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The Effects of Transcranial Direct Current Stimulation on the Cognitive Functions in Older Adults with Mild Cognitive
Pablo Cruz Gonzalez1, Kenneth N K Fong1, Ted Brown2
1Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong, Hong Kong.
Objective:
The aim of this pilot study was to investigate whether the use of anodal transcranial direct current stimulation (tDCS) on the left dorsolateral prefrontal cortex could boost the effects of a cognitive stimulation (CS) programme using a tablet on five older adults with mild cognitive impairment (MCI).
Method:
A single-subject study of A-B-C-A design was used. After the baseline with the administration of CS (phase A), a sham treatment with CS was applied (B). Following the withdrawal of sham treatment, tDCS was introduced in combination with CS (C). Finally, phase A was replicated a second time.
Results:
tDCS had a significant effect on processing speed, selective attention, and planning ability tasks in terms of performance and completion time.
Conclusion:
tDCS appears to have a positive impact on some cognitive components in CS in persons with MCI. Further study on its long-term effects and generalization of power to daily activities is warranted.
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