Hemispheric lateralization in preattentive processing of speech sounds Academic Article uri icon

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abstract

  • Event-related magnetoencephalographic (MEG) responses to infrequently presented spoken deviant syllables [di] and [ba] among repetitive standard [da)]syllables were recorded in subjects who either attended to these stimuli in order to discriminate the [ba] syllables or ignored them while attending a silent movie. In both conditions, the deviant syllables elicited a mismatch response (MMNm, the magnetic counterpart of mismatch negativity), which was stronger in the left than in the right auditory cortex, indicating left-hemispheric dominance in speech processing already at a preattentive processing level.

authors

  • Alho, Kimmo
  • Connolly, John
  • Cheour, Marie
  • Lehtokoski, Anne
  • Huotilainen, Minna
  • Virtanen, Juha
  • Aulanko, Reijo
  • Ilmoniemi, Risto J

publication date

  • December 1998