[The age-dependent dynamics of brain potentials related to movement in 9- to 12-year-old children]

Area of Science:

• Neuroscience
• Developmental Neuroscience
• Cognitive Neuroscience

Background:

• Movement-related brain potentials (MRBP) are crucial for understanding motor control and cognitive development.
• Previous research has indicated age-related changes in brain activity during motor tasks, but specific developmental trajectories in children require further elucidation.

Purpose of the Study:

• To investigate age-related differences in movement-related brain potentials (MRBP) between 9-10 year olds and 11-12 year olds.
• To identify specific MRBP parameters that change with development during a simple motor task.

Main Methods:

• Electroencephalography (EEG) was used to record MRBP from frontal and central scalp locations (F3, F4, C3, C4, Cz).
• Participants included two age groups: 47 children aged 9-10 years and 49 children aged 11-12 years.
• A simple button-push task was employed to elicit MRBP.

Main Results:

• The older group (11-12 years) exhibited a significantly higher amplitude of the readiness potential in the left frontal derivation compared to the younger group (9-10 years).
• The readiness potential showed definitive characteristics in both right frontal and central regions across both age groups.
• Two subcomponents of P2 postmovement positivity (P2a and P2b) were identified in both age groups, with the amplitude of P2b and the latency of the N3 component increasing with age.

Conclusions:

• Age-related differences in movement-related brain potentials are evident in children between 9-12 years.
• Developmental changes in the brain's motor system are reflected in specific MRBP parameters, including readiness potential, P2b, and N3 components.
• These findings contribute to understanding the maturation of motor control and cognitive processes during childhood.