Abstract
The perception of complex auditory information such as complete speech sequences develops during human ontogeny. In order to explore age differences in the auditory perception of predictable speech sequences we compared event-related potentials (ERPs) recorded in 5- to 6-year-old children (N = 15) and adults (N = 15) in response to anticipated speech sequences as successive and reverse digital series with randomly omitted digits. The ERPs obtained from the omitted digits significantly differed in the amplitude and latency of the N200 and P300 components between adults and children, the N400 and LPC components were more pronounced in children in the right frontal area for the digits presentation. These findings indicate that the perception of a successive speech structure is less automated in children and requires a detailed analysis of the successive structure and error detection. These differences in auditory ERPs reflect developmental changes in the auditory perception of speech sequences and can serve as indicators of the maturity of cognitive functions in children.
Highlights
The present study aims to investigate the perception of successive auditory stimuli such as anticipated speechHow to cite this paper: Galina, P. and Olga, M. (2014) Auditory event-related potentials (ERPs) Differences in the Perception of Anticipated Speech Sequences in 5 - 6 Years Old Children and Adults
The following ERP components were found during the presentation of all digits in the series: N100 with an amplitude of up to 0.5 μV at latencies of 80 - 100 Hz in the frontal, central, temporal and parietal regions; P200 with an amplitude of up to 2.5 μV at latencies of 180 - 230 Hz in the frontal, central, temporal and parietal regions; N400 at latencies of 380 - 450 ms in the frontal, parietal and central areas; and late positive component (LPC) with an amplitude of up to 0.7 μV at latencies of 750 - 900 ms in the central, temporal and parietal regions
There were no significant difference in amplitudes and latencies of the described ERP components for different digits, there were no significant differences between ERPs for the different omitted digits
Summary
The present study aims to investigate the perception of successive auditory stimuli such as anticipated speechHow to cite this paper: Galina, P. and Olga, M. (2014) Auditory ERP Differences in the Perception of Anticipated Speech Sequences in 5 - 6 Years Old Children and Adults. The present study aims to investigate the perception of successive auditory stimuli such as anticipated speech. How to cite this paper: Galina, P. and Olga, M. (2014) Auditory ERP Differences in the Perception of Anticipated Speech Sequences in 5 - 6 Years Old Children and Adults. Olga sequences and its dynamics during human ontogenesis. The processing of auditory information is a complex system consisting of different elements that are required to continuously extract crucial information from the total informational flow. The most important features of this system are perception of the sound sequence, extraction of speech phonemes and the emotional components of speech, perception of everyday noises and music. Children are not born with all of the necessary mechanisms for the perception of auditory information [1], they have to learn to hear as they grow and develop
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