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Serena Ricci1,2, Ramtin Mehraram1,3, Elisa Tatti1

  • 1CUNY Medical School, New York, NY 10031, USA.

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Summary
This summary is machine-generated.

Motor skill learning involves changes in beta power modulation, with practice increasing this modulation depth. This age-independent effect suggests sensorimotor cortex plasticity during motor tasks.

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Area of Science:

  • Neuroscience
  • Motor Control
  • Cognitive Aging

Background:

  • Movement execution involves beta power modulation in sensorimotor areas, characterized by event-related desynchronization (ERD) and event-related synchronization (ERS).
  • Previous research indicates that the depth of ERD-to-ERS modulation increases with motor skill practice and is linked to skill retention, suggesting sensorimotor cortex plasticity.

Purpose of the Study:

  • To investigate whether the practice-related increase in beta modulation depth during reaching movements is consistent across younger and older adults.
  • To examine the relationship between age, motor performance, and beta modulation dynamics.

Main Methods:

  • Participants (younger and older adults) performed a 30-minute reaching movement task.
  • Electroencephalography (EEG) was used to analyze beta power modulation in the sensorimotor and frontal regions of interest (ROIs).
  • Performance indices (speed, accuracy) and event-related synchronization (ERS) peak latency were analyzed.

Main Results:

  • Older adults exhibited slower and less accurate movements compared to younger adults.
  • Both younger and older groups showed a similar increase in practice-related beta modulation depth in the analyzed ROIs.
  • A progressive delay in ERS peak latency was observed, correlating with total movement time.

Conclusions:

  • The practice-related increase in beta modulation depth during reaching movements is age-independent.
  • Motor skill learning-related plasticity, as reflected by beta modulation depth, is preserved in older adults.
  • ERS peak latency, but not magnitude, is associated with motor performance, independent of age.