Frontiers | Enhancing upper-limb neurorehabilitation in chronic stroke survivors using combined action observation and motor imagery therapy
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Motor imagery ability
To assess MI ability, participants completed the MIQ-3 measure at the baseline and retention test. This measure has good psychometric properties, internal reliability, and predictive validity (86). Participants self-reported the ease with which they could generate imagined acti
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Summary
- 🧠 **Motor Imagery Assessment**: Participants evaluated their motor imagery (MI) ability using the MIQ-3 measure, focusing on ease of generating imagined actions like lifting a cup.
- 🎨 **Imagery Perspectives**: The study assessed participants' preferences for internal vs. external visual perspectives while generating imagery, tracking changes over time.
- ⚠️ **Limitations of MI**: The research suggests that MI may be less effective for neurorehabilitation due to challenges in self-generating action-related feedback, which is essential for motor planning.
- 📈 **Training Benefits**: Participants reported improved ease of generating both visual and kinaesthetic imagery during combined action observation (AO) and MI training compared to MI alone.
- ⚡ **Corticospinal Excitability**: The combined AO + MI training resulted in significantly greater corticospinal excitability compared to both AO and control conditions, indicating enhanced neural engagement.
Top Highlights
- Motor imagery ability To assess MI ability, participants completed the MIQ-3 measure at the baseline and retention test. This measure has good psychometric properties, internal reliability, and predictive validity (86). Participants self-reported the ease with which they could generate imagined actions, such as a cup lift and arm abduction (1 = ver...
- In the current study, we instead used the generic item “ease of generating visual imagery” and then required participants to indicate “perspective used” (internal or external). This assessed the ease or difficulty of generating the visual components of the imagined cup-stacking task and additionally allowed us to monitor changes in their preference...
- MI may be a sub-optimal neurorehabilitation tool for this experience due to the limitations inherent in the self-generation of action-related feedback, crucial for updating, maintaining, or creating an accurate motor plan de novo
- This concept is supported by our data, whereby participants reported that they found the ease of generating imagery increased during AO + MI training in comparison to MI training in both the visual imagery and kinaesthetic imagery subscales.
- . During AO + MI, however, corticospinal excitability was significantly greater than both the AO and a control condition.
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