Connectivity changes following transcranial alternating current stimulation at 5-Hz: an EEG study DOI Creative Commons
Tien‐Wen Lee, Gerald Tramontano

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Июнь 18, 2024

Abstract Introduction Transcranial alternating current stimulation (tACS) at 5-Hz to the right hemisphere can alleviate anxiety symptoms. This study aimed explore connectivity changes following treatment.Methods We collected electroencephalography (EEG) data from 24 participants with disorders before and after tACS treatment during a single session. Electric was applied over hemisphere, 1.0 mA F4, P4, 2.0 T8, 10–10 EEG convention. With eLORETA, scalp signals were transformed into cortex’s source density. assessed theta frequency between centers of Brodmann area (BA) 6/8 (frontal), BA 39/40 (parietal), 21 (middle temporal). Functional indicated by lagged coherences phase synchronization. Paired t-tests used quantify differences statistically.Results observed enhanced synchronization frontal parietal regions (P = 0.002) temporal 0.005), Bonferroni correction.Conclusion Applying inter-regional interaction, which spectrum-specific mainly mediated phase, rather than power, synchrony. The potential neural mechanisms are discussed.

Язык: Английский

Attention improvement to transcranial alternating current stimulation at gamma frequency over the right frontoparietal network: a preliminary report DOI
Tien‐Wen Lee, Sérgio Monteiro de Almeida, Gerald Tramontano

и другие.

Acta Neuropsychiatrica, Год журнала: 2024, Номер unknown, С. 1 - 5

Опубликована: Окт. 2, 2024

Abstract Applying transcranial alternating current stimulation (tACS) at 40 Hz to the frontal and parietal regions, either unilaterally (left or right) bilaterally, can improve cognitive dysfunctions. This study aimed explore influence of tACS gamma frequency over right fronto-parietal (FP) region on attention. The analysis is based retrospective data from a clinical intervention. We administered test variables attention (TOVA; visual mode) 44 participants with various neuropsychiatric diagnoses before after 12 sessions treatment. Alternating currents 2.0 mA were delivered electrode positions F4 P4, following 10–20 EEG convention, for 20 mins in each session. observed significant improvement across 3 indices TOVA, including reduction variability reaction time ( p = 0.0002), increase d-Prime (separability targets non-targets; 0.0157), decrease commission error rate 0.0116). mean RT omission largely remained unchanged. Artificial injection FP network may function, especially domains consistency performance, target/non-target discrimination, inhibitory control.

Язык: Английский

Процитировано

1
Effects of Transcranial Electrical Stimulation on Physiological Responses to Acute Stress: A Systematic Review DOI Creative Commons

Hannah Hart-Pomerantz,

E. M. F. Roe,

Tad T. Brunyé

и другие.

Journal of Cognitive Enhancement, Год журнала: 2024, Номер unknown

Опубликована: Дек. 9, 2024

Abstract Physiological responses to acute stress generally proceed through two phases: first, a rapid and transient sympathetic parasympathetic nervous system response, second, slow relatively sustained hypothalamic-pituitary-adrenal (HPA) response. These are associated with changes in heart rate, rate variability, electrodermal responses, blood pressure, salivary biomarkers such as alpha amylase cortisol. Through the interactions of biochemical distributed brain regions including amygdala, hippocampus, striatum, prefrontal cortex, exposure can also adversely affect cognitive function. Transcranial electrical stimulation (tES), transcranial direct, alternating, random noise (tDCS, tACS, tRNS), has been examined for its potential ability modulate physiological buffer negative impacts on This systematic review surveyed research examining effects tES healthy neurotypical samples, cardiorespiratory (e.g., rate), peripheral electrodermal), amylase, cortisol) outcomes. Sixteen reports were identified inclusion. The articles showed low high risk bias, used diverse set induction techniques methodologies, wide range We found mixed evidence effectiveness reducing suggest that some methodologies may be more promising than others. Several directions continuing proposed help elucidate mechanisms underlying clarify application enhancement domains.

Язык: Английский

Процитировано

1
Transcranial Alternating Current Stimulation: A Novel Neuromodulatory Treatment for Anxiety and Related Disorders DOI
Yahui Chen,

Bicheng Gao,

Yuqi You

и другие.

ACS Chemical Neuroscience, Год журнала: 2024, Номер 15(21), С. 3794 - 3796

Опубликована: Окт. 28, 2024

Given the high prevalence and socioeconomic burden of anxiety disorders, there is an urgent need for effective, fast-acting, cost-efficient treatment alternatives to traditional psychotherapy. Transcranial alternating current stimulation (tACS), a noninvasive brain technique that modulates endogenous oscillations via application sinusoidal currents scalp, emerges as promising neuromodulatory treatment. We reviewed oscillatory neuropsychopathology in anxiety, examined evidence tACS interventions related proposed novel simulation targets protocols. emphasize rigorously designed clinical trials systematically investigate neuropsychological effects different protocols on diverse populations with pathological anxiety.

Язык: Английский

Процитировано

0
Connectivity changes following transcranial alternating current stimulation at 5-Hz: an EEG study DOI Creative Commons
Tien‐Wen Lee, Gerald Tramontano

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Июнь 18, 2024

Abstract Introduction Transcranial alternating current stimulation (tACS) at 5-Hz to the right hemisphere can alleviate anxiety symptoms. This study aimed explore connectivity changes following treatment.Methods We collected electroencephalography (EEG) data from 24 participants with disorders before and after tACS treatment during a single session. Electric was applied over hemisphere, 1.0 mA F4, P4, 2.0 T8, 10–10 EEG convention. With eLORETA, scalp signals were transformed into cortex’s source density. assessed theta frequency between centers of Brodmann area (BA) 6/8 (frontal), BA 39/40 (parietal), 21 (middle temporal). Functional indicated by lagged coherences phase synchronization. Paired t-tests used quantify differences statistically.Results observed enhanced synchronization frontal parietal regions (P = 0.002) temporal 0.005), Bonferroni correction.Conclusion Applying inter-regional interaction, which spectrum-specific mainly mediated phase, rather than power, synchrony. The potential neural mechanisms are discussed.

Язык: Английский

Процитировано

0