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Quantitative Assessment of Cortical Auditory-tactile Processing in Children with Disabilities
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Children show hemispheric differences in the basic auditory response properties.

Tiina Parviainen1,2, Päivi Helenius3, Riitta Salmelin2,4

  • 1Centre for Interdisciplinary Brain Research, Department of Psychology, University of Jyväskylä, Jyväskylä, Finland.

Human Brain Mapping
|February 20, 2019
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Summary
This summary is machine-generated.

Children aged 7-8 show adult-like auditory spatial processing, but with prolonged brain responses. The right auditory cortex matures faster than the left, indicating developmental differences in auditory processing.

Keywords:
N100mN250mcortical maturationdevelopmentelectromagnetic brain imaging

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Area of Science:

  • Neuroscience
  • Auditory Neuroscience
  • Developmental Neuroscience

Background:

  • The auditory cortex exhibits contralateral dominance and lateralization, influencing auditory processing.
  • Children differ from adults in hemispheric activation balance during higher-order auditory tasks.

Purpose of the Study:

  • To determine if 7- to 8-year-old children exhibit contralateral dominance in auditory processing.
  • To investigate hemispheric differences in auditory cortex response properties in children.

Main Methods:

  • Magnetoencephalography (MEG) was used to record brain responses to simple auditory tones.
  • Analysis focused on contralateral preference and temporal characteristics of neural responses.

Main Results:

  • Children demonstrated adult-like contralateral preference, but with temporally extended responses.
  • The right auditory cortex showed more mature response properties compared to the left hemisphere.
  • Response duration decreased with age in the studied pediatric population.

Conclusions:

  • Spatial auditory sensitivity emerges by age 7, but immature neurophysiological features persist, especially in the left hemisphere.
  • Functional hemispheric differences in the auditory cortex may impact higher-level cognitive functions like language.