TMS-fMRI for Neural Pathway in Smokers
Repetitive TMS Modulates Dorsal Lateral Prefrontal-Ventral Medial Prefrontal Pathway to Decrease Craving in Smokers
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
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South Carolina
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Charleston, South Carolina, Forenede Stater, 29425
- Medical University of South Carolina
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Smoke 10 or more cigarettes per day and have a carbon monoxide (CO) level > 10 ppm indicative of recent smoking.
- Not received substance abuse treatment within the previous 30 days.
- Meet criteria for nicotine dependence as determined by the FTND.
- Be in stable mental and physical health.
- If female, test non-pregnant and use adequate birth control.
- No evidence of focal or diffuse brain lesion on MRI.
- Be willing to provide informed consent.
- Be able to comply with protocol requirements and likely to complete all study procedures.
Exclusion Criteria:
- Current dependence, defined by DSM-V criteria, on any psychoactive substances other than nicotine or caffeine.
- Contraindication to MRI (e.g., presence of metal in the skull, orbits or intracranial cavity, claustrophobia).
- Contraindication to rTMS (history of neurological disorder or seizure, increased intracranial pressure, brain surgery, or head trauma with loss of consciousness for > 15 minutes, implanted electronic device, metal in the head, or pregnancy).
- History of autoimmune, endocrine, viral, or vascular disorder affecting the brain.
- History or MRI evidence of neurological disorder that would lead to local or diffuse brain lesions or significant physical impairment.
- Unstable cardiac disease, uncontrolled hypertension, severe renal or liver insufficiency, or sleep apnea.
- Life time history of major Axis I disorders such as: Bipolar Affective disorder (BPAD), Schizophrenia, Post-traumatic Stress disorder (PTSD) or Dementia or Major Depression.
- Self report of >21 standard alcohol drinks per week in any week in the 30 days prior to screening.
- Other forms of nicotine delivery, such as nicotine patch, electronic cigarettes
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Crossover opgave
- Maskning: Enkelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
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Sham-komparator: Sham rTMS
The sham TMS system will be connected to an electrical generator on a 9 V battery and electrodes will be placed over the prefrontal cortex.
The regulator is triggered by the TMS machine to allow brief, microsecond, pulses of the electrical current through to the skin on the subjects' forehead.
Electrical stimulation will be triggered by the TMS machine to correspond to the sham