Cílení na rozsáhlé sítě v depresi pomocí neurofeedbacku pomocí funkční magnetické rezonance (fMRI) v reálném čase
Cílení na rozsáhlé sítě v depresi s fMRI Neurofeedback v reálném čase
The purpose of this study is to develop a technique called real time fMRI neurofeedback.
This technique uses a regular MRI scanner, except that special software allows the researchers to measure activity in participants brain, using fMRI, and then give information, in the form of a feedback signal, which indicates brain activity in real time, while in the MRI scanner. The larger goal of this study is to develop ways to help people, including those with depression, better regulate brain activity. The researchers think that this may be helpful in managing psychiatric symptoms.
This study design has three phases, however, only two phases (phase 2 and 3) are considered to be a clinical trial. Phase 2 (part 2) was registered and is NCT05934604. This is the phase 3 (part 3) for this project and is funded by the National Institutes of Health.
Přehled studie
Postavení
Podmínky
Intervence / Léčba
Detailní popis
Part 3/Phase 3 study hypothesis are:
- Rest Focus Task (RFT) will activate brain networks at the individual subject level to provide a viable signal for Neurofeedback (NF)
- At the group level, RFT in the Active>Passive contrast will activate canonically defined salience network
- Neurofeedback-reinforced practice over the session will increase RFT activation over the course of the training session, comparing RFT activation, without NF, before and after NF runs.
- Valid Neurofeedback will increase RFT activation more compared to sham NF (assessed during the no-NF session).
Typ studie
Zápis (Aktuální)
Fáze
- Nelze použít
Kontakty a umístění
Studijní místa
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Michigan
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Ann Arbor, Michigan, Spojené státy, 48109
- University of Michigan
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Kritéria účasti
Kritéria způsobilosti
Věk způsobilý ke studiu
Přijímá zdravé dobrovolníky
Pohlaví způsobilá ke studiu
Popis
Inclusion Criteria:
- Meets The Diagnostic and Statistical Manual of Mental Disorders five (DSM5) criteria for Major Depressive Disorder, single or recurrent, active or in partial remission
- Patient Health Questionnaire (PHQ9) greater or equal (≥)6, and approximately (~) 50% with PHQ9≥10
- If participants are taking antidepressant medications, on stable dosage for 4 weeks
- No history of active substance use disorder in the past 6 months
- Absence of suicidal thoughts with plans or intentions, as assessed by Columbia Suicide Severity Rating Scale (C-SSRS)
- If a woman of child-bearing age, not pregnant or trying to become pregnant
- Ability to tolerate small, enclosed spaces without anxiety
- No metals, implants or metallic substances within or on the body that might cause adverse effects to the subject in a strong magnetic field, or interfere with image acquisition, e. g. aneurysm clips, retained particles (for example metal workers with exposures, protocol has more details), etc.
- Size compatible with scanner gantry (per protocol)
- Ability and willingness to give informed consent to participate.
Exclusion Criteria:
- Size not compatible with scanner
- Not meeting diagnostic criteria for bipolar disorder, schizophrenia, other psychosis, obsessive-compulsive disorder, active eating disorder or Post-traumatic stress disorder (PTSD)
- No history of serious neurological illness (including, but not limited to, seizures/epilepsy) or current medical condition that could compromise brain function, such as liver failure
- No history of closed head injury, e. g. loss of consciousness > ~5 min, hospitalization, neurological sequela
Studijní plán
Jak je studie koncipována?
Detaily designu
- Primární účel: Základní věda
- Přidělení: Randomizované
- Intervenční model: Paralelní přiřazení
- Maskování: Dvojnásobek
Zbraně a zásahy
Skupina účastníků / Arm |
Intervence / Léčba |
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Falešný srovnávač: Sham controlled feedback
Subjects will complete three visits with one or two fMRI sessions after initial assessment and training visit. The first session will be to introduce practice tasks using the mock scanner. In the second visit participants will have an fMRI. The study team will review the fMRI results to decide if participants will continue on the study (must exhibit a specific pattern of activation) and have the second fMRI at the third visit. |
During the second fMRI, the study will introduce the real time fMRI neurofeedback part of the study. This is where subjects will use the activity from the brain to control the size of the circular pattern viewed in the first two visits. This is real time fMRI because the pattern will change, in real time, based on what the fMRI scan measures in the brain. Participants will be encouraged to make the circular pattern grow in size, just by thinking about it. In order to see if the neurofeedback is really helping change the size of the circular pattern, the study team will have a control condition. In this controlled condition, subjects will see the circular pattern change, and the study team will ask participants to try and increase the size, except that the changing size will not actually be determined by your brain activity. This a called a sham condition because the feedback signal is not real. |
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Experimentální: Real-time neurofeedback
Subjects will complete three visits with one or two fMRI sessions after initial assessment and training visit. The first session will be to introduce practice tasks using the mock scanner. In the second visit participants will have an fMRI. The study team will review the fMRI results to decide if participants will continue on the study (must exhibit a specific pattern of activation) and have the second fMRI at the third visit. |
During the second fMRI, the study will introduce the real time fMRI neurofeedback part of the study. This is where subjects will use the activity from the brain to control the size of the circular pattern viewed in the first two visits. This is real time fMRI because the pattern will change, in real time, based on what the fMRI scan measures in the brain. Participants will be encouraged to make the circular pattern grow in size, just by thinking about it. |
Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
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Blood Oxygen Level Dependent (BOLD) signal change during the active > passive contrast during the localizer session
Časové okno: Approximately 40 minutes (during MRI)
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Using standard pre-processing pipelines, the general linear model, convolved with the hemodynamic response function, will be used to predict change in BOLD signal for the contrast of the active compared to the passive conditions. Z-transformed t-statistics will be corrected for multiple comparisons in the region of interest (salience network) |
Approximately 40 minutes (during MRI)
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BOLD signal change during the active>passive contrast, comparing baseline with transfer runs (no NF in either), during the real time functional magnetic resonance imaging neurofeedback (rtfMRI-NF) session
Časové okno: Approximately 40 minutes (during MRI)
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Same processing as outcome measure 2, except the contrast of active>passive will itself be contrasted within the session (baseline compared to transfer run) |
Approximately 40 minutes (during MRI)
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Spolupracovníci a vyšetřovatelé
Sponzor
Spolupracovníci
Vyšetřovatelé
- Vrchní vyšetřovatel: Stephan Taylor, MD, University of Michigan
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia (Aktuální)
Primární dokončení (Aktuální)
Dokončení studie (Aktuální)
Termíny zápisu do studia
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Aktuální)
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Aktuální)
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Více informací
Termíny související s touto studií
Klíčová slova
Další relevantní podmínky MeSH
Další identifikační čísla studie
- HUM00228741 phase 3
- 1R21MH134035-01 (Grant/smlouva NIH USA)
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Plánujete sdílet data jednotlivých účastníků (IPD)?
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