Prefrontal oscillatory stimulation modulates access to cognitive control references in retrospective metacognitive commentary

Exploring prefrontal cortex functions in healthy humans by transcranial electrical stimulation

“…Given the performancerelated alteration of oscillatory activity [31,40] , the contribution of theta activity to working memory performance was explored in subsequent studies. Left dorsolateral prefrontal oscillatory stimulation within the theta frequency range, as well as bilateral stimulation of the DLPFC, improved working memory [40,41] . Moreover, Polania and co-workers have described task-related synchronization in the theta range in the left parietal and prefrontal areas during an n-back task.…”

Enhancement of multitasking performance and neural oscillations by transcranial alternating current stimulation

“…Although processing multiple streams of content at the same time is not beyond human ability, managing overlapping attention-demanding tasks diminishes performance [1]. Optimal neural processing engaged during high-level cognitive performance has been shown to rely on cortical oscillatory synchronization in different frequency bands [2, 3], such as theta (4–7 Hz) oscillations in working memory [4], retrospective monitoring [5], and focused attention [6]. Notably, prefrontal cortical theta oscillations have been associated with multitasking performance [7, 8].…”

“…direct current) but alternate between stimulation electrodes in a frequency-specific manner. In line with the perspective that tACS is capable of influencing with endogenous brain oscillations and brain functions [11–13], numerous behavioral studies have revealed that tACS affects motor function [14–16], perception [17–19], and higher-order cognitive function [20, 21], in many cases making a correlational links between brain oscillations and behavior [5, 22, 23]. However, the investigations of the neurophysiological effects of tACS have been limited [24–26].…”

The Use of Transcranial Direct Current Stimulation for Cognitive Enhancement

“…Figure adapted with permission from Elsevier. Meiron and Lavidor (2013) applied A-tDCS over the dlPFC of healthy participants during a modified verbal n-back WM task that is highly sensitive to executive attention. They found significant lateralized "online" WM performance only during the highest WM load condition, whereby male participants benefited from left dlPFC stimulation and female participants benefited from right dlPFC stimulation.…”