Visuomotor skill learning in young adults with Down syndrome

Area of Science:

• Motor Learning
• Neurorehabilitation
• Developmental Disabilities

Background:

• Individuals with Down syndrome (DS) exhibit deficits in general motor skills compared to typically developed (TD) individuals.
• Understanding motor skill acquisition and retention in DS is crucial for targeted interventions.

Purpose of the Study:

• To investigate the online and offline motor learning processes in young adults with DS.
• To compare motor skill acquisition and retention between adults with DS and age-matched TD individuals.

Main Methods:

• A visuomotor accuracy tracking task (VATT) was administered to groups of adults with DS (N=11) and TD individuals (N=14).
• Motor performance was assessed at baseline, immediately after practice, and after a 7-day retention interval to evaluate online and offline learning effects.

Main Results:

• The TD group consistently outperformed the DS group on the VATT.
• Both groups demonstrated significant online improvements in VATT performance with practice.
• The DS group showed significant retention of motor skills after 7 days, unlike the TD group which exhibited a performance decrease.

Conclusions:

• Adults with DS have lower visuomotor pinch force accuracy but learn motor skills effectively through practice.
• The DS group exhibits robust offline consolidation and retention of newly acquired motor skills.
• Findings suggest that individuals with DS can benefit from motor learning interventions targeting skill acquisition and long-term retention.