Aging & Longevity

Procedural Learning and Retention in Older Subjects: The Contribution of Sensorimotor and Premotor Cortex.

TL;DR

Procedural learning was preserved in healthy older adults and retention was even enhanced compared to younger adults, processes associated with activation changes in the contralateral sensorimotor and premotor cortices.

Key Findings

Both young and older adults showed significant procedural learning on a modified serial reaction time task.

  • Young group: n=18, mean age 24.9 ± 3.9 years, range 18-32 years
  • Older group: n=19, mean age 63.5 ± 5.1 years, range 54-73 years
  • Both groups showed significant procedural learning (p < 0.001)
  • A modified serial reaction time (SRT) task with feedback was used during fMRI on Day 1

Retention of procedural motor memories was significantly enhanced in older adults compared to younger adults.

  • Both groups showed significant retention (p < 0.05)
  • Retention was enhanced in older compared to younger adults (p < 0.01)
  • The enhanced retention in older adults remained significant even after normalizing reaction time (RT) gains to individual RT (p < 0.05)
  • Retention was assessed behaviorally outside the scanner on Day 2

Older participants showed more robust recruitment of the left sensorimotor cortex (SM1) during procedural learning compared to younger adults.

  • Functional MRI was used to assess neural activity during procedural learning on Day 1
  • Greater left SM1 activation was observed in the older group during the learning phase
  • This finding reflects contralateral sensorimotor cortex engagement during the task performed with the right hand

Left premotor cortex activity during procedural learning predicted retention in both age groups.

  • Left premotor cortex activation during Day 1 learning was predictive of Day 2 retention performance
  • This predictive relationship held across both young and older participants
  • The finding implicates the premotor cortex as a neural substrate relevant to motor memory consolidation regardless of age

Procedural learning and retention in healthy aging are associated with activation changes in the contralateral sensorimotor and premotor cortices.

  • The study used fMRI during a modified SRT task to characterize the neurobiological basis of procedural learning in aging
  • Contralateral (left hemisphere) regions were highlighted given right-hand task performance
  • Both SM1 and premotor cortex contributions were identified as relevant neural correlates in the aging brain

What This Means

This research suggests that healthy older adults (ages 54-73) are fully capable of learning new motor sequences — the kind of automatic, practiced movements involved in skills like typing or playing an instrument — and may actually be better at retaining what they learned the next day compared to younger adults (ages 18-32). Both groups improved their reaction times during a computerized sequence-learning task performed in an MRI scanner, and both remembered what they had learned when retested the following day. Surprisingly, the older group showed stronger memory for the learned sequence on Day 2, even when accounting for the fact that older adults tend to be slower overall. Brain imaging revealed that older adults relied more heavily on a region called the sensorimotor cortex (on the left side of the brain, which controls the right hand used in the task) while learning the sequences. Additionally, activity in a nearby region called the premotor cortex during learning predicted how well participants of any age would remember the sequence the next day, suggesting this brain area plays a key role in storing motor memories. These findings matter because they challenge the common assumption that aging necessarily leads to worse motor learning and memory. This research suggests that at least in healthy older individuals, the brain can adapt — possibly by recruiting motor-related regions more strongly — to support effective learning and even superior overnight retention of new movement patterns. This has potential implications for rehabilitation and skill training programs designed for older adults.

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Citation

Doppler C, Meyer L, Weidner R, Weiss P, Fink G. (2026). Procedural Learning and Retention in Older Subjects: The Contribution of Sensorimotor and Premotor Cortex.. Brain and behavior. https://doi.org/10.1002/brb3.71845