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Updated: Sep 4, 2025
Infant Auditory Processing and Event-related Brain Oscillations
Published on: July 1, 2015
The age-related changes in 40 Hz Auditory Steady-State Response and sustained Event-Related Fields to the same
Vardan Arutiunian1, Giorgio Arcara2, Irina Buyanova1
1Center for Language and Brain, HSE University, Moscow, Russia.
Insights
Childhood brain development shows changes in auditory steady-state responses (ASSR) and evoked potentials (ERF). This study links increasing gamma-band ASSR strength with decreasing ERF amplitude in children, suggesting maturation of neural inhibition.
Area of Science:
- Neuroscience
- Developmental Neuroscience
- Auditory Neuroscience
Background:
- Gamma-band oscillations and evoked potentials change during childhood.
- These changes are hypothesized to relate to GABAergic neurotransmission maturation and neural excitation-inhibition balance.
- The 40 Hz Auditory Steady-State Response (ASSR) and sustained Event-Related Field (ERF) are key measures in the auditory cortex.
Purpose of the Study:
- To investigate the association between 40 Hz ASSR and sustained ERF in children.
- To examine age-related changes in both 40 Hz ASSR and ERF.
- To explore the relationship between these age-related changes and neural maturation.
Main Methods:
- Magnetoencephalography (MEG) was used to record brain activity.
- Participants (30 typically developing children, ages 7-12) were presented with periodic auditory stimuli.
- Analysis focused on the 40 Hz ASSR and sustained ERF responses.
Main Results:
- A significant relationship was found between 40 Hz ASSR and ERF.
- An age-related increase in 40 Hz ASSR strength was observed.
- This increase was associated with an age-related decrease in ERF amplitude.
Conclusions:
- The findings suggest a link between the maturation of the GABAergic system and the observed changes in ASSR and ERF.
- Developmental changes in excitation-inhibition balance may underlie age-related alterations in auditory evoked responses.
- This study provides insights into neural maturation during childhood using auditory steady-state and evoked field responses.
Abstract:
Recent studies have revealed that gamma-band oscillatory and transient evoked potentials may change with age during childhood. It is hypothesized that these changes can be associated with a maturation of GABAergic neurotransmission and, subsequently, the age-related changes of excitation-inhibition balance in the neural circuits. One of the reliable paradigms for investigating these effects in the auditory cortex is 40 Hz Auditory Steady-State Response (ASSR), where participants are presented with the periodic auditory stimuli. It is known that such stimuli evoke two types of responses in magnetoencephalography (MEG)-40 Hz steady-state gamma response (or 40 Hz ASSR) and auditory evoked response called sustained Event-Related Field (ERF). Although several studies have been conducted in children, focusing on the changes of 40 Hz ASSR with age, almost nothing is known about the age-related changes of the sustained ERF to the same periodic stimuli and their relationships with changes in the gamma strength. Using MEG, we investigated the association between 40 Hz steady-state gamma response and sustained ERF response to the same stimuli and also their age-related changes in the group of 30 typically developing 7-to-12-year-old children. The results revealed a tight relationship between 40 Hz ASSR and ERF, indicating that the age-related increase in strength of 40 Hz ASSR was associated with the age-related decrease of the amplitude of ERF. These effects were discussed in the light of the maturation of the GABAergic system and excitation-inhibition balance development, which may contribute to the changes in ASSR and ERF.
