Augmenting mirror visual feedback-induced performance improvements in older adults.

Area of Science:

• Neuroscience
• Motor Control
• Aging Research

Background:

• Age-related behavioral changes are not permanent and can be improved with training.
• Non-invasive brain stimulation (NIBS) and training can modulate brain activity and behavior in aging.
• Mirror visual feedback (MVF) training enhances motor performance in young adults.

Purpose of the Study:

• To investigate if MVF improves motor performance in older adults.
• To determine if anodal transcranial direct current stimulation (a-tDCS) can optimize MVF-induced improvements.
• To assess the combined effect of a-tDCS and MVF on manual dexterity in older adults.

Main Methods:

• Older adults underwent motor skill training with MVF.
• Anodal transcranial direct current stimulation (a-tDCS) was applied over the right primary motor cortex (M1).
• A sham stimulation group and a control group (a-tDCS only) were included for comparison.

Main Results:

• Older adults receiving a-tDCS with MVF showed significant improvements in the untrained (left) hand.
• Performance gains in the untrained hand were superior compared to sham stimulation.
• a-tDCS applied without MVF/motor training did not yield significant behavioral gains.

Conclusions:

• Combining a-tDCS with MVF effectively enhances motor performance improvements in older adults.
• This combined approach may be beneficial for optimizing neurorehabilitation.
• Future clinical studies could leverage a-tDCS and MVF for enhanced recovery.