Study of Low-intensity Focused Ultrasound Effects on Cognitive fMRI Signals

N/ANot Yet RecruitingNCT05303428

Virginia Polytechnic Institute and State University80 enrolled

Overview

Study aims to examine the effects of noninvasive brain stimulation on brain signals. This insight may have potential clinical implications for addiction, pain, and mental health populations. Participants will receive MRI and CT imaging. Participants receive low-intensity focused ultrasound (LIFU) to temporarily change brain activity. Participants then receive fMRI scans to measure changes in both resting and cognitive brain signaling using structured tasks. Heart rate, blood pressure, respiratory rate, and skin moisture is monitored. Participants complete a battery of questionnaires, both behavioral and symptom monitoring. The study takes place over 4 study visits.

Study Type

INTERVENTIONAL

Allocation

Purpose

BASIC_SCIENCE

Masking

NONE

Enrollment

Conditions

Cognitive Change

Interventions

Eligibility

Sex: ALLMin age: 18 YearsMax age: 65 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Healthy volunteers, all ethnicities, who understand and speak English. Exclusion Criteria: 1. Claustrophobia (scanning environment may be uncomfortable). 2. Contraindications to MRI: including pacemaker, aneurysm clips, neurostimulators, cochlear implants, metal in eyes, steel worker, or other implants. 3. Contraindications to CT: pregnancy 4. Active medical disorder or treatment with potential CNS effects (e.g. Alzheimer's) 5. History of neurologic disorder. (e.g. Parkinson's, Epilepsy, or Essential Tremor) 6. History of head injury resulting in loss of consciousness for \>10 minutes. 7. History of alcohol or drug dependence (through self-report).

Outcomes

Primary Outcomes

fMRI Signals - Cognition

Changes in fMRI signals of region of interest during a cognitive task

Time frame: Participant study duration, approximately 3 weeks.

Secondary Outcomes

Executive function task performance

Testing effects of LIFU on altered task performance