Catálogo de publicaciones - libros
Título de Acceso Abierto
Physiology, Psychoacoustics and Cognition in Normal and Impaired Hearing
Pim van Dijk ; Deniz Başkent ; Etienne Gaudrain ; Emile de Kleine ; Anita Wagner ; Cris Lanting (eds.)
Resumen/Descripción – provisto por la editorial
No disponible.
Palabras clave – provistas por la editorial
Neurosciences; Otorhinolaryngology
Disponibilidad
| Institución detectada | Año de publicación | Navegá | Descargá | Solicitá |
|---|---|---|---|---|
| No requiere | 2016 | SpringerLink |
|
Información
Tipo de recurso:
libros
ISBN impreso
978-3-319-25472-2
ISBN electrónico
978-3-319-25474-6
Editor responsable
Springer Nature
País de edición
Reino Unido
Fecha de publicación
2016
Información sobre derechos de publicación
© The Editor(s) (if applicable) and the Author(s) 2016
Cobertura temática
Tabla de contenidos
Frequency Tuning of the Efferent Effect on Cochlear Gain in Humans
Vit Drga; Christopher J. Plack; Ifat Yasin
Cochlear gain reduction via efferent feedback from the medial olivocochlear bundle is frequency specific (Guinan, Curr Opin Otolaryngol Head Neck Surg 18:447–453, 2010). The present study with humans used the Fixed Duration Masking Curve psychoacoustical method (Yasin et al., J Acoust Soc Am 133:4145–4155, 2013a; Yasin et al., Basic aspects of hearing: physiology and perception, pp 39–46, 2013b; Yasin et al., J Neurosci 34:15319–15326, 2014) to estimate the frequency specificity of the efferent effect at the cochlear level. The combined duration of the masker-plus-signal stimulus was 25 ms, within the efferent onset delay of about 31–43 ms (James et al., Clin Otolaryngol 27:106–112, 2002). Masker level (4.0 or 1.8 kHz) at threshold was obtained for a 4-kHz signal in the absence or presence of an ipsilateral 60 dB SPL, 160-ms precursor (200-Hz bandwidth) centred at frequencies between 2.5 and 5.5 kHz. Efferent-mediated cochlear gain reduction was greatest for precursors with frequencies the same as, or close to that of, the signal (gain was reduced by about 20 dB), and least for precursors with frequencies well removed from that of the signal (gain remained at around 40 dB). The tuning of the efferent effect filter (tuning extending 0.5–0.7 octaves above and below the signal frequency) is within the range obtained in humans using otoacoustic emissions (Lilaonitkul and Guinan, J Assoc Res Otolaryngol 10:459–470, 2009; Zhao and Dhar, J Neurophysiol 108:25–30, 2012). The 10 dB bandwidth of the efferent-effect filter at 4000 Hz was about 1300 Hz (Q of 3.1). The FDMC method can be used to provide an unbiased measure of the bandwidth of the efferent effect filter using ipsilateral efferent stimulation.
Pp. 477-484