Mental imagery for promoting relearning for people after stroke: a randomized controlled trial

Area of Science:

• Neuroscience
• Rehabilitation Medicine
• Psychology

Background:

• Stroke rehabilitation aims to restore daily living activities.
• Traditional methods may not fully optimize relearning and skill generalization.
• Exploring novel therapeutic strategies is crucial for post-stroke recovery.

Purpose of the Study:

• To evaluate the efficacy of mental imagery in promoting relearning of daily tasks for stroke patients.
• To compare mental imagery-based intervention with conventional functional training.
• To assess the impact of mental imagery on skill retention and transfer.

Main Methods:

• A prospective, randomized controlled trial was conducted with 46 stroke inpatients (≥60 years).
• Participants received 15 sessions of either mental imagery or conventional functional training over 3 weeks.
• Outcomes included performance on trained/untrained daily tasks, Fugl-Meyer Assessment, and Color Trails Test (CTT).

Main Results:

• Mental imagery group showed superior relearning of trained (P<.005) and untrained tasks (P<.001) compared to controls.
• Enhanced skill retention after 1 month and generalization to untrained tasks (P<.001) were observed in the imagery group.
• The mental imagery group demonstrated significant improvement in CTT scores post-intervention (P<.005).

Conclusions:

• Mental imagery serves as an effective training strategy for promoting relearning of daily tasks post-stroke.
• The imagery process likely enhances the planning and execution of both familiar and novel tasks.
• This approach aids stroke survivors in retaining and generalizing skills acquired during rehabilitation.