Auditory evoked M100 reflects onset acoustics of speech sounds

Nicole Gage, David Poeppel, Timothy P.L. Roberts, Gregory Hickok

Research output: Contribution to journalArticle

Abstract

Magnetoencephalography (MEG) was used to investigate the response to speech sounds that differ in onset dynamics, parameterized as words that have initial stop consonants (e.g., /b/, /t/) or do not (e.g., /m/, /f/). Latency and amplitude of the M100 auditory evoked neuromagnetic field, recorded over right and left auditory cortices, varied as a function of onset: stops had shorter latencies and higher amplitudes than no-stops in both hemispheres, consistent with the hypothesis that M100 is a sensitive indicator of spectral properties of acoustic stimuli. Further, activation patterns in response to stops/no-stops differed in the two hemispheres, possibly reflecting differential perceptual processing for the acoustic-phonetic cues at the onset of spoken words.

Original languageEnglish (US)
Pages (from-to)236-239
Number of pages4
JournalBrain Research
Volume814
Issue number1-2
DOIs
StatePublished - Dec 14 1998

Keywords

  • Auditory
  • Cognitive neuroscience
  • Language
  • Lateralization
  • Magnetoencephalography
  • Speech
  • Temporal processing

ASJC Scopus subject areas

  • Neuroscience(all)
  • Molecular Biology
  • Clinical Neurology
  • Developmental Biology

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