Association between visuo-spatial working memory and gait motor imagery.

Area of Science:

• Cognitive Neuroscience
• Motor Control
• Human Movement Science

Background:

• Motor imagery and working memory (WM) are theoretically linked.
• Empirical evidence directly linking motor imagery and WM abilities remains scarce.
• Individual differences in these cognitive functions warrant further investigation.

Purpose of the Study:

• To investigate the association between working memory (WM) domains and gait motor imagery.
• To examine individual differences in young adults concerning WM and gait motor imagery.
• To determine if visuo-spatial or verbal WM better predicts gait motor imagery performance.

Main Methods:

• Assessed verbal and visuo-spatial WM using established methods.
• Measured gait motor imagery accuracy via a mental chronometry paradigm.
• Participants completed actual and imagined walks on a 5m walkway with varying path widths.

Main Results:

• Visuo-spatial WM ability significantly predicted gait motor imagery accuracy.
• Verbal WM ability did not predict gait motor imagery accuracy.
• Lower visuo-spatial WM correlated with greater inaccuracies in narrow path conditions.
• Gait motor imagery accuracy was lower than actual walking, even for high WM individuals.
• Visuo-spatial WM correlated with mental walking, but not actual walking.

Conclusions:

• Visuo-spatial working memory is a significant factor in gait motor imagery performance.
• The findings highlight the role of visuo-spatial WM in simulating movement.
• Motor imagery relies more on visuo-spatial WM than on actual motor execution.