I: The laboratory of Otoacoustic Emissions



The Laboratory of Otoacoustic Emissions was created in 1993 by a joint effort of Prof. Alessandro Martini and Stavros Hatzopoulos, Ph.D . The research projects have been revolved around the TEOAEs (using ILO-88, ILO-92 and ILO-292 equipment) and DPOAEs (ILO-92, StarKey 2000 and Virtual 330).
       From 2001 the staff of the Laboratory on Otoacoustic Emissions is managing the editorial duties of the Otoacoustic Emissions Portal.



Research collaborators of the OAE group :


  • Alessando Martini, M.D.
  • Stavros Hatzopoulos Ph.D.
  • Patrizia Trevisi M.D.
  • Monica Rosignoli
  • Nadia Giarbini M.D.
  • Silvano Prosser M.D.

Audiological technicians of the OAE group :


  • Maddalena Rossi
  • Luciana Camurri
  • Pietro Giordano

II: ON-line lectures



        The lectures are FREE and you can use them for your presentations or lectures, but we would appreciate if you could notify us when you intend to copy something.

  • Lecture 1: An introduction to Otoacoustic Emissions:

          This is a part of a Powepoint presentation used in our lectures on Otoacoustic Emissions and Evoked Auditory responses during the international Master's course of Audiology (Ferrara University, 1996 and 1998).
          The material is more geared versus animal OAE measurements but the majority of concepts hold true for human adult and neonatal OAE responses. To speed-up the downloading we have zipped the material into a self-unzipping file (introduction.exe). When you finish downloading run the executable file and then use any browser to open the index.html file.
           If for what-ever reason you cannot download the file please click here



III: On-going Research Projects



  • Projects on the Optimization of Neonatal Screening Protocols:

    This is a group collaboration mainly between the Service of Audiology of the University of Ferrara, the Warsaw University of Technology, the Kresge Hearing Research Laboratory of the South Louisiana State University Health Sciences Center of New Orleans and the Kyriakou Children's Hospital of Athens. The project aims at the definition of the important parameters that can optimize the current screening procedures. In addition the project will define wheather spectral methodologies can assist in the TEOAE, DPOAE- based evaluation of the neonate's hearing status.


  • OAE Experiments using Animal models like the Sprague Dawley Rat :

    The project aims at the definition of a robust clinical protocol that can permit the flawless registration of OAE responses . The results of the project will be used to test various cochlear models of ototoxicity and to define better the relationship between the distribution of OHCs and the OAEs.

  • Application of Signal Processing methods on the OAE analysis and Interpetation : The project targets the application of Quadratic Time-Frequency methods (i.e smooth variants of the Wigner_Ville transform) on the analysis of the OAE signals. This is a collaboration with the Karolinska Institutet, Dept. of Technical Audiology and the Polytechnic of Warsaw.

  • Tracers of Hereditary Hearing Loss.: This is one of the goals of the subgroup1 in the HEAR Concerted Action (currently GENDEAF). Members of the group are collecting evidence, in terms of TEOAE and DPOAE parameters, which can be used to identify better a hereditary hearing loss syndrome. The most ambitious project deals with the correlation between DPOAE and Audioscan notches. Software developments for the analysis of the Audioscan data can be found in the old HEAR page.


IV: Additional Information



  • For the past 5 years we have supported a local FORUM space where we had included MEDLINE OAE article lists, Links of other OAE sites, announcements of important experimental results and downloading of relevant software and TEOAE data.

  • A more enhanced version of the FORUM arguments is presented in the space of the Otoacoustic Emissions Portal.



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