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Updated: Jul 6, 2026
Infant Auditory Processing and Event-related Brain Oscillations
Published on: July 1, 2015
Event-related potentials to pitch and rise time change in children with reading disabilities and typically reading
J A Hämäläinen1, P H T Leppänen, T K Guttorm
1Department of Psychology, University of Jyväskylä, PO Box 35, Agora, 40014 Jyväskylä, Finland. jarmo.hamalainen@psyka.jyu.fi
Insights
Children with reading disabilities (RD) show distinct auditory processing differences compared to control children, particularly in how they perceive pitch and rise time changes. These findings highlight specific auditory deficits in dyslexia.
Area of Science:
- Neuroscience
- Developmental Psychology
- Auditory Neuroscience
Background:
- Children with reading disabilities (RD) often exhibit difficulties in auditory processing.
- Understanding these deficits is crucial for developing targeted interventions.
Purpose of the Study:
- To investigate differences in processing auditory features like rise time and pitch between children with RD and control children.
- To examine how the interval between tones affects these processing differences.
Main Methods:
- Utilized passive oddball event-related potential (ERP) measurements with paired stimuli.
- Analyzed mismatch negativity (MMN), P3a, and late discriminative negativity (LDN) responses to pitch and rise time changes.
Main Results:
- Children with RD had smaller P3a responses to pitch changes when tones were close, unlike controls.
- MMN was smaller and LDN larger in controls for rise time changes with distant tones.
- ERP measures showed 40-50% non-overlap between groups.
Conclusions:
- Pitch processing issues in RD link to attention switching deficits.
- Amplitude envelope processing problems in RD relate to stimulus detection/discrimination.
- These findings support the presence of amplitude envelope and rapid auditory processing deficits in dyslexia.
Objective:
The purpose of the present study was to investigate whether children with reading disabilities (RD) process rise time and pitch changes differently to control children as a function of the interval between two tones.
Methods:
Children participated in passive oddball event-related potential (ERP) measurements using paired stimuli. Mismatch negativity (MMN), P3a and late discriminative negativity (LDN) responses to rise time and pitch changes were examined.
Results:
Control children produced larger responses than children with RD to pitch change in the P3a component but only when the sounds in the pair were close to each other. Compared to children with RD, MMN was smaller and LDN larger in control children in response to rise time change when the sounds in the pair were further apart. The non-overlap in ERP measures between the groups was 40-50%.
Conclusions:
Problems in rapid processing of pitch change were reflected in a component associated with attention switching while amplitude envelope processing problems were reflected in components associated with stimulus detection or discrimination.
Significance:
Children with RD process both rise time and pitch changes differently from control children thus providing evidence for the nature of amplitude envelope processing and rapid auditory processing deficits in dyslexia.
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