A single session of online tDCS over the left dorsolateral prefrontal cortex improves visual working memory

Abstract Background: Previous studies have mainly demonstrated the overall effect of transcranial direct current stimulation (tDCS) on working memory (WM). However, segregative effects offline and online tDCS over left dorsolateral prefrontal cortex (dlPFC) subtypes within WM are still under debate. Here, present research explores that one session anodal dlPFC has potential to improve different aspects performance. Methods: Twenty-eight participants were randomized receive 20 min either (1.5 mA) or control (sham) applied in a randomized, double-blind design. Visual was evaluated through Sternberg task by manipulating stimuli congruency cognitive load during (i.e., ongoing stimulation) application tDCS, whereas verbal episodic (Selective Reminding Test Direct Digits) assessed after-effects) tDCS. Results: After real but not sham stimulation, significantly improved performance reducing reaction times increasing accuracy particularly for those conditions with higher demands. Overall, group 10% more accurate than after single No significant detected assessment short-term Conclusions: These findings support idea can impact visual predominantly suggest may when networks become overtaxed demands complex processes required. Our contribute development effective protocols be treatment clinical populations deficits. Research Category Technology Methods Basic Research: 9. Transcranial Current Stimulation Keywords: Working memory, Dorsolateral