Transcranial alternating current stimulation for investigating complex oscillatory dynamics and interactions DOI Creative Commons

Samira Barzegar,

Carolina F M Kakies,

Dorina Ciupercӑ

и другие.

International Journal of Psychophysiology, Год журнала: 2025, Номер 212, С. 112579 - 112579

Опубликована: Май 1, 2025

Neural oscillations play a fundamental role in human cognition and behavior. While electroencephalography (EEG) related methods provide precise temporal recordings of these oscillations, they are limited their ability to generate causal conclusions. Transcranial alternating current stimulation (tACS) has emerged as promising non-invasive neurostimulation technique modulate neural which offers insights into functional relation Originally, tACS is applied between two or more electrodes at given frequency. However, recent advances have aimed apply different waveforms target specific oscillatory dynamics. This systematic review evaluates the efficacy non-standard applications designed investigate patterns beyond simple sinusoidal stimulation. We categorized approaches three key domains: (1) phase synchronization techniques, including in-phase, anti-phase, traveling wave stimulation; (2) non-sinusoidal tACS, applies alternative such composite, broadband triangular oscillations; (3) amplitude-modulated interference stimulation, allow for concurrent EEG deeper cortical targeting. number studies evidence added value procedures, other show opposing null findings. Crucially, most currently low, such, goal this highlight both promise limitations providing foundation future research neurostimulation.

Язык: Английский

Parietal alpha and theta power predict cognitive training gains in middle-aged adults DOI Creative Commons
Luka Juras, Ivana Hromatko, Andrea Vranić

и другие.

Frontiers in Aging Neuroscience, Год журнала: 2025, Номер 17

Опубликована: Март 13, 2025

Research on executive functions training shows inconsistent outcomes, with factors like age, baseline cognitive abilities, and personality traits implicated as predictive of gains, while limited attention has been given to neurophysiological markers. Theta alpha band power are linked performance, suggesting a potential area for further study. This study aimed determine whether relative theta their ratio could predict gains in updating inhibition beyond the practice effects (the order session). Forty healthy middle-aged adults (aged 49–65) were randomly assigned either group ( n = 20), or communication skills (control) 20). Both groups completed self-administered sessions twice week 10 weeks, totaling 20 sessions. Resting-state EEG data recorded before first session. Mixed-effects model analyses revealed that higher parietal positively predicted negatively performance. Additionally, alpha/theta was associated better frontal did not demonstrate significant value. Other measures show additional what accounted by session effects. The findings imply individuals specific pattern may change training, making resting-state useful tool tailoring interventions.

Язык: Английский

Процитировано

0
Transcranial alternating current stimulation for investigating complex oscillatory dynamics and interactions DOI Creative Commons

Samira Barzegar,

Carolina F M Kakies,

Dorina Ciupercӑ

и другие.

International Journal of Psychophysiology, Год журнала: 2025, Номер 212, С. 112579 - 112579

Опубликована: Май 1, 2025

Neural oscillations play a fundamental role in human cognition and behavior. While electroencephalography (EEG) related methods provide precise temporal recordings of these oscillations, they are limited their ability to generate causal conclusions. Transcranial alternating current stimulation (tACS) has emerged as promising non-invasive neurostimulation technique modulate neural which offers insights into functional relation Originally, tACS is applied between two or more electrodes at given frequency. However, recent advances have aimed apply different waveforms target specific oscillatory dynamics. This systematic review evaluates the efficacy non-standard applications designed investigate patterns beyond simple sinusoidal stimulation. We categorized approaches three key domains: (1) phase synchronization techniques, including in-phase, anti-phase, traveling wave stimulation; (2) non-sinusoidal tACS, applies alternative such composite, broadband triangular oscillations; (3) amplitude-modulated interference stimulation, allow for concurrent EEG deeper cortical targeting. number studies evidence added value procedures, other show opposing null findings. Crucially, most currently low, such, goal this highlight both promise limitations providing foundation future research neurostimulation.

Язык: Английский

Процитировано

0