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Showing 1–24 of 27 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Fear Conditioning Clear all
Completed No phase listed Observational Accepts healthy volunteers

Epi-Genetic Modulators of Fear Extinction in Alcohol Dependence

NCT02438969
View directory record Official record
Conditions
Fear, Stress, Alcohol Dependence
Interventions
Not listed
Lead sponsor
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
NIH
Eligibility
21 Years to 65 Years
Enrollment
96 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2022
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Jul 23, 2026, 8:15 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Cannabidiol Effects on Learning and Anxiety

NCT05283382
View directory record Official record
Conditions
Anxiety and Fear
Interventions
Cannabidiol Oral Product, Placebo
Drug · Other
Lead sponsor
University of Connecticut
Other
Eligibility
18 Years to 50 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Jul 23, 2026, 8:15 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Overgeneralization of Conditioned Fear as a Pathogenic Marker of Anorexia Nervosa

NCT02148042
View directory record Official record
Conditions
Anorexia, Generalized Anxiety
Interventions
Not listed
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 11, 2019 · Synced Jul 23, 2026, 8:15 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Fear Conditioning Using Computer-Generated Virtual Reality

NCT00025844
View directory record Official record
Conditions
Anxiety Disorder
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
7 Years to 50 Years
Enrollment
202 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2012
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 23, 2026, 8:15 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Functional Neuroanatomy of Emotion Perception, Recognition, Learning, and Memory

NCT00458432
View directory record Official record
Conditions
Healthy
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
20 Years to 40 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 23, 2026, 8:15 AM EDT
Terminated No phase listed Observational

Social Anxiety Virtual Reality Study

NCT04288180
View directory record Official record
Conditions
Social Anxiety Disorder
Interventions
No intervention
Other
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Oct 7, 2021 · Synced Jul 23, 2026, 8:15 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cerebral GABA and Fear Conditioning in PTSD

NCT01800383
View directory record Official record
Conditions
Stress Disorders, Post-Traumatic
Interventions
Not listed
Lead sponsor
Isabelle Rosso
Other
Eligibility
20 Years to 50 Years
Enrollment
126 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2022
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 3, 2023 · Synced Jul 23, 2026, 8:15 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Human Behaviors Related to the Expectation of Pain

NCT03739645
View directory record Official record
Conditions
Fear Pain
Interventions
Skin conductance levels and slopes over time in conditioned fear as metrics.as metrics for anxiety
Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
16 Years to 88 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 24, 2025 · Synced Jul 23, 2026, 8:15 AM EDT
Not yet recruiting Phase 4 Interventional

The Effects of Orexin Antagonism on Fear Extinction in PTSD

NCT06788522
View directory record Official record
Conditions
Insomnia, PTSD
Interventions
Suvorexant, Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 75 Years
Enrollment
40,120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2032
U.S. locations
2
States / cities
San Francisco, California • Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Jul 23, 2026, 8:15 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Could Meditation Modulate the Neurobiology of Learning Not to Fear?

NCT01320969
View directory record Official record
Conditions
Healthy Individuals, Highly Stressed
Interventions
Mindfulness-Based Stress Reduction course
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
85 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Charlestown, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 6, 2012 · Synced Jul 23, 2026, 8:15 AM EDT
Completed Not applicable Interventional Results available

Effect of tDCS Timing on Safety Memory in PTSD

NCT04152772
View directory record Official record
Conditions
PTSD
Interventions
transcranial direct current stimulation
Device
Lead sponsor
Butler Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Oct 20, 2025 · Synced Jul 23, 2026, 8:15 AM EDT
Recruiting Not applicable Interventional

Using Exercise to Enhance Fear Extinction Learning

NCT07548125
View directory record Official record
Conditions
PTSD, Exercise Intensity, Fear Extinction, Fear Conditioning
Interventions
Exercise
Behavioral
Lead sponsor
Josh Cisler
Other
Eligibility
18 Years to 55 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Apr 22, 2026 · Synced Jul 23, 2026, 8:15 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Cannabinoid Augmentation of Fear Response in Humans

NCT01665573
View directory record Official record
Conditions
Fear Conditioning
Interventions
PF-04457845, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 10, 2022 · Synced Jul 23, 2026, 8:15 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effect of D-cycloserine on Extinction of Fear Conditioning

NCT00352586
View directory record Official record
Conditions
Fear
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 50 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2008
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 23, 2026, 8:15 AM EDT
Completed Early Phase 1 Interventional

Effects of Duloxetine on Fear Conditioning in Posttraumatic Stress Disorder (PTSD)

NCT00763178
View directory record Official record
Conditions
Posttraumatic Stress Disorder
Interventions
Duloxetine
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 65 Years · Male only
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 22, 2015 · Synced Jul 23, 2026, 8:15 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Effects of D-cycloserine on Stimulus Generalization of Conditioned Fear Healthy Controls.

NCT01733030
View directory record Official record
Conditions
Post Traumatic Stress Syndrome
Interventions
Seromycin
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 55 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 3, 2017 · Synced Jul 23, 2026, 8:15 AM EDT
Completed Not applicable Interventional Results available

Cortisol Suppression and Startle Responses in Posttraumatic Stress Disorder (PTSD)

NCT01477762
View directory record Official record
Conditions
Post Traumatic Stress Disorder
Interventions
Dexamethasone, Placebo
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years to 65 Years
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 17, 2017 · Synced Jul 23, 2026, 8:15 AM EDT
Not listed Not applicable Interventional

Neuroimaging of Pavlovian Fear Conditioning Processes in Patients With Pathological Anxiety

NCT03498599
View directory record Official record
Conditions
Post Traumatic Stress Disorder, Anxiety Disorders, Panic Disorder, Social Phobia, Phobia
Interventions
Novelty facilitated extinction, Standard Extinction
Behavioral
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years to 50 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Apr 12, 2018 · Synced Jul 23, 2026, 8:15 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Spatial Context and Fear Learning

NCT02423044
View directory record Official record
Conditions
Anxiety Disorders
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 50 Years
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 3, 2019 · Synced Jul 23, 2026, 8:15 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Use Electroencephalogram to Study Neural Dynamics of Fear Conditioning and Avoidance Learning Circuit in Humans

NCT06240052
View directory record Official record
Conditions
Neural Dynamics of the Acquisition and Retention of Fear Learning and Active Avoidance Learning
Interventions
Conditioning and active avoidance paradigm (CAAP)
Behavioral
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 70 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 4, 2025 · Synced Jul 23, 2026, 8:15 AM EDT
Completed Not applicable Interventional

Transcranial Direct Current Stimulation Potentiation of Fear Extinction in OCD

NCT05521074
View directory record Official record
Conditions
Obsessive-Compulsive Disorder
Interventions
Active tDCS, Sham tDCS
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 60 Years
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 8, 2025 · Synced Jul 23, 2026, 8:15 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Arousal and Stress in Anxiety

NCT00026559
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Shock Device, Auditory Startle Device
Device
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 50 Years
Enrollment
1,418 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2022
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 8, 2024 · Synced Jul 23, 2026, 8:15 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Neurobiology of Generalized Fear-Conditioning & Avoidance in Anxiety Disorders

NCT03033056
View directory record Official record
Conditions
Anxiety Disorders
Interventions
Test of fear conditioning
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 60 Years
Enrollment
208 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 9, 2022 · Synced Jul 23, 2026, 8:15 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Brain Structure and Function Before and After Treatment for Post-Traumatic Stress Disorder

NCT00069225
View directory record Official record
Conditions
Stress Disorders, Post-Traumatic
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
Not listed
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jul 23, 2026, 8:15 AM EDT