Temporal Interference Neurostimulation and Addiction

N/ATerminatedNCT04432064

Indiana University10 enrolled

Overview

This project aims to develop a line of research using new non-invasive neurostimulation technology to treat adults with opioid use disorders (OUDs). In the short term, the investigators aim to identify novel target brain regions for neurostimulation treatment and characterize their effects behaviorally and neurally. In the longer term, investigators aim to use these preliminary data to justify NIH sponsored clinical trials to apply transcranial direct current stimulation and non-invasive deep brain stimulation to these areas to partially or completely disrupt addiction.

The investigators hypothesize that temporal interference non-invasive deep brain stimulation (TI-NDBS) will be well tolerated and effective at manipulating brain activity and reducing drug cravings. The investigators will investigate whether stimulation with a mild current from temporal interference non-invasive deep brain stimulation (TI-NDBS) to the Anterior Cingulate Cortex (ACC), the anterior insula (AI), or the nucleus accumbens (NAcc) will reduce nicotine craving and seeking. The TI-NDBS is similar to the traditional transcranial direct current stimulation (tDCS), a method approved for use in a number of other studies. Other studies have shown there have been some effects of reducing craving with tDCS, however, tDCS cannot stimulate structures such as the ACC very effectively because tDCS cannot stimulate deeper brain regions. Thus, the Specific Aim ultimately will compare TI-NDBS with tDCS and sham stimulation. The study is broken up into four phases. The first two will involve device feasibility and identifying the best locations for the electrodes to be placed. In the third phase, the investigators will compare TI-NDBS with sham stimulation. In the fourth phase, the investigators will compare TI-NDBS with sham stimulation and with tDCS.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

Conditions

Nicotine Use Disorder Substance Use Disorders

Interventions

Active TI-NDBSDEVICE

In the active TI-NDBS condition, subjects will receive stimulation for 60 minutes applied to the brain through scalp electrodes. There will be a maximum of 2 mA per electrode pair and no single region will receive more than 2 mA because the currents will be administered to distinct regions. At the beginning of each stimulation period, the current will increase slowly at a constant rate for 30 seconds until it reaches the appropriate intensity. At the end of the stimulation, the current will decrease slowly for 30 seconds until it reaches zero.

Sham TI-NDBSOTHER

This is the control condition in which participants will receive sham stimulation for 60 minutes.

tDCSDEVICE

This is a well established method of brain stimulation and will be used to compare against the efficacy of TI-NDBS in the reduction of nicotine craving and inhalation. Participants will receive stimulation for 60 minutes.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 50 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Must be between the ages of 18 and 50, must have at least 6th grade education, and the ability to speak and read English, must smoke at least 3/4 of a pack of cigarettes per day, must have phone with internet access. Exclusion Criteria: * if they are on psychotropic medications for ADHD, other mental illness or medication for cancer, epilepsy (i.e. individuals with any history of seizure disorder), migraines, or other neurological syndromes, or AIDs (which can cause cognitive deficits (Watkins \& Treisman, 2015), history of head trauma, history of cognitive impairments, metal implants in the head or under the scalp, personal experiences consistent with symptoms of psychosis (i.e. mind or body being secretly controlled, special powers, seeing or hearing things that aren't really there). * Subjects will be excluded if they do not meet fMRI safety screening criteria (i.e. metal implants in their body, tattoo on head or neck, permanent jewelry, etc.) or if a participant uses an IUD for birth control they will be excluded unless the subject can document the model of the IUD and we can verify its safety for the MRI environment. Pregnancy should be self-reported, and a pregnancy test will not be administered. Participants must also weigh less than 440 lbs. * History of holes bored into skull or known fissures in cranial bones * Presence of pacemakers

Locations (1)

Indiana University

Bloomington, Indiana, United States

Outcomes

Primary Outcomes

Change in Nicotine Craving

The investigators predict that TI-NDBS will outperform sham stimulation at an overall change in smoking and cigarette craving, which in turn will outperform sham stimulation. The investigators will sum the total inhaled nicotine vapor volume in liters over the 60 minute session and perform pairwise t-tests to determine if total drug intake is lower with TI-NDBS vs tDCS. Also, the investigators will average the self reported craving levels on a Likert scale across each subject during the 60 minute session, and the investigators will perform pairwise tests to determine if stimulation lowers self reported craving. \*\*The Likert scale is 0-10, where 10 is maximum craving. The units are units on a scale.\*\* \*\*The outcome measure is computed by taking the pre-stimulation craving and subtracting the post-stimulation craving. Positive numbers indicate the degree to which the self-reported craving was reduced after the stimulation relative to before stimulation\*\*

Time frame: Each subject was asked to report their craving during the day of the session, before and after the stimulation. Approximately one hour elapsed between before and after nicotine craving measurements. The session was carried out during the daytime.

Data from ClinicalTrials.gov

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