Other Clinical Trial - Impact of tDCS on Emotional Processing in Healthy

Status Terminated

Clinical Trial Summary

The dorsolateral prefrontal cortex (DLPFC) plays a key part in emotional processing and regulation.

Emotions continually influence other cognitive functions such as attentional resources .Emotions also influence a subject's automatic physiological responses .

Transcranial direct current stimulation (tDCS) is an innovative neuro-modulation treatment, often used in major depression.

Various studies have shown that it is possible to modulate emotional processing in healthy subjects, however the impact of this modulation on attentional resources and physiological responses has not been studied. Also, the mechanisms of action of the tDCS on emotional processing are still unclear.

It is necessary to explore the modulation of the DLPFC in healthy subjects in order to better understand the network and mechanisms at stake in the processes.

Thus, investigators plan to study the modulation of the DLPFC (left and right) by tDCS (anode, cathode and placebo) on the processing of emotions and the impact on attentional resources, and physiological responses.

Clinical Trial Description

To study the modulation of the DLPFC (left and right) by tDCS (anode, cathode and placebo) on the processing of emotions and the impact on attentional resources, and physiological responses, subjects will undertake 3 tasks before and after a unique tDCS session of 30 minutes.

The first task is a facial expression recognition task, the second measures the attentional processing of emotional information ("Free-viewing task") and the last task focuses on working memory (digit sorting task).

Each task has its cognitive variables but physiological responses will also be measured during each task before and after the tDCS session (Eye movement, i.e. Pupil dilatation and time spent on region of interest; heart rate, skin conductance and respiratory frequency).

3 arms will take part in the study: Anode tDCS Cathode tDCS Placebo tDCS These 3 types of tDCS stimulation will enable us to study the different modulations possible for the DLPFC and the impact on all the variables previously mentioned. ;

Study Design

Related Conditions & MeSH terms

Transcranial Direct Current Stimulation

Clinical Trial Details

NCT number	NCT03286075
Study type	Interventional
Source	Hôpital le Vinatier
Contact
Status	Terminated
Phase	N/A
Start date	July 16, 2018
Completion date	February 12, 2019

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Impact of tDCS on Emotional Processing in Healthy Subjects. — EmoStimH

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms