Changes in auditory cortex and the development of mismatch negativity between 2 and 6 months of age Academic Article uri icon

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abstract

  • Evoked responses to stimulus deviance were compared in infants between 2 and 6 months of age. A deviant stimulus containing a short silent gap occasionally replaced a repeating standard stimulus matched in duration, intensity and approximate spectral content. At two months, the standard stimuli evoked only a positive slow wave, and its amplitude was increased in response to the deviant stimuli. By 6 months, the deviant stimuli evoked an increased negativity at approximately 200 ms, similar to the mismatch negativity (MMN) response in adults. The results are considered with respect to layer-specific cortical maturation during this period.

authors

  • Trainor, Laurel
  • McFadden, Melissa
  • Hodgson, Lisa
  • Darragh, Lisa
  • Barlow, Jennifer
  • Matsos, Laura
  • Sonnadara, Ranil

publication date

  • December 2003