Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloBispectral approach to analyze nonlinear cochlear active mechanisms in transient evoked otoacoustic emissions
Anno di pubblicazione2013
Autore/iMarchesi, S.;Tognola, G.;Paglialonga, A.
Affiliazioni autoriNational Research Council (CNR), Institute of Biomedical Engineering, I-20133 Milan, Italy
Autori CNR e affiliazioni
AbstractA new approach to study nonlinearity in cochlear active mechanisms, as evaluated in transient evoked otoacoustic emissions (TEOAEs), is presented. TEOAEs are signals generated in the cochlea by a mix of linear and nonlinear mechanisms. This new approach was designed to complement the traditional TEOAE analysis performed by currently available systems used in objective hearing screening and assessment. Nonlinearity of TEOAEs was studied by means of the bispectrum, which is able to find out quadratic frequency couplings (QFCs) that occur when a frequency is not only generated by an independent cochlear source, but it is the result of the interaction among a number of cochlear sources. To fit with the technical constraints of currently available TEOAE systems, the bispectrum was estimated by the third-order scaled polyperiodogram. The proposed method was characterized with synthesized TEOAEs as a function of the main TEOAE parameters and then used to analyze TEOAEs recorded in normal hearing adults and full-term neonates. Results revealed the presence of QFCs in both adult and neonatal TEOAEs, with peculiar patterns and significantly different frequency content in the two groups: adults had QFCs mainly around 2 kHz and neonates had QFCs mainly in the range 3.5-4 kHz.
Lingua abstractinglese
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Pagine da401-12
Pagine a412
Pagine totali-
RivistaIEEE transactions on biomedical circuits and systems
Attiva dal 2007
Editore: IEEE, - New York, NY
Paese di pubblicazione: Stati Uniti d'America
Lingua: inglese
ISSN: 1932-4545
Titolo chiave: IEEE transactions on biomedical circuits and systems
Titolo proprio: IEEE transactions on biomedical circuits and systems.
Titolo abbreviato: IEEE trans. biomed. circuits syst.
Titolo alternativo: Biomedical circuits and systems
Numero volume della rivista7
Fascicolo della rivista4
Verificato da refereeSì: Internazionale
Stato della pubblicazione-
Indicizzazione (in banche dati controllate)
  • ISI Web of Science (WOS) (Codice:000322336800002)
  • Scopus (Codice:2-s2.0-84881058043)
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Strutture CNR
  • IEIIT — Istituto di elettronica e di ingegneria dell'informazione e delle telecomunicazioni
  • ISIB — ISIB - Milano
Moduli CNR
  • ME.P06.021.001 : Neuroingegneria e disordini della comunicazione
Progetti Europei-
Bispectral approach to analyze non-linear cochlear active mechanisms (documento privato )
Tipo documento: application/pdf