Notched-noise embedded frequency specific chirps for objective audiometry using auditory brainstem responses

  • Farah I. Corona-Strauss | corona@snn-unit.de Systems Neuroscience and Neurotechnology Unit, Saarland University Hospital, Homburg; Key Numerics Medical Engineering GbR, Saarbruecken, Germany.
  • Bernhard Schick Department of Otorhinolaryngology, Saarland University Hospital, Homburg, Germany.
  • Wolfgang Delb Systems Neuroscience and Neurotechnology Unit, Saarland University Hospital, Homburg; Department of Otorhinolaryngology, Mannheim University Hospital, Mannheim, Germany.
  • Daniel J. Strauss Systems Neuroscience and Neurotechnology Unit, Saarland University Hospital, Homburg; Leibniz Institute for New Materials, Saarbruecken; Key Numerics Medical Engineering GbR, Saarbruecken, Germany.

Abstract

It has been shown recently that chirp-evoked auditory brainstem responses (ABRs) show better performance than click stimulations, especially at low intensity levels. In this paper we present the development, test, and evaluation of a series of notched-noise embedded frequency specific chirps. ABRs were collected in healthy young control subjects using the developed stimuli. Results of the analysis of the corresponding ABRs using a time-scale phase synchronization stability (PSS) measure are also reported. The resultant wave V amplitude and latency measures showed a similar behavior as for values reported in literature. The PSS of frequency specific chirp-evoked ABRs reflected the presence of the wave V for all stimulation intensities. The scales that resulted in higher PSS are in line with previous findings, where ABRs evoked by broadband chirps were analyzed, and which stated that low frequency channels are better for the recognition and analysis of chirp-evoked ABRs. We conclude that the development and test of the series of notched-noise embedded frequency specific chirps allowed the assessment of frequency specific ABRs, showing an identifiable wave V for different intensity levels. Future work may include the development of a faster automatic recognition scheme for these frequency specific ABRs.

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Author Biographies

Farah I. Corona-Strauss, Systems Neuroscience and Neurotechnology Unit, Saarland University Hospital, Homburg; Key Numerics Medical Engineering GbR, Saarbruecken

Head of Engineering

SNN-Unit

Bernhard Schick, Department of Otorhinolaryngology, Saarland University Hospital, Homburg

Head of Clinic

 

Daniel J. Strauss, Systems Neuroscience and Neurotechnology Unit, Saarland University Hospital, Homburg; Leibniz Institute for New Materials, Saarbruecken; Key Numerics Medical Engineering GbR, Saarbruecken

Head

SNN-Unit

Published
2012-02-27
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Original Articles
Keywords:
auditory brainstem responses, chirps, frequency-specific ABRs, single sweeps, phase synchronization, wavelet transform.
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How to Cite
Corona-Strauss, F. I., Schick, B., Delb, W., & Strauss, D. J. (2012). Notched-noise embedded frequency specific chirps for objective audiometry using auditory brainstem responses. Audiology Research, 2(1), e7. https://doi.org/10.4081/audiores.2012.e7