The latency of transient evoked otoacoustic emissions has been evaluated in a sample of 58 ears from 34 preterm neonates, to understand if the estimates of cochlear tuning based on the otoacoustic emission latency show signs of developmental changes. A previous study on the same otoacoustic emissions analyzed here [Tognola et al. (2005). "Cochlear maturation and otoacoustic emissions in preterm infants: A time-frequency approach,"Hear. Res., 199, 71-80] reported indeed a significant change in the otoacoustic emission latency with postconception age. This last result, which would imply a significant decrease of tuning, was partially biased by the presence of spontaneous emissions. In this study, the same neonate data are reanalyzed using a novel time-frequency algorithm, less sensitive to spontaneous emissions. Asymmetry between right and left ears has been found, with the left ears showing no significant change, whereas in the right ears and in the 1.5-2.5 kHz frequency range only, a slow decrease of latency with postconception age (0.1-0.2 ms/week) was observed. The correspondent tuning estimates based on latency decrease by 0.4-0.5/week. Significant differences between neonate and adult latency were confirmed, which could be either cochlear or middle ear in nature. These findings are compared to previous studies on distortion product suppression tuning curves in preterm neonates. (C) 2008 Acoustical Society of America. [DOI: 10.1121/1.2977737]

Moleti, A., Sisto, R., Paglialonga, A., Sibella, F., Anteunis, L., Parazzini, M., et al. (2008). Transient evoked otoacoustic emission latency and estimates of cochlear tuning in preterm neonates. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 124(5), 2984-2994 [10.1121/1.2977737].

Transient evoked otoacoustic emission latency and estimates of cochlear tuning in preterm neonates

MOLETI, ARTURO;
2008-01-01

Abstract

The latency of transient evoked otoacoustic emissions has been evaluated in a sample of 58 ears from 34 preterm neonates, to understand if the estimates of cochlear tuning based on the otoacoustic emission latency show signs of developmental changes. A previous study on the same otoacoustic emissions analyzed here [Tognola et al. (2005). "Cochlear maturation and otoacoustic emissions in preterm infants: A time-frequency approach,"Hear. Res., 199, 71-80] reported indeed a significant change in the otoacoustic emission latency with postconception age. This last result, which would imply a significant decrease of tuning, was partially biased by the presence of spontaneous emissions. In this study, the same neonate data are reanalyzed using a novel time-frequency algorithm, less sensitive to spontaneous emissions. Asymmetry between right and left ears has been found, with the left ears showing no significant change, whereas in the right ears and in the 1.5-2.5 kHz frequency range only, a slow decrease of latency with postconception age (0.1-0.2 ms/week) was observed. The correspondent tuning estimates based on latency decrease by 0.4-0.5/week. Significant differences between neonate and adult latency were confirmed, which could be either cochlear or middle ear in nature. These findings are compared to previous studies on distortion product suppression tuning curves in preterm neonates. (C) 2008 Acoustical Society of America. [DOI: 10.1121/1.2977737]
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin)
English
Con Impact Factor ISI
Developmental changes; Distortion products; Frequency ranges; Middle ears; Otoacoustic emissions; Preterm infants; Preterm neonates; Right and lefts; Suppression tuning curves; Time frequencies; Time-frequency approaches; Alternative fuels; Packet networks; Spontaneous emission; Tuning; Acoustic emissions; algorithm; article; clinical article; cochlea aqueduct; evoked otoacoustic emission; female; human; male; maturation; measurement; middle ear; newborn; prematurity; priority journal; spontaneous otoacoustic emission; transient evoked otoacoustic emission latency; Acoustic Stimulation; Audiometry, Evoked Response; Cochlea; Evoked Potentials, Auditory; Hair Cells, Auditory, Outer; Humans; Infant, Newborn; Infant, Premature; Otoacoustic Emissions, Spontaneous; Reaction Time
Moleti, A., Sisto, R., Paglialonga, A., Sibella, F., Anteunis, L., Parazzini, M., et al. (2008). Transient evoked otoacoustic emission latency and estimates of cochlear tuning in preterm neonates. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 124(5), 2984-2994 [10.1121/1.2977737].
Moleti, A; Sisto, R; Paglialonga, A; Sibella, F; Anteunis, L; Parazzini, M; Tognola, G
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/27747
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