Coherence analysis of scalp responses to amplitude-modulated tones

Debara L. Tucci, Michael J. Wilson, Robert A Dobie

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Magnitude squared coherence is a method of auditory evoked potential (AEP) frequency-domain analysis, measuring the degree to which the AEP is determined by the stimulus as a function of frequency. In 10 normal-hearing human subjects, scalp responses to an amplitude-modulated (AM) tone (500 Hz carrier modulated with a 40 Hz envelope) were recorded. Critical value criteria were utilized in the statistical analysis of coherence-intensity functions for determination of threshold responses. When compared with subjective determination of AEP threshold from time-domain waveforms, coherence analysis provided a significantly (p < 0.001) more sensitive threshold measure. Coherence analysis provides information on the spectral content of the response, and allows for the objective determination of threshold which may potentially be utilized in a more expeditious threshold measurement scheme.

Original languageEnglish (US)
Pages (from-to)195-201
Number of pages7
JournalActa Oto-Laryngologica
Volume109
Issue number3-4
DOIs
StatePublished - 1990
Externally publishedYes

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Auditory Evoked Potentials
Scalp
Hearing

Keywords

  • Amplitude modulation
  • Auditory evoked potential
  • Auditory threshold
  • Coherence
  • Frequency following response

ASJC Scopus subject areas

  • Otorhinolaryngology

Cite this

Coherence analysis of scalp responses to amplitude-modulated tones. / Tucci, Debara L.; Wilson, Michael J.; Dobie, Robert A.

In: Acta Oto-Laryngologica, Vol. 109, No. 3-4, 1990, p. 195-201.

Research output: Contribution to journalArticle

Tucci, Debara L. ; Wilson, Michael J. ; Dobie, Robert A. / Coherence analysis of scalp responses to amplitude-modulated tones. In: Acta Oto-Laryngologica. 1990 ; Vol. 109, No. 3-4. pp. 195-201.
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