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Related Experiment Video

Updated: Feb 3, 2026

Author Spotlight: Using Motor Imagery Brain-Computer Interface to Improve Motor and Cognitive Function in Stroke Patients
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Action observation for upper limb rehabilitation after stroke.

Lorenna Rdm Borges1, Aline Bgs Fernandes, Luciana Protásio Melo

  • 1Department of Physical Therapy, Federal University of Rio Grande do Norte, Av. Senador Salgado Filho, 3000., Natal, Rio Grande do Norte, Brazil, 59078-970.

The Cochrane Database of Systematic Reviews
|November 1, 2018
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Summary

Action observation (AO) improves upper limb motor function and daily living activities in stroke survivors. However, the evidence quality is low, limiting confidence in these findings for stroke rehabilitation.

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Area of Science:

  • Neurorehabilitation
  • Motor Recovery
  • Neural Plasticity

Background:

  • Action observation (AO) leverages the mirror-neuron system to promote neural plasticity and motor recovery in stroke patients.
  • It is a physical rehabilitation technique aimed at enhancing outcomes post-stroke.

Purpose of the Study:

  • To evaluate the efficacy of action observation (AO) in improving motor function, upper limb performance, and cortical activity in individuals with stroke.
  • Assessing AO's impact on motor recovery and daily living activities.

Main Methods:

  • Systematic review and meta-analysis of randomized controlled trials (RCTs) involving adults post-stroke.
  • Searched multiple databases including Cochrane Stroke Group, MEDLINE, and Embase up to October 2017.
  • Included RCTs of AO, alone or combined with physical practice, focusing on upper limb motor function and activities of daily living (ADL).

Main Results:

  • Twelve RCTs with 478 participants were included; many had high or unclear risk of bias.
  • Low-quality evidence suggests AO significantly improves upper limb motor function (SMD 0.36) and ADL dependence (SMD 0.86).
  • Moderate-quality evidence indicated a large significant effect on hand function (MD 2.90), though clinical relevance is uncertain. No significant adverse AO events were reported.

Conclusions:

  • Action observation (AO) shows potential benefits for upper limb motor function and ADL in stroke survivors.
  • The current evidence quality is predominantly low, necessitating caution in interpretation.
  • Future research is required to confirm these findings and establish clinical relevance, as confidence in effect estimates is limited.