A brief critical review of loudness recruitment.

Harris, J. Donald

doi:10.1037/h0061494

Cited by 18 publications

(9 citation statements)

References 72 publications

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“…However, the hearing aid may also distort the speech signal, [13] which may lead to more distraction for the hearing impaired. Recruitment, which refers to the finding that the same increase in signal strength gives a larger increase in perceived loudness in a non-normal ear than in the normal ear [14] may also play a part here by leading to the perception of sharp onsets of sound that capture attention away from focal task processing much like an auditory deviant. [15] Therefore, for the hearing impaired, as compared to the normal hearing individuals, there may be an additional demand of resisting attentional capture which may cause disruption of or less efficient, focal task processing.…”

Section: Hearing Impairment and Performance In Noisementioning

confidence: 97%

Performance, fatigue and stress in open-plan offices: The effects of noise and restoration on hearing impaired and normal hearing individuals

Jahncke

Halin

2012

Noise Health

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Hearing impaired and normal hearing individuals were compared in two within-participant office noise conditions (high noise: 60 L Aeq and low noise: 30 L Aeq ). Performance, subjective fatigue, and physiological stress were tested during working on a simulated open-plan office. We also tested two between-participants restoration conditions following the work period with high noise (nature movie or continued office noise). Participants with a hearing impairment (N = 20) were matched with normal hearing participants (N = 18) and undertook one practice session and two counterbalanced experimental sessions. In each experimental session they worked for two hours with basic memory and attention tasks. We also measured physiological stress indicators (cortisol and catecholamines) and self-reports of mood and fatigue. The hearing impaired participants were more affected by high noise than the normal hearing participants, as shown by impaired performance for tasks that involve recall of semantic information. The hearing impaired participants were also more fatigued by high noise exposure than participants with normal hearing, and they tended to have higher stress hormone levels during the high noise compared to the low noise condition. Restoration with a movie increased performance and motivation for the normal hearing participants, while rest with continued noise did not. For the hearing impaired participants, continued noise during rest increased motivation and performance, while the movie did not. In summary, the impact of noise and restorative conditions varied with the hearing characteristics of the participants. The small sample size does however encourage caution when interpreting the results.

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Section: Hearing Impairment and Performance In Noisementioning

confidence: 97%

Performance, fatigue and stress in open-plan offices: The effects of noise and restoration on hearing impaired and normal hearing individuals

Jahncke

Halin

2012

Noise Health

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“…Hearing abilities were also assessed using a loudness judgment task, during which participants categorized the perceived loudness of pure tones (Epstein and Marozeau, 2006;Al-Salim et al, 2010;Hebert et al, 2013). We also observed loudness recruitment: the loudness range over which older people perceive sounds was reduced compared to younger people (Figure 3; Steinberg and Gardner, 1937;Harris, 1953;Moore et al, 1996;Marozeau and Florentine, 2007).…”

Section: Subclinical Impairments In Hearing Accompany Agingmentioning

confidence: 78%

The effects of aging on neural signatures of temporal regularity processing in sounds

Herrmann

Buckland

Johnsrude

2019

Preprint

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Sensitivity to temporal regularity (e.g., amplitude modulation) is crucial for speech perception.Degradation of the auditory periphery due to aging and hearing loss may lead to an increased response gain in auditory cortex, with potential consequences for the processing of temporal regularities. We used electroencephalography recorded from younger (18-33 years) and older (55-80 years) adults to investigate how aging affects neural gain and the neural sensitivity to amplitude modulation in sounds.Aging was associated with reduced adaptation in auditory cortex, suggesting an age-related gain increase. Consistently, neural synchronization in auditory cortex to a 4-Hz amplitude modulation of a narrow-band noise was enhanced in ~30% of older individuals. Despite enhanced responsivity in auditory cortex, sustained neural activity (likely involving auditory and higher-order brain regions) in response to amplitude modulation was absent in older people. Hence, aging may lead to an overresponsivity to amplitude modulation in auditory cortex, but to a diminished regularity representation in higher-order areas.

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“…Do this by en¬ tering our Figure 2 with the slope of the pathological ear, or by way of the appro¬ priate curve in our Figure 1 as explained earlier. 4. If the pathological T0 is much short¬ ened, then the ratio is not really applicable.…”

Section: Commentmentioning

confidence: 99%