Perceptibility and Pain Thresholds in Low- and High-Frequency Alternating Current Stimulation: Implications for tACS and tTIS DOI Creative Commons

Carsten Thiele,

C Tamm,

Philipp Ruhnau

et al.

Journal of Cognitive Enhancement, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 6, 2024

Abstract Transcranial electrical stimulation (tES) has emerged as a promising tool for neuromodulation, but its application is often limited by the discomfort associated with higher intensities. Newer variants like transcranial temporal interference (tTIS) utilize high-frequency alternating currents (≥ 500 Hz) to penetrate deeper brain regions while mitigating perceptual discomfort. This study sought examine sensation and pain thresholds across various frequencies of currents, aiming explore boundaries comfortable Additionally, we evaluate efficacy an anesthetizing topical cream in increasing participant comfort potentially extending range tolerable levels. We recruited 37 participants applied current head at (10 Hz, 20 1000 2000 determine intensity-dependent perception thresholds. were determined under influence anesthetic. Our findings confirm that frequency increases, perceptibility decreases, allowing manyfold increase intensity before becoming perceptible or causing pain. was efficacious further reducing sensations all frequencies. lays groundwork future research establishing limits intensities, particularly context stimulation. The reduced stimulation, coupled effectiveness creams, enables administration intensities more potent neuromodulatory interventions without

Language: Английский

The Effect of Electrical Stimulation Strength Training on Lower Limb Muscle Activation Characteristics During the Jump Smash Performance in Badminton Based on the EMS and EMG Sensors DOI Creative Commons
Xinyu Lin, Yimin Hu, Yi Sheng

et al.

Sensors, Journal Year: 2025, Volume and Issue: 25(2), P. 577 - 577

Published: Jan. 20, 2025

This study investigates the effects of electrical stimulation (EMS) combined with strength training on lower limb muscle activation and badminton jump performance, specifically during “jump smash” movement. A total 25 male players, a minimum three years professional experience no history injuries, participated in study. Participants underwent distinct conditions: baseline testing, training, EMS training. Each participant performed specific tests, including smash static squat jump, under each condition. Muscle was measured using electromyography (EMG) sensors to assess changes key muscles. The intervention involved targeted pulses designed stimulate both superficial deep fibers, aiming enhance explosive coordination limbs. results revealed that + condition significantly improved performance as compared strength-only conditions (F = 3.39, p 0.042; F 3.67, 0.033, respectively). Additionally, increased rectus femoris (RF) observed condition, indicating recruitment synchronization, likely due fast-twitch fibers. No significant differences were found eccentric-concentric 0.59, 0.561). findings suggest EMS, when is an effective method for enhancing explosiveness offering promising approach improving high-intensity, movements.

Language: Английский

Citations

1

Impact of transcranial electrical stimulation on serum neurotrophic factors and language function in patients with speech disorders DOI Open Access
Li Sun, Kai Xiao, Xiaoyan Shen

et al.

World Journal of Clinical Cases, Journal Year: 2024, Volume and Issue: 12(10), P. 1742 - 1749

Published: April 2, 2024

Speech disorders have a substantial impact on communication abilities and quality of life. Traditional treatments such as speech psychological therapies frequently demonstrate limited effectiveness patient compliance. Transcranial electrical stimulation (TES) has emerged promising non-invasive treatment to improve neurological functions. However, its in enhancing language functions serum neurofactor levels individuals with requires further investigation.

Language: Английский

Citations

1

Perceptibility and Pain Thresholds in Low- and High-Frequency Alternating Current Stimulation: Implications for tACS and tTIS DOI Creative Commons

Carsten Thiele,

C Tamm,

Philipp Ruhnau

et al.

Journal of Cognitive Enhancement, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 6, 2024

Abstract Transcranial electrical stimulation (tES) has emerged as a promising tool for neuromodulation, but its application is often limited by the discomfort associated with higher intensities. Newer variants like transcranial temporal interference (tTIS) utilize high-frequency alternating currents (≥ 500 Hz) to penetrate deeper brain regions while mitigating perceptual discomfort. This study sought examine sensation and pain thresholds across various frequencies of currents, aiming explore boundaries comfortable Additionally, we evaluate efficacy an anesthetizing topical cream in increasing participant comfort potentially extending range tolerable levels. We recruited 37 participants applied current head at (10 Hz, 20 1000 2000 determine intensity-dependent perception thresholds. were determined under influence anesthetic. Our findings confirm that frequency increases, perceptibility decreases, allowing manyfold increase intensity before becoming perceptible or causing pain. was efficacious further reducing sensations all frequencies. lays groundwork future research establishing limits intensities, particularly context stimulation. The reduced stimulation, coupled effectiveness creams, enables administration intensities more potent neuromodulatory interventions without

Language: Английский

Citations

1