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Related Experiment Video

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The "Motor" in Implicit Motor Sequence Learning: A Foot-stepping Serial Reaction Time Task
10:39

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Published on: May 3, 2018

Age differences in symbolic representations of motor sequence learning.

J Bo1, S J Peltier, D C Noll

  • 1School of Kinesiology, University of Michigan, Ann Arbor, MI 48109-1109, USA.

Neuroscience Letters
|September 20, 2011
PubMed
Summary

Older adults show deficits in symbolic motor sequence learning compared to young adults. This is linked to reduced cerebellar lobule HVI activation, suggesting under-recruitment of key brain areas for implicit learning.

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Last Updated: May 29, 2026

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Gerontology

Background:

  • Young adults (YA) preferentially recruit cerebellar lobule HVI for symbolic motor sequence learning.
  • Learning magnitude in YA correlates with activation in lobule HVI.

Purpose of the Study:

  • To evaluate age differences in the symbolic representation of motor sequence learning.
  • To investigate cerebellar lobule HVI activation during symbolic motor sequence learning in young adults (YA) versus older adults (OA).

Main Methods:

  • Fourteen YA and 14 OA performed the alternating serial reaction time task (ASRT) under spatial versus symbolic and manual versus vocal conditions.
  • Cerebellar lobule HVI was used as a region-of-interest for functional magnetic resonance imaging (fMRI) analysis.

Main Results:

  • Older adults (OA) exhibited reduced learning magnitudes compared to YA.
  • OA showed significantly lower activation in cerebellar lobule HVI than YA during symbolic learning conditions (FWE, P<0.05).
  • A significant correlation between learning magnitude and cerebellar activation was observed in OA, similar to YA.

Conclusions:

  • Older adults (OA) under-recruit relevant brain areas, specifically cerebellar lobule HVI, during symbolic motor sequence learning.
  • This neural under-recruitment may partially explain the observed deficits in implicit sequence learning in older adults.
  • Despite age-related differences in activation, similar neural networks are recruited for implicit learning by both YA and OA.