PainNCT01242540
Brain Activation During Accommodation to Painful Stimulation With FMRI
An observational study of Pain, run by University of Pittsburgh at 1 site in United States.
Trial summary
Blood oxygen level dependant (BOLD) functional magnetic resonance imaging (FMRI) investigations of pain have provided substantial insight into the workings of the human brain. To date, however, the vast majority of studies have dealt with short painful stimulations. Read more about this study
- Who is it for?
- Ages 18 to 50 yearsHealthy volunteers can take part
- Conditions the study is for
- Pain
- How many people
- 15 participants
- Where
- 1 siteUnited States
- Study dates
- Nov 2010to Oct 2016
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 50 years
- All sexes
- Healthy volunteers accepted
- Adult
Study population: Subjects will come from the general surrounding community.
Who may be able to join
- Age 18 to 50
- Right-handed
- Male or female
- Healthy individuals not taking any medication.
Who cannot join
- Pregnancy
- Diagnosed with any treated or untreated medical or neurological conditions
- Using any prescription drugs, including antidepressants, pain medications, sedative medications, blood pressure medications, seizure medications, or antipsychotics. Oral contraceptives are permitted
- Using any over-the-counter medications including aspirin, Tylenol, or herbal supplements
- Using any illicit substances
- Contraindications to magnetic resonance imaging.
Trial locations and contacts
1 site in 1 country.
United States1 site
University of Pittsburgh
Pittsburgh, Pennsylvania, 15213
About this study
Official title: Brain Activation During Accommodation to Painful Stimulation With Functional Imaging of Pain
Blood oxygen level dependant (BOLD) functional magnetic resonance imaging (FMRI) investigations of pain have provided substantial insight into the workings of the human brain. To date, however, the vast majority of studies have dealt with short painful stimulations. This work will expand the investigators knowledge of how longer stimulations are processed by comparing the activation pattern from a two minute painful stimulation with that of an 30-second painful stimulus. The investigators hypothesis that accommodation to the longer stimulation will be evident by either decreases in signal intensity in brain areas known to process pain, or by increasing activity in brain areas thought to be responsible for the modulation of painful perception.
Read the detailed description
Background: Over the past 14 years, BOLD FMRI studies have non-invasively shown that pain activates a matrix of areas, but that this activation decays during stimulation, possibly reflecting the body's ability to "accommodate" to the stimulation. The majority of these use short applications of pain lasting 1 to 30 seconds. However, investigators are now using stimulations much longer than the periods that were typical a few years ago. The effect of signal decay on the activation maps generated by these longer tasks is not known. Because the signal change in many of the subcortical areas involved in pain processing is low, errors in analysis due to neglecting the signal decay may induce significant artifact.
Materials and Methods: Using transcutaneous electrical nerve stimulation, 20 healthy volunteers will experience two different painful stimulations: a repeating 30-second long stimulation and a constant 2 minute stimulation. The brain activity for each will be determined and compared. In addition, the signal decay during each painful stimulation will be quantified and compared.
Significance: Investigators are using longer stimulations periods in an attempt to understand how the brain processes "real- life" pain instead of the artificial on-off pattern of earlier studies. However, significant attention has not been paid to the possible effect of accommodation on the stimulus and how this may impact the activity pattern found. In addition, proof of activation of pain-control areas like the periaquaductal gray while inverse changes are occurring in pain-perceiving areas has not been sought. This study will address both of these issues with a single BOLD FMRI experiment.
- Conditions
- Pain
- Keywords
- Pain, Functional Magnetic Resonance Imaging
- Medical subject headings
- Pain
What is being measured
The primary outcome is the main question the study is designed to answer.
To determine the areas of brain activity from a 2 minute long painful stimulation
Measured: After a 2 minute long painful stimulation
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted17 Nov 2010 (estimated)
- Study startNov 2010
- Primary completionJun 2011
- Study completionOct 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (4)Papers the sponsor has linked to this study.
- Other trials for PainStudies of the same condition, open and under way.
- More trials run by University of PittsburghThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case only
- Time perspective
- Cross-sectional
- Enrolment
- 15 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Pittsburgh
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Jim Ibinson, University of Pittsburgh
- Investigators
- James W Ibinson, MD, PhD, Principal investigator, University of Pittsburgh
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01242540
- Sponsor's protocol ID
- PRO10020252
- Status last verified
- Jun 2017
- First submitted
- 15 Nov 2010
- Last updated
- 26 Jun 2017
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Ibinson JW, Small RH, Algaze A, Roberts CJ, Clark DL, Schmalbrock P. Functional magnetic resonance imaging studies of pain: an investigation of signal decay during and across sessions. Anesthesiology. 2004 Oct;101(4):960-9. doi: 10.1097/00000542-200410000-00022.
PubMed 15448530Peyron R, Laurent B, Garcia-Larrea L. Functional imaging of brain responses to pain. A review and meta-analysis (2000). Neurophysiol Clin. 2000 Oct;30(5):263-88. doi: 10.1016/s0987-7053(00)00227-6.
PubMed 11126640Tracey I, Ploghaus A, Gati JS, Clare S, Smith S, Menon RS, Matthews PM. Imaging attentional modulation of pain in the periaqueductal gray in humans. J Neurosci. 2002 Apr 1;22(7):2748-52. doi: 10.1523/JNEUROSCI.22-07-02748.2002.
