Intervention for Intrusive Negative Thinking
Graduated Sensory Salience as an Intervention for Intrusive Negative Thinking
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Detailed Description
Study Type
Study Type
Enrollment (Actual)
Enrollment
Phase
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Pennsylvania
-
Pittsburgh, Pennsylvania, United States, 15213
- Oxford Building
-
-
Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria for all participants:
- Signed study consent document
- Native English speakers (learned English before age 5)
- Right handed
- 20/30 vision or better
- Free from benzodiazepines and betablockers within 8 hours of evaluations
Subject specific Inclusion Criteria
- Endorsement of chronic and intrusive negative thinking
- High scores on rumination; Response Style Questionnaire (RSQ >= 44)
- Automatic Negative Thoughts Questionnaire (ATQ >= 48)
- Dysphoria; Quick Inventory of Depressive Symptomatology (QIDS>= 8)
- Must be in current treatment (either Intensive Outpatient Therapy, regular therapy sessions with a licensed provider, or close care by a psychiatrist). This is to ensure the research team is not the patient's only care provider, as this intervention is intended to be adjunct with therapy.
Exclusion Criteria:
- Refusal or inability to provide informed consent
- Current alcohol or substance dependence
- Psychotic disorders or psychosis
- Neurological disorders (stroke, Alzheimer's, Parkinson's, epilepsy, etc.)
- Inability to complete questionnaires in English. The justification is that many of the primary analyses involve assessment of change in self-reported symptoms using measures normed in English. Participants must thus be able to read those measures to give valid indications of the extent to which they have responded to the intervention.
- Current use of any psychotropic drugs thought to affect learning, including antipsychotics, anticonvulsants, stimulants, and anti-Parkinsonian drugs. Current is defined as within 2 weeks of testing, 4 weeks for fluoxetine.
- Chronic pain that could be exacerbated by transcutaneous electrical stimulation
- Having any eye problems or difficulties in corrected vision or hearing
- Having a North American Adult Reading Test (NAART) equivalent Full Scale Intelligence Quotient < 85
- Being pregnant. Determined by self-report at the interview and by a pregnancy test
- Severe or poorly controlled concurrent medical disorders that may cause thinking disruptions or require medication that could cause negative thinking
- Current use of medications that could cause affect thinking symptoms. That is, participants need to be able to think clearly to complete the proposed information processing tasks. And they need to be able to learn to be able to make use of the intervention. Medications which compromise clear thinking or which block learning will thus be considered exclusion criteria.
- Any implanted electrical device (pacemaker, vagus nerve stimulator implant, etc.) or prior treatment with a vagus nerve stimulator
- Underwent electroconvulsive therapy (ECT) < 9 months prior to study entry.
- People who have foreign objects in their body that are not cleared for safety at 3 Tesla scanning, such as aneurysm clips or pacemakers, will be excluded from the fMRI portion of the study.
- Participants deemed "not a good fit" for the study for other reasons (such as, but not limited to, continually arriving late or rescheduling, not being a trustworthy historian or accurate reporter of symptoms, being belligerent with study staff, or presenting an active suicide risk) can also be excluded.
- Any heart condition
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Single Group Assignment
- Masking: Single
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
|---|---|
|
Experimental: Graded sensory attention training
Sensory stimuli will begin at a maximal tolerable intensity and decrease in intensity throughout the training, to shift from involuntary to voluntary attentional focus.
|
Participants will be instructed to attend to sensory stimuli and to press a button as quickly and accurately as possible while ruminating.
Stimuli will consist of vibration via a wearable subwoofer or non-painful electrical muscle stimulation (10Hz biphasic current with a pulse width of 200us with rectangular 2" electrodes placed on the back near the shoulders) or vibratory stimulation with a vibroacoustic element placed on the back near the shoulders.
Up to four sessions will be approximately 45 minutes, over the course of two weeks.
|
|
Active Comparator: Non-graded sensory attention training
Sensory stimuli will begin and be maintained at a minimal detectable intensity to maximize voluntary attentional training.
|
Participants will be instructed to attend to sensory stimuli and to press a button as quickly and accurately as possible while ruminating.
Stimuli will consist of vibration via a wearable subwoofer or non-painful electrical muscle stimulation (10Hz biphasic current with a pulse width of 200us with rectangular 2" electrodes placed on the back near the shoulders) or vibratory stimulation with a vibroacoustic element placed on the back near the shoulders.
Up to four sessions will be approximately 45 minutes, over the course of two weeks.
|
What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Sustained attention composite (computer based tasks and physiological measures)
Time Frame: two weeks (five intervention days)
|
Sustained attention is operationalized by performance on computer-based tasks (sensitivity, reaction times) and associated physiological measures (pupil dilation, eye movements, heart rate, EEG) and central measures (fMRI derived reactivity in affect, somatosensory, and attention networks).
These metrics will be interpreted together as a meta-analytic composite by counting the number of component measures with significant change in association with the intervention in comparison to a permutation-test derived critical number of indices change under the null hypothesis given the autocorrelation of the administered measures.
|
two weeks (five intervention days)
|
Secondary Outcome Measures
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Depressive severity (patient self-report)
Time Frame: two weeks (five intervention days)
|
Clinical variables determined by patient self-report.
|
two weeks (five intervention days)
|
|
Rumination (patient self-report)
Time Frame: two weeks (five intervention days)
|
Clinical variables determined by patient self-report.
|
two weeks (five intervention days)
|
Collaborators and Investigators
Sponsor
Sponsor
Collaborators
Collaborators
Investigators
Investigators
- Principal Investigator: Greg J Siegle, Ph.D., University of Pittsburgh
Study record dates
Study Major Dates
Study Start (Actual)
Study Start
Primary Completion (Actual)
Primary Completion
Study Completion (Actual)
Study Completion
Study Registration Dates
First Submitted
First Submitted
First Submitted That Met QC Criteria
First Submitted That Met QC Criteria
First Posted (Estimate)
First Posted
Study Record Updates
Last Update Posted (Actual)
Last Update Posted
Last Update Submitted That Met QC Criteria
Last Update Submitted That Met QC Criteria
Last Verified
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
Other Study ID Numbers
- PRO13040640
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.