Abstract
Aims: Nonmotor symptoms (NMS) such as cognitive impairment and impulse-control disorders in Parkinson's disease (PD) remain a therapeutic challenge. Transcranial direct current stimulation (tDCS) has emerged as a promising alternative, although its immediate effects on NMS have been less well defined. In this randomized, sham-controlled, crossover study, we aimed to explore the single-session tDCS effects on cognitive performance in PD. Methods: Ten nondemented patients with PD completed two sessions in counterbalanced order, receiving 20 minutes of either 2 mA anodal or sham tDCS over the left dorsolateral prefrontal cortex (DLPFC). During stimulation, they performed the visual working memory and go/no-go tasks. Performance of the tasks was compared between the two conditions. Results: Single-session anodal tDCS over the left DLPFC did not significantly improve cognitive tasks in PD compared with sham (P >.05). Conclusion: Single-session tDCS is ineffective in improving visual working memory and inhibitory control in PD. Further research may worth exploring alternative tDCS parameters, ideally with repeated sessions and concomitant training.
| Original language | English |
|---|---|
| Pages (from-to) | 1237-1243 |
| Number of pages | 7 |
| Journal | CNS Neuroscience and Therapeutics |
| Volume | 25 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - Nov 1 2019 |
Keywords
- inhibitory control
- memory
- Parkinson's disease
- tDCS
ASJC Scopus subject areas
- Pharmacology
- Psychiatry and Mental health
- Physiology (medical)
- Pharmacology (medical)
