Hearing Levels of a Suburban Jamaican Population

Hinchcliffe, R.; Jones, W. I.

doi:10.3109/05384916809074330

Cited by 12 publications

(11 citation statements)

References 18 publications

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“…Importantly, over a long period of time both positive and negative effects may be brought about by moderate levels of sound. These sorts of effects might have implications for observations that audiograms obtained from older women may show higher thresholds for low-frequency tones than men, even though men have worse high-frequency hearing (Glorig, 1957;Hinchcliffe and Jones, 1968;Moscicki et al, 1985). Mean ABR thresholds for mice used in the LAAE experiments at age 9 months.…”

Section: Discussionmentioning

confidence: 99%

Effects of exposing C57BL/6J mice to high- and low-frequency augmented acoustic environments: Auditory brainstem response thresholds, cytocochleograms, anterior cochlear nucleus morphology and the role of gonadal hormones

et al. 2008

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Gonadectomized and intact adult C57BL/6J (B6) mice of both sexes were exposed for 12 hours nightly to an augmented acoustic environment (AAE): repetitive bursts of a 70 dB SPL noise band. The high-frequency AAE (HAAE) was a half-octave band centered at 20 kHz; the low-frequency AAE (LAAE) was a 2-8 kHz band. The effects of sex, gonadectomy, and AAE treatment on genetic progressive hearing loss (a trait of B6 mice) were evaluated by obtaining auditory brainstem response (ABR) thresholds at ages 3-, 6-, and 9-months. At 9-months of age, hair cell counts (cytocochleograms) were obtained, and morphometric measures of the anteroventral cochlear nucleus (AVCN) were obtained. LAAE treatment caused elevation in ABR thresholds (8-24kHz), with the highest thresholds occurring in intact females. LAAE treatment caused some loss of outer hair cells in the basal half of the cochlea (in addition to losses normally occurring in B6 mice), with intact females losing more cells than intact males. The loss of AVCN neurons and shrinkage of tissue volume that typically occur in 9-month-old B6 mice was lessened by LAAE treatment in intact (but not gonadectomized) male mice, whereas the degenerative changes were exacerbated in intact (but not gonadectomized) females. These LAAE effects were prominent in, but not restricted to, the tonotopic low-frequency (ventral) AVCN. HAAE treatment resulted in some loss of neurons in the high-frequency (dorsal) AVCN. In general, LAAE treatment plus male gonadal hormones (intact males) had an ameliorative effect whereas HAAE or LAAE treatment plus ovarian hormones (intact females) had a negative effect on age-related changes in the B6 auditory system.

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Section: Discussionmentioning

confidence: 99%

Effects of exposing C57BL/6J mice to high- and low-frequency augmented acoustic environments: Auditory brainstem response thresholds, cytocochleograms, anterior cochlear nucleus morphology and the role of gonadal hormones

et al. 2008

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“…Next, with regard to the incidence of hearing acuity, Kacker reported that there was no significant sex difference [47]. Meanwhile, Hinchcliffe and Jones reported that the hearing acuity in males was better than that in females [48]. Researchers also reported that the differences in hearing levels between females and males depended on the frequencies or race [49,50].…”

Section: Cochlear Nervementioning

confidence: 99%

The Relationship Between Sexually Dimorphic Peripheral Nerves and Diseases

Moriyama¹

2013

Sexual Dimorphism

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“…The data is mainly based on studies from the 1950s, 1960s, and 1970s (Corso, 1963;Glorig & Nixon, 1962;Hinchcliffe, 1959;Hinchcliffe & Jones, 1968;Jatho & Heck, 1959;Kell et al, 1970;Roche et al, 1976;Taylor et al, 1967). Over the years, noise at work places is being closely controlled, and a great benefi t of preventive medicine is obtained, nutrition is better today and awareness about noise has increased.…”

Section: Outdated Reportsmentioning

confidence: 98%

“…The audiometric equipment used was different in each of the studies. There were also variations in the earphones employed, the one most frequently used being the TDH-39 earphone (Hinchcliffe & Jones, 1968;Taylor et al, 1967). According to the frequency range explored, only Taylor et al (1967) provided data at 125 and 250 Hz.…”

Section: Please Scroll Down For Articlementioning

confidence: 99%