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Related Experiment Video

Updated: Dec 3, 2025

Measuring and Manipulating Functionally Specific Neural Pathways in the Human Motor System with Transcranial Magnetic Stimulation
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Stress Modulates the Balance between Hippocampal and Motor Networks during Motor Memory Processing.

N Dolfen1,2, B R King1,2, L Schwabe3

  • 1Department of Movement Sciences, Movement Control and Neuroplasticity Research Group, KU Leuven, Leuven, Belgium.

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|October 27, 2020
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Summary
This summary is machine-generated.

Stress before motor learning shifts brain activity, enhancing initial performance but impairing long-term memory consolidation. Individual brain responses to stress dictate its impact on motor learning.

Keywords:
hippocampusmemory consolidationmotor sequence learningstress

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Behavioral Science

Background:

  • Motor sequence learning relies on hippocampo-striato-cortical interactions for memory consolidation.
  • Stress is known to alter brain system balance in other memory domains.
  • The impact of acute stress on motor memory processing remains unclear.

Purpose of the Study:

  • To investigate if stress exposure before motor learning modulates neural processes and memory consolidation.
  • To examine the effects of stress on brain network activity during motor sequence learning and subsequent memory recall.

Main Methods:

  • Seventy-two healthy young adults underwent either a stressful or non-stressful intervention before a motor sequence learning task.
  • Functional magnetic resonance imaging (fMRI) was used during training and for a retest after sleep to assess consolidation.
  • Behavioral performance and neural activity patterns were analyzed.

Main Results:

  • Stress did not affect immediate behavioral performance in motor learning.
  • Stress led to increased sensorimotor region recruitment and decreased hippocampo-cortical network engagement during learning.
  • The neural shift towards motor networks benefited initial performance but hindered memory consolidation.

Conclusions:

  • Stress prior to learning significantly modulates the neural networks involved in motor memory processing.
  • The observed neural shift under stress has differential effects on initial learning versus long-term consolidation.
  • Individual differences in brain stress responses influence the outcome of stress on motor learning and memory consolidation.