Journal
INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY
Volume 51, Issue 1, Pages 5-15Publisher
ELSEVIER
DOI: 10.1016/S0167-8760(03)00148-X
Keywords
infant; human; development; auditory; temporal; gap detection; mismatch negativity (MMN)
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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. (C) 2003 Elsevier B.V. All rights reserved.
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