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NCT04113850 · ClinicalTrials.gov registry record · NA
Mobile Acoustic Startle Reflex-monitoring System (MARS)
A NA study, sponsored by Johns Hopkins University.
- Completed
- Registry status
- NA
- Development phase
- 55
- Enrollment target
NCT04113850: Completed NA study, sponsored by Johns Hopkins University.
NCT04113850 is a NA study that has completed, run by Johns Hopkins University. The registered enrollment target is 55 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (96% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04113850, a NA study, has completed, sponsored by Johns Hopkins University.
- COMPLETED
- Registry status
- NA
- Development phase
- 55 participants
- Enrollment target
Study Summary
This is a pilot study of 55 adult male veterans with PTSD. The study will test a new mobile application "app" that can be run on an iPhone10. The app, which is called the Mobile Acoustic startle Reflex-monitoring System (a.k.a., MARS), will be used to measure participant's acoustic startle in sitting or standing postures.
Primary Outcome
The acoustic startle response is the physiological measurement of eye-blink reflex following a sound. In the present protocol, various intensities of sound will be played using specialized equipment that plays sound through noise-cancelling earphones. The acoustic startle measure will be obtained using an "App" on an Apple iPhone 10. The primary startle response outcome is the time in seconds (typically milliseconds) between the playing of the sound, and the individual's eyeblink.
Interventions
- DEVICE Mobile Acoustic startle Reflex monitoring System (MARS)
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 55 participants |
| Start Date | 2020-11-28 |
| Est. Completion | 2021-06-01 |
| Phase | NA |
What the finished NCT04113850 record still lists
NCT04113850 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 55 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (96% lower).
The record links to 0 conditions, and to 1 intervention - of which Mobile Acoustic startle Reflex monitoring System (MARS) is the first listed.
NCT04113850 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT04113850 about?
NCT04113850 is a clinical study titled "Mobile Acoustic Startle Reflex-monitoring System (MARS)". This is a pilot study of 55 adult male veterans with PTSD. The study will test a new mobile application "app" that can be run on an iPhone10. The app, which is called the Mobile Acoustic startle Reflex-monitoring System (a.k.a., MARS), will be used to measure participant's acoustic startle in sittin...
What is the current status of trial NCT04113850?
This trial is currently completed. It is a NA study. The enrollment target is 55 participants. The study started on 2020-11-28. Estimated completion is 2021-06-01.
What interventions are being tested in trial NCT04113850?
The interventions under investigation include: Mobile Acoustic startle Reflex monitoring System (MARS) (DEVICE).
Who is sponsoring clinical trial NCT04113850?
This trial is sponsored by Johns Hopkins University, which has 1,448 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT04113850's enrollment target sits among peer trials
55 1264th of 2000 higher than 733 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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