NCT04021537

Brief Summary

People often have difficulty sleeping. Reasons are many. But, difficulty falling and staying asleep are common issues. Sleep difficulties are common in disorders such as Post Traumatic Stress Disorder. Current treatments for sleep difficulties are not effective for everyone. Better treatments are needed. In this study, the investigators are testing two nerve stimulation locations that may impact brain function in such a way that sleep is improved.

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
87

participants targeted

Target at P50-P75 for not_applicable

Timeline
4mo left

Started Jan 2020

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress95%
Jan 2020Oct 2026

First Submitted

Initial submission to the registry

June 25, 2019

Completed
21 days until next milestone

First Posted

Study publicly available on registry

July 16, 2019

Completed
7 months until next milestone

Study Start

First participant enrolled

January 30, 2020

Completed
5.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 1, 2025

Completed
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

October 1, 2026

Expected
Last Updated

March 2, 2026

Status Verified

February 1, 2026

Enrollment Period

5.7 years

First QC Date

June 25, 2019

Last Update Submit

February 26, 2026

Conditions

Outcome Measures

Primary Outcomes (1)

  • Polysomnography

    Polysomnography measures. Slow wave sleep time. Rem sleep time.

    One night comparison

Study Arms (2)

non-invasive nerve stimulation a

EXPERIMENTAL

Electrical stimulation will be delivered to a location at the ear.

Device: non-invasive nerve stimulation

non-invasive nerve stimulation b

SHAM COMPARATOR

Electrical stimulation will be delivered to a location at the ear for two minutes and rolled off to zero slowly.

Device: non-invasive nerve stimulation

Interventions

Electrical stimulation will be provided via a TENS unit.

non-invasive nerve stimulation anon-invasive nerve stimulation b

Eligibility Criteria

Age18 Years - 55 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Condition: Hx VA/DOD criteria PTSD w or w/o mTBI and current sig symptoms of PTSD
  • English fluency

You may not qualify if:

  • Neurological injuries or conditions aside from mTBI that may affect outcome variables and/or other variables in the study
  • Psychiatric issues that are unlikely to be related to trauma that may affect outcomes and/or other variables in the
  • e.g., schizophrenia
  • Untreated sleep apnea
  • CPAP controlled sleep apnea is okay
  • Major uncorrected sensory deficit
  • Current drug or alcohol abuse
  • Marijuana use or alcohol intoxication within 2 weeks of study will be acceptable
  • No pregnancy

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

North Florida/South Georgia Veterans Health System, Gainesville, FL

Gainesville, Florida, 32608-1135, United States

Location

Related Publications (1)

  • Bottari SA, Trifilio ER, Rohl B, Wu SS, Miller-Sellers D, Waldorff I, Hadigal S, Jaffee MS, Ferri R, Lamb DG, Porges EC, Williamson JB. Optimizing transcutaneous vagus nerve stimulation parameters for sleep and autonomic function in veterans with posttraumatic stress disorder with or without mild traumatic brain injury. Sleep. 2025 Aug 14;48(8):zsaf152. doi: 10.1093/sleep/zsaf152.

MeSH Terms

Conditions

Stress Disorders, Post-Traumatic

Condition Hierarchy (Ancestors)

Stress Disorders, TraumaticTrauma and Stressor Related DisordersMental Disorders

Study Officials

  • John B. Williamson, PhD

    North Florida/South Georgia Veterans Health System, Gainesville, FL

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR
Purpose
TREATMENT
Intervention Model
CROSSOVER
Model Details: The study is a cross-over design comparing two stimulation types. The order of stimulation is randomly assigned. Note, there is also a dosing study. Enrollment includes the dosing study (21 participants, 3 nights each). crossover enrollment = 66
Sponsor Type
FED
Responsible Party
SPONSOR

Study Record Dates

First Submitted

June 25, 2019

First Posted

July 16, 2019

Study Start

January 30, 2020

Primary Completion

October 1, 2025

Study Completion (Estimated)

October 1, 2026

Last Updated

March 2, 2026

Record last verified: 2026-02

Data Sharing

IPD Sharing
Will not share

Locations