Examining the Impact of Transcranial Focused Ultrasound (tFUS) on Reward Neural Circuitry

The investigators aim to examine the immediate effect of transcranial focused ultrasound (tFUS) on brain activity and emotions in healthy adults as a first stage toward understanding the predisposing brain mechanisms of underlying substance use disorders.

Study Overview

• Status: Withdrawn
• Conditions: Impulsive Behavior
• Intervention / Treatment: Device: tFUS; Device: Sham tFUS

Detailed Description

In a small pilot study the investigators propose to demonstrate feasibility of using tFUS to target the ventral striatum (VS) in humans by examining VS target engagement by tFUS in healthy human volunteers using a reward processing task that reliably activates the VS.

• Study Type: Interventional
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United States
  • Pennsylvania
    • Pittsburgh, Pennsylvania, United States, 15213
      • University of Pittsburgh Medical Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• 18-35 years of age
• No psychiatric history

Exclusion Criteria:

• Not between 18-35 years of age
• Has psychiatric history
• History of head injury, neurological, pervasive developmental disorder (e.g. autism), systemic medical disease and treatment (medical records, participant report)
• Mini-Mental State Examination (MMSE) score (cognitive state) <24
• Premorbid North American Adult Reading Test (NAART) intelligent quotient (IQ) estimate<85
• Visual disturbance: <20/40 Snellen visual acuity
• Left/mixed handedness (Annett criteria)
• History of alcohol/substance use disorder (SUD) (all substances, including nicotine), and/or illicit substance use (except cannabis) over the last 6 months (Structured Clinical Interview for Diagnostic and Statistic Manual of Mental Disorders , 5th Edition (DSM-5) (SCID-5)). Urine tests on scan days will exclude current illicit substance use (except cannabis). Salivary alcohol tests on scan days will exclude intoxicated individuals
• Magnetic resonance imaging (MRI) exclusion: metallic objects, e.g., surgical implants; claustrophobia; positive pregnancy test for females or self-report pregnancy
• Unable to understand English
• Individuals with a positive pregnancy test will be excluded from the study and not undergo a computerized tomography (CT) scan or MRI scan
• Present or history of seizure disorder

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Basic Science
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: VS tFUS/Sham tFUS; VS tFUS (tFUS applied to the ventral striatum) Sham tFUS (go through the motions of applying tFUS to the VS)	Device: tFUS; tFUS is a brief stimulation of a part of the brain called the ventral striatum with low-intensity sound waves that pass through the scalp and skull safely.; Device: Sham tFUS; Sham tFUS goes through the motions of applying tFUS to the brain. Participants will know that one session will be a sham, but they will be blinded to which session is the sham
Experimental: Sham tFUS/VS tFUS; VS tFUS (tFUS applied to the ventral striatum) Sham tFUS (go through the motions of applying tFUS to the VS)	Device: tFUS; tFUS is a brief stimulation of a part of the brain called the ventral striatum with low-intensity sound waves that pass through the scalp and skull safely.; Device: Sham tFUS; Sham tFUS goes through the motions of applying tFUS to the brain. Participants will know that one session will be a sham, but they will be blinded to which session is the sham

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Blood oxygen level-dependent (BOLD) signal	The blood oxygen level-dependent (BOLD) signal indicates brain activity and connectivity	30-60 minutes

Collaborators and Investigators

• Sponsor: Mary Phillips, MD MD (Cantab)
• Investigators: Principal Investigator: Mary Phillips, MD, MD, University of Pittsburgh; Principal Investigator: Fabio Ferrarelli, MD, PhD, University of Pittsburgh; Principal Investigator: Khaled Moussawi, MD, PhD, University of Pittsburgh

Study record dates

Study Major Dates

• Study Start (Actual): June 19, 2023
• Primary Completion (Actual): December 1, 2024
• Study Completion (Estimated): December 1, 2024

Study Registration Dates

• First Submitted: April 24, 2023
• First Submitted That Met QC Criteria: May 15, 2023
• First Posted (Actual): May 25, 2023

Study Record Updates

• Last Update Posted (Estimated): December 13, 2024
• Last Update Submitted That Met QC Criteria: December 9, 2024
• Last Verified: December 1, 2024

More Information

Terms related to this study

• Keywords: Magnetic Resonance Imaging; transcranial focused ultrasound
• Additional Relevant MeSH Terms: Impulsive Behavior
• Other Study ID Numbers: STUDY23020148

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: Informed consent will be collected from study participants that allows for broad sharing of participants' de-identified data. Data transfer procedures will be in accordance with all Institutional Review Board guidelines and federal regulations including HIPAA (Health Insurance Portability and Accountability Act of 1996).
• IPD Sharing Time Frame: The principal investigators (PIs) reserve the right to publish on the stated aims in a timely manner. Data will be available for addressing other research questions (i.e. which are not described in funded/pending grants) as soon as the data have been checked for accuracy (a period which will be no later than one year after the completion of each assessment). After the study has ended, the study investigators will continue to test the stated aims, but will also continue to solicit collaborations with outside researchers and to consider data requests in a timely manner.
• IPD Sharing Access Criteria: Outside investigators must submit a 1)proposal of the study aims, hypotheses, variables/constructs, analytic approach, and estimated duration of the proposed research; 2)resume, qualifications, source of financial support, and conflict of interest statement; 3)sign a data-sharing agreement and confidentiality statement that stipulates using the data for the stated research purposes only, securing the data using appropriate computer technology, not manipulating the data in order to identify participants, acknowledging the grant that supported data collection and management in publications/presentations, and destroying or returning the data after analyses are complete; 4)obtain approval from their Institutional Review Board, and along with other staff members who have access to the data, submit certificates of the University of Pittsburgh Education and Certification Program in Research Practice Fundamentals or provide written documentation pf similar human subjects protection training.

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: Yes
• product manufactured in and exported from the U.S.: No