Chirp and click evoked auditory steady state responses

Yüce Hekimoglu, Ozcan Ozdamar, Rafael E. Delgado

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this study, Auditory Steady State Responses (ASSR) to 100 μsec clicks and 4 msec cochlear chirps are recorded in adult subjects at repetition rates of 20 to 100 Hz in 10 Hz increments. Response characteristics of ASSRs are compared in the frequency domain. Results show that response amplitudes to both stimuli peak in the proximity of 40 Hz and 80 Hz, but chirps generate responses with larger amplitudes at all repetition rates. The responses at 40 Hz repetition rates for both clicks and chirps are larger than the corresponding responses at 80 Hz stimuli in awake adults. The 40 Hz responses, however, show greater variability than the 80 Hz responses depending on the subject's state of consciousness. The predictions of the ASSR waveforms at each repetition rate were then synthesized by superimposing the suitably shifted Middle Latency Response (MLR) waveforms that were recorded during the same session with a stimulus repetition rate of 10 Hz for both click and chirp recordings. This part of the study was undertaken to investigate the validity of the hypothesis which states that the steady state responses are simply the linear additions of transient MLRs. The results showed that the synthesized waveforms resembled the real recordings to some extent, but consistently had larger amplitudes. This difference is assumed to be a result of the adaptation effects of higher stimulus rates.

Original languageEnglish (US)
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Pages2084-2087
Number of pages4
Volume2
StatePublished - 2001
Event23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Istanbul, Turkey
Duration: Oct 25 2001Oct 28 2001

Other

Other23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CountryTurkey
CityIstanbul
Period10/25/0110/28/01

Keywords

  • Adaptation
  • Auditory evoked potentials
  • Chirp stimuli
  • Steady-state Responses

ASJC Scopus subject areas

  • Mechanical Engineering
  • Energy Engineering and Power Technology

Cite this

Hekimoglu, Y., Ozdamar, O., & Delgado, R. E. (2001). Chirp and click evoked auditory steady state responses. In Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (Vol. 2, pp. 2084-2087)

Chirp and click evoked auditory steady state responses. / Hekimoglu, Yüce; Ozdamar, Ozcan; Delgado, Rafael E.

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 2 2001. p. 2084-2087.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hekimoglu, Y, Ozdamar, O & Delgado, RE 2001, Chirp and click evoked auditory steady state responses. in Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. vol. 2, pp. 2084-2087, 23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Istanbul, Turkey, 10/25/01.
Hekimoglu Y, Ozdamar O, Delgado RE. Chirp and click evoked auditory steady state responses. In Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 2. 2001. p. 2084-2087
Hekimoglu, Yüce ; Ozdamar, Ozcan ; Delgado, Rafael E. / Chirp and click evoked auditory steady state responses. Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 2 2001. pp. 2084-2087
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