Effect of Long-term Transcranial Direct Current Stimulation (tDCS) on Appetite Control Related Brain Regions

NCT ID: NCT02362633

Last Updated: 2016-02-04

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

27 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-02-28

Brief Summary

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The purpose of this study is to investigate the long-term effect of Transcranial Direct Current Stimulation (tDCS) on appetite control related brain regions.

Detailed Description

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Transcranial direct current stimulation (tDCS) is emerging tool for brain modulation in a variety of clinical conditions. In addition, recent neuroimaging studies suggest that modifying the activity of brain circuits involved in eating behavior could provide therapeutic benefits in obesity.

The investigators aim to assess whether long-term modulation of the dorsolateral prefrontal cortex (DLFPC) using tDCS, modifies behavioral response and brain activity while watching visually presented food cues and taste cues in obese subjects.

Subjects will be randomly divided into sham and real tDCS arms. Subjects will receive sham or real tDCS ten times. Subjects will be investigated before and after sham or real tDCS interventions. Subjects will perform functional MRI experiments with visual and taste food cues. Questionnaire with behavior measures, body compositions, blood tests will be performed.

Conditions

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Obesity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Real tDCS

Subjects will receive real tDCS treatment for ten times for two weeks (five times per week).

Group Type EXPERIMENTAL

real tDCS

Intervention Type DEVICE

For active tDCS, a 2 mA current will be delivered for 20 minutes with 20 second up and down ramp times. The anodal electrode will be placed on the right DLPFC (F4; 10-20 EEG system), and the cathode electrode will be placed on the left DLPFC (F4;10-20 EEG system), which is known to be related to cognitive function. The electrodes used for tDCS are saline-soaked sponges (25 cm2).

Sham tDCS

Subjects will receive sham tDCS treatment for ten times for two weeks (five times per week).

Group Type SHAM_COMPARATOR

sham tDCS

Intervention Type DEVICE

Sham tDCS will be delivered for 20 minutes. The anodal electrode will be placed on the right DLPFC (F4; 10-20 EEG system), and the cathode electrode will be placed on the left DLPFC (F4;10-20 EEG system), which is known to be related to cognitive function. The electrodes used for tDCS are saline-soaked sponges (25 cm2).

Interventions

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real tDCS

For active tDCS, a 2 mA current will be delivered for 20 minutes with 20 second up and down ramp times. The anodal electrode will be placed on the right DLPFC (F4; 10-20 EEG system), and the cathode electrode will be placed on the left DLPFC (F4;10-20 EEG system), which is known to be related to cognitive function. The electrodes used for tDCS are saline-soaked sponges (25 cm2).

Intervention Type DEVICE

sham tDCS

Sham tDCS will be delivered for 20 minutes. The anodal electrode will be placed on the right DLPFC (F4; 10-20 EEG system), and the cathode electrode will be placed on the left DLPFC (F4;10-20 EEG system), which is known to be related to cognitive function. The electrodes used for tDCS are saline-soaked sponges (25 cm2).

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* BMI \> 26 kg/m2

Exclusion Criteria

* History of brain trauma, epilepsy, or other neurological problems
Minimum Eligible Age

20 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Chungbuk National University

OTHER

Sponsor Role lead

Responsible Party

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Hyung Jin Choi

Clinical Assistant Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Chungbuk National University

Cheongju-si, North Chungcheong, South Korea

Site Status

Countries

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South Korea

Other Identifiers

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2014-07-018

Identifier Type: -

Identifier Source: org_study_id

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