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Kastelein, R.A. (author), Helder-Hoek, L. (author), Cornelisse, S.A. (author), von Benda-Beckmann, A.M. (author), Lam, F.P.A. (author), de Jong, C.A.F. (author), Ketten, D.R. (author)
Noise-induced temporary hearing threshold shift (TTS) was studied in a harbor porpoise exposed to impulsive sounds of scaled-down airguns while both stationary and free-swimming for up to 90 min. In a previous study, ∼4 dB TTS was elicited in this porpoise, but despite 8 dB higher single-shot and cumulative exposure levels (up to 199 dB re 1...
article 2020
document
Kastelein, R.A. (author), van Schie, R. (author), Verboom, W.C. (author), de Haan, D. (author), TNO Defensie en Veiligheid (author)
The unmasked underwater hearing sensitivities of an 8-year-old male and a 7-year-old female Steller sea lion were measured in a pool, by using behavioral psychophysics. The animals were trained with positive reinforcement to respond when they detected an acoustic signal and not to respond when they did not. The signals were narrow-band,...
article 2005
document
van Leerdam, F.J.M. (author)
The Youth Health Care guideline 'Early screening for hearing impairment, ages 0-19 years' draws the attention of all parties involved to the case finding of, notably, perceptive hearing loss; it helps workers in the Youth Health Care argue their referrals and improve the next steps in the process. Referrals always aim at ruling out perceptive...
article 2000