Frontal Midline Theta Transcranial Alternating Current Stimulation Enhances Immediate Consolidation of Episodic Memory

Shtoots, Limor; Nadler, Asher; Partouche, Roni; Rothstein, Aryeh; Shati, Liran; Levy, Daniel

doi:10.2139/ssrn.4213081

Cited by 2 publications

(1 citation statement)

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“…Based on these and complementary research findings, FMT was also proposed as an attractive target for induced modulation – not only for therapeutic purpose and cognitive or emotional enhancement, but also for a more specific investigation of this oscillatory brain activity itself. To this aim, various approaches were developed during the last decades to externally modulate FMT with transcranial alternating current stimulation (tACS; Chander et al, 2016; Shtoots et al, 2022), transcranial direct current stimulation (tDCS; Choe et al, 2016; Miller et al, 2015) or low intensity focused ultrasound (LITFUS; Forster et al, 2023; Ziebell et al, 2022). In addition to these external tools, means that enable the intrinsic modulation of FMT have also been established, in particular neurofeedback (see Table 1).…”

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confidence: 99%

Modulation of Human Frontal Midline Theta by Neurofeedback: A Systematic Review and Quantitative Meta-Analysis

Pfeiffer,

Kübler,

Hilger

2023

Preprint

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Human brain activity can be subdivided into different frequency bands associated with varying functions. Oscillatory activity of frontal brain regions in the theta range (4-8Hz) has been linked to cognitive processing and recent research suggests that it can be modulated by neurofeedback - a technique where participants receive real-time feedback about their brain activity and learn to modulate it. However, criticism of this technique evolved, and high heterogeneity of study designs complicates a valid evaluation of its effectiveness. This meta-analysis provides the first systematic overview over studies attempting to modulate frontal midline theta with neurofeedback in healthy human participants. Out of 1431 articles screened, 14 studies were eligible for systematic review and 11 studies for quantitative meta-analyses. Studies were evaluated following the DIAD model and the PRISMA guidelines. A significant across-study effect of medium size (Hedges’g= .66; 95%-CI [−0.62, 1.73]) with substantial between-study heterogeneity (Q(16) = 167.43,p< .0001) was observed. We discuss moderators of effect sizes and provide guidelines for future research in this dynamic field.

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