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Consciousness Transcranial Alternative Electric STimulation

NCT03574883 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 67

Last updated 2025-05-16

No results posted yet for this study

Summary

The aim of this study is to investigate the effect of transcranial Alternating Current Stimulation (tACS) at theta frequency and the the effect of transcranial Direct Current Stimulation (tDCS) on the conscious access to visual stimuli. tACS and tDCS are non-invasive stimulation techniques that are used to induce brain oscillations at certain frequency or to increase the brain activity in applied region. Healthy participants will perform a behavioral task measuring conscious access (visual backward metacontrast masking task) before, during and after fronto-parietal tACS or tDCS stimulation which will increase neural activity in the two sites. This will allow us to examine online and remaining effects of the stimulation and the causal role of fronto-parietal activity on conscious access.

Conditions

  • Healthy

Interventions

DEVICE

tACS

tACS is a non-invasive stimulation technique that works by delivering a weak sinusoidally oscillating electrical current to the surface of the skull to entrain oscillations in the brain.

DEVICE

tDCS

tDCS is a form of neuromodulation method where very low levels of constant current are delivered to specifically targeted areas of the brain

Sponsors & Collaborators

  • Institut National de la Santé Et de la Recherche Médicale, France

    lead OTHER_GOV

Principal Investigators

  • Lionel NACCACHE, MD, PhD · CR-ICM U 975 /UMRS INSERM 1127

  • Jacobo D SITT, MD, PhD · CR-ICM U 975 /UMRS INSERM 1127

  • Bertrand HERMANN, MD · CR-ICM U 975 /UMRS INSERM 1127

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
DOUBLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
60 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2018-04-23
Primary Completion
2021-07-16
Completion
2021-07-16

Countries

  • France

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03574883 on ClinicalTrials.gov