PubMed 11923440Seifert F, Bschorer K, De Col R, Filitz J, Peltz E, Koppert W, Maihofner C. Medial prefrontal cortex activity is predictive for hyperalgesia and pharmacological antihyperalgesia. J Neurosci. 2009 May 13;29(19):6167-75. doi: 10.1523/JNEUROSCI.4654-08.2009.
PubMed 19439594
Study at a glance
From the registry record, last updated by the sponsor on 26 Jun 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Brain Activation During Accommodation to Painful Stimulation With Functional Imaging of Pain
- ClinicalTrials.gov ID
- NCT01242540
- Acronym / sponsor ID
- PRO10020252
- Conditions
- Pain
- Keywords
- Pain, Functional Magnetic Resonance Imaging
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 15 participants (actual)
- Lead sponsor
- University of PittsburghUniversity, hospital or other
- Study start
- Nov 2010
- Primary completion
- Jun 2011 (actual)
- Study completion
- Oct 2016 (actual)
- First posted
- 17 Nov 2010 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Blood oxygen level dependant (BOLD) functional magnetic resonance imaging (FMRI) investigations of pain have provided substantial insight into the workings of the human brain. To date, however, the vast majority of studies have dealt with short painful stimulations. This work will expand the investigators knowledge of how longer stimulations are processed by comparing the activation pattern from a two minute painful stimulation with that of an 30-second painful stimulus. The investigators hypothesis that accommodation to the longer stimulation will be evident by either decreases in signal intensity in brain areas known to process pain, or by increasing activity in brain areas thought to be responsible for the modulation of painful perception.
Detailed description
Background: Over the past 14 years, BOLD FMRI studies have non-invasively shown that pain activates a matrix of areas, but that this activation decays during stimulation, possibly reflecting the body's ability to "accommodate" to the stimulation. The majority of these use short applications of pain lasting 1 to 30 seconds. However, investigators are now using stimulations much longer than the periods that were typical a few years ago. The effect of signal decay on the activation maps generated by these longer tasks is not known. Because the signal change in many of the subcortical areas involved in pain processing is low, errors in analysis due to neglecting the signal decay may induce significant artifact.
Materials and Methods: Using transcutaneous electrical nerve stimulation, 20 healthy volunteers will experience two different painful stimulations: a repeating 30-second long stimulation and a constant 2 minute stimulation. The brain activity for each will be determined and compared. In addition, the signal decay during each painful stimulation will be quantified and compared.
Significance: Investigators are using longer stimulations periods in an attempt to understand how the brain processes "real- life" pain instead of the artificial on-off pattern of earlier studies. However, significant attention has not been paid to the possible effect of accommodation on the stimulus and how this may impact the activity pattern found. In addition, proof of activation of pain-control areas like the periaquaductal gray while inverse changes are occurring in pain-perceiving areas has not been sought. This study will address both of these issues with a single BOLD FMRI experiment.
Study design
- Observational model
- Case only
- Time perspective
- Cross-sectional
Who may qualify
- Ages
- 18 to 50 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
- Study population
- Subjects will come from the general surrounding community.
Key inclusion criteria (4 listed)
- Age 18 to 50
- Right-handed
- Male or female
- Healthy individuals not taking any medication.
Key exclusion criteria (6 listed)
- Pregnancy
- Diagnosed with any treated or untreated medical or neurological conditions
- Using any prescription drugs, including antidepressants, pain medications, sedative medications, blood pressure medications, seizure medications, or antipsychotics. Oral contraceptives are permitted
- Using any over-the-counter medications including aspirin, Tylenol, or herbal supplements
- Using any illicit substances
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
To determine the areas of brain activity from a 2 minute long painful stimulation
Time frame: After a 2 minute long painful stimulation
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 26 Jun 2017.
- Background: PubMed 15448530Ibinson JW, Small RH, Algaze A, Roberts CJ, Clark DL, Schmalbrock P. Functional magnetic resonance imaging studies of pain: an investigation of signal decay during and across sessions. Anesthesiology. 2004 Oct;101(4):960-9. doi: 10.1097/00000542-200410000-00022.
- Background: PubMed 11126640Peyron R, Laurent B, Garcia-Larrea L. Functional imaging of brain responses to pain. A review and meta-analysis (2000). Neurophysiol Clin. 2000 Oct;30(5):263-88. doi: 10.1016/s0987-7053(00)00227-6.
- Background: PubMed 11923440Tracey I, Ploghaus A, Gati JS, Clare S, Smith S, Menon RS, Matthews PM. Imaging attentional modulation of pain in the periaqueductal gray in humans. J Neurosci. 2002 Apr 1;22(7):2748-52. doi: 10.1523/JNEUROSCI.22-07-02748.2002.
- Background: PubMed 19439594Seifert F, Bschorer K, De Col R, Filitz J, Peltz E, Koppert W, Maihofner C. Medial prefrontal cortex activity is predictive for hyperalgesia and pharmacological antihyperalgesia. J Neurosci. 2009 May 13;29(19):6167-75. doi: 10.1523/JNEUROSCI.4654-08.2009.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
James W Ibinson, MD, PhD principal investigator
University of Pittsburgh
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Pain, run by University of Pittsburgh at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 26 Jun 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
To determine the areas of brain activity from a 2 minute long painful stimulation (time frame: After a 2 minute long painful stimulation). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01242540, which also lists 4 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Jun 2017.