Processing of vowels in supratemporal auditory cortex

David Poeppel, Colin Phillips, Elron Yellin, Howard A. Rowley, Timothy P L Roberts, Alec Marantz

Research output: Contribution to journalArticle

Abstract

The auditory evoked neuromagnetic fields elicited by synthesized vowels of two different fundamental frequencies F0 were recorded in six subjects over the left and right temporal cortices using a 37-channel biomagnetometer. Single equivalent current dipole modeling of the fields elicited by all vowel types localized activity to a well-circumscribed area in supratemporal auditory cortex in both hemispheres. There were hemisphere asymmetries in the amplitude and latency of the M100 response. We also observed changes in M100 latency related to vowel type, but not to F0. There was no clear effect of vowel type or F0 on dipole localization for the M100, but a possible vowel type by latency interaction. These M100 data provide further evidence that vowels are processed independently of their pitch.

Original languageEnglish (US)
Pages (from-to)145-148
Number of pages4
JournalNeuroscience letters
Volume221
Issue number2-3
DOIs
StatePublished - Jan 17 1997

Keywords

  • M100
  • auditory
  • functional neuroimaging
  • language
  • magnetic source imaging
  • magnetoencephalography
  • speech
  • vowel

ASJC Scopus subject areas

  • Neuroscience(all)

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