A.

doi:10.1016/s0194-5998(03)00637-5

Cited by 25 publications

(17 citation statements)

References 18 publications

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“…DPOAEs are believed to reveal subtle cochlear changes that may be overlooked by audiometry. 30,31 Studies show that aging males experience greater decreases in DPOAEs amplitudes compared to aging females. This decrease in DPOAEs is often proportional to the degree of hearing loss.…”

Section: Vestibular Systemmentioning

confidence: 99%

Effects of Sex and Gender on Adaptation to Space: Neurosensory Systems

Reschke

Cohen²,

Cerisano³

et al. 2014

Journal of Women's Health

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Sex and gender differences have long been a research topic of interest, yet few studies have explored the specific differences in neurological responses between men and women during and after spaceflight. Knowledge in this field is limited due to the significant disproportion of sexes enrolled in the astronaut corps. Research indicates that general neurological and sensory differences exist between the sexes, such as those in laterality of amygdala activity, sensitivity and discrimination in vision processing, and neuronal cell death (apoptosis) pathways. In spaceflight, sex differences may include a higher incidence of entry and space motion sickness and of post-flight vestibular instability in female as opposed to male astronauts who flew on both short- and long-duration missions. Hearing and auditory function in crewmembers shows the expected hearing threshold differences between men and women, in which female astronauts exhibit better hearing thresholds. Longitudinal observations of hearing thresholds for crewmembers yield normal age-related decrements; however, no evidence of sex-related differences from spaceflight has been observed. The impact of sex and gender differences should be studied by making spaceflight accessible and flying more women into space. Only in this way will we know if increasingly longer-duration missions cause significantly different neurophysiological responses in men and women.

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Section: Vestibular Systemmentioning

confidence: 99%

Effects of Sex and Gender on Adaptation to Space: Neurosensory Systems

Reschke

Cohen²,

Cerisano³

et al. 2014

Journal of Women's Health

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“…8 The results of the present study showed a general decrease in SOAE levels with age, but not a consistent and uniform decrease in all SOAE levels as was the case for SOAE frequency. Studies on evoked OAE levels as a function of age in adults show little consensus in the results ͑e.g., Cilento et al, 2003͒. Some studies show a decrease in OAE levels with age, which are independent of changes in hearing threshold, and others do not.…”

Section: A Long-term Frequency Shiftsmentioning

confidence: 99%

Long-term stability of spontaneous otoacoustic emissions

Burns

2009

The Journal of the Acoustical Society of America

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Spontaneous otoacoustic emissions ͑SOAEs͒ were measured longitudinally for durations up to 19.5 years. Initial ages of the subjects ranged from 6 to 41 years. The most compelling finding was a decrease in frequency of all emissions in all subjects, which was approximately linear in %/year and averaged 0.25%/year. SOAE levels also tended to decrease with age, a trend that was significant, but not consistent across emissions, either within or across subjects. Levels of individual SOAEs might decrease, increase, or remain relatively constant with age. Several types of frequency/level instabilities were noted in which some SOAEs within an ear interacted such that their levels were negatively correlated. These instabilities often persisted for many years. SOAEs were also measured in two females over the course of their pregnancies. No changes in SOAE levels or frequencies were seen, that were larger than have been reported in females over a menstrual cycle, suggesting that levels of female gonadal hormones do not have a significant direct effect on SOAE frequencies or levels.

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“…DPOAE are reduced or absent when the mobility of the OHC, which is the source of OAE generation, is impaired by damage to those cells 15 . Some previous studies demonstrated that DPOAE incidence greatly differed depending on age 16 gender and hearing level.…”

Section: Discussionmentioning

confidence: 99%

“…Reduction in OAE is known to follow decreased task of the stria vascularis and to follow hair cell loss 16 . Consequently, as audiometric thresholds worsen, the amplitude of the DPOAE response decreases and finally disappears 19 .…”

Section: Discussionmentioning

confidence: 99%

“…Consequently, as audiometric thresholds worsen, the amplitude of the DPOAE response decreases and finally disappears 19 . Cilento et al 16 shown that women lose DPOAE amplitude from age and hearing losses, with men loosing more amplitude than women. Cilento et al also concluded that the loss in amplitude is related to the degree of hearing loss.…”

Section: Discussionmentioning

confidence: 99%

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