Fear Conditioning Using Computer-Generated Virtual Reality

This study has been completed.
Sponsor:
Information provided by:
National Institutes of Health Clinical Center (CC)
ClinicalTrials.gov Identifier:
NCT00025844
First received: October 26, 2001
Last updated: April 11, 2012
Last verified: April 2012
  Purpose

The purpose of this study is to use a computer-generated virtual reality environment to study fear conditioning. Fear conditioning is used to explore the causes and persistence of anxiety and anxiety disorders.

When confronted with fearful or unpleasant events, people can develop fear of specific cues that were associated with these events as well as to the environmental context in which the events occurred via a process called classical or aversive conditioning. Advances in computer-generated visual stimulations could facilitate the design of new aversive conditioning studies. This study will develop a virtual reality environment to examine human contextual fear conditioning in the laboratory. During the procedure, moderately painful stimuli will be administered. Participants in this study will be screened with a medical history, physical examination, psychiatric evaluation, and hearing test. Participants will wear headphones and special goggles that will enable them to view a virtual reality environment. Measures will be taken during the study to see how the brain adapts to environmental stimuli.


Condition
Anxiety Disorder

Study Type: Observational
Official Title: Fear Conditioning Using Computer-Generated Virtual Reality

Resource links provided by NLM:


Further study details as provided by National Institutes of Health Clinical Center (CC):

Enrollment: 202
Study Start Date: October 2001
Estimated Study Completion Date: April 2012
Detailed Description:

Fear conditioning paradigms are tools to explore symptoms of anxiety disorders. During fear conditioning, the organism develops fear to the phasic explicit cue (e.g., a light) that was associated with the aversive unconditioned stimulus (e.g., a shock) during conditioning as well as to the environmental context (e.g., the experimental room). Explicit cue conditioning and context conditioning are separate processes mediated by distinct brain structures. Whereas explicit cue conditioning is only dependent on the amygdala, context conditioning involves the amygdala, the hippocampus and the bed nucleus of the stria terminalis (BNST). We have been using explicit cue and context conditioning as models of phasic fear and sustained anxiety, respectively. However, contextual fear is relatively difficult to study in humans in the laboratory because it requires two experimental sessions and the use of different experimental rooms. Advances in computer-generated visual stimulation now offer the possibility to develop more sophisticated paradigms in the laboratory that could facilitate the design of fear conditioning studies. In addition, compared to traditional paradigms, computer generated three-dimensional stimulation provides the opportunity to create more realistic virtual environment. The main objective of this study is to use virtual reality to further our understanding of fear conditioning in humans.

  Eligibility

Ages Eligible for Study:   7 Years to 50 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria
  • INCLUSION CRITERIA:

Subjects will be healthy volunteers ages 7-50 recruited through advertisements in the local media.

Subjects will be free of current or past psychotic disorder and organic central nervous system disorders.

All children will be screened for lifetime history of psychiatric disorders using the K-SADS Interview. The interview will be administered by a trained clinician (at least master level) supervised by Dr. Pine.

The children/adolescents will be able to give assent and parents will give consent.

They will have an IQ greater than 70 based on WASI.

EXCLUSION CRITERIA:

Ongoing medical illness that could interfere with the study

Current psychiatric or neurological disorder (including seizure)

Past psychotic disorder

Current substance abuse

Current psychotropic medication

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00025844

Locations
United States, Maryland
National Institutes of Health Clinical Center, 9000 Rockville Pike
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
Investigators
Principal Investigator: Thomas C Quinn, M.D. National Institute of Allergy and Infectious Diseases (NIAID)
  More Information

Publications:
ClinicalTrials.gov Identifier: NCT00025844     History of Changes
Other Study ID Numbers: 020003, 02-M-0003
Study First Received: October 26, 2001
Last Updated: April 11, 2012
Health Authority: United States: Federal Government

Keywords provided by National Institutes of Health Clinical Center (CC):
Stress
Anxiety
Adults
Fear Conditioning
Normal Volunteers
Associative Learning
Virtual Reality
Context Conditioning
Healthy Volunteer
HV
Normal Control

Additional relevant MeSH terms:
Anxiety Disorders
Mental Disorders

ClinicalTrials.gov processed this record on August 28, 2014