Auditory brainstem, middle and late latency responses to short gaps in noise at different presentation rates

Khalid Alhussaini, Jorge Bohorquez, Rafael E. Delgado, Ozcan Ozdamar

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Objective: The effects of rate on auditory-evoked potentials (AEP) to short noise gaps (12 ms) recorded at high sampling rates using wide-band filters were investigated. Design: Auditory brainstem (ABR), middle latency (MLR), late latency (LLR) and steady-state (ASSR) responses were simultaneously recorded in adult subjects at four gap rates (0.5, 1, 5 and 40 Hz). Major components (V, Na, Pa, Nb, Pb, N1 and P2) were identified at each rate and analysed for latency/amplitude characteristics. Gap responses at 40 Hz were recovered from Quasi-ASSRs (QASSR) using the CLAD deconvolution method. Study Sample: Fourteen right ears of young normal hearing subjects were tested. Results: All major components were present in all subjects at 1 Hz. P1 (P50) appeared as a low-pass filtered component of Pa and Pb waves. At higher rates, N1 and P2 disappeared completely while major ABR-MLR components were identified. Peak latencies were mostly determined by noise onsets slightly delayed by offset responses. Conclusions: Major AEP components can be recorded to short gaps at 1 Hz using high sampling rates and wide-band filters. At higher rates, only ABR and MLRs can be recorded. Such simultaneous recordings may provide a complete assessment of temporal resolution and processing at different levels of auditory pathways.

Original languageEnglish (US)
Pages (from-to)399-406
Number of pages8
JournalInternational Journal of Audiology
Volume57
Issue number6
DOIs
StatePublished - Jun 3 2018

Keywords

  • Gaps in noise
  • auditory brainstem response
  • auditory late latency response
  • auditory middle latency response
  • auditory steady-state response
  • auditory-evoked potential
  • continuous loop averaging deconvolution

ASJC Scopus subject areas

  • Language and Linguistics
  • Linguistics and Language
  • Speech and Hearing

Fingerprint

Dive into the research topics of 'Auditory brainstem, middle and late latency responses to short gaps in noise at different presentation rates'. Together they form a unique fingerprint.

Cite this