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Rapid Motor Inhibition as a Mechanism to Prevent Outdated Movements.

Clara Kuper1,2, Martin Rolfs1,3

  • 1Department of Psychology, Humboldt-Universität zu Berlin, Berlin 10099, Germany clara.kuper@posteo.de martin.rolfs@hu-berlin.de.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|February 17, 2026
PubMed
Summary
This summary is machine-generated.

Sudden environmental changes trigger rapid, non-selective inhibition of planned hand movements. This reflexive safeguard prevents outdated actions, allowing the motor system time to update movement plans.

Keywords:
manual tappingmotor controlmotor inhibitiononline researchpsychophysicssaccadic inhibition

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Area of Science:

  • Neuroscience
  • Motor Control
  • Cognitive Psychology

Background:

  • Planned movements can become obsolete due to sudden environmental changes.
  • The oculomotor system exhibits inhibition following salient changes to prevent outdated actions.
  • The existence and characteristics of such a mechanism in hand movements are unclear.

Purpose of the Study:

  • To investigate the presence and features of a transient inhibitory mechanism in human hand movements.
  • To determine if this inhibition is reflexive, precedes movement updating, and is sensitive to change saliency.
  • To compare this mechanism to known inhibitory processes in the oculomotor system.

Main Methods:

  • Conducted three online and two lab-based behavioral experiments.
  • Participants performed rapid sequential tapping movements.
  • Introduced relevant (target displacement) or irrelevant (luminance flash) changes during movement planning.
  • Measured movement initiation rates and compared them to a no-change baseline.

Main Results:

  • A significant transient inhibition of movement initiation occurred after both relevant and irrelevant changes.
  • This inhibition preceded observable updates to the movement plan.
  • The inhibitory effect was stronger for more salient changes.
  • Replication confirmed the inhibitory response latency aligns with visuomotor reaction times.

Conclusions:

  • The human motor system possesses a general-purpose, rapid inhibitory mechanism for hand movements, analogous to the oculomotor system.
  • This reflexive inhibition acts as a safeguard against executing obsolete actions in dynamic environments.
  • The findings advance understanding of sensorimotor control and error prevention in action planning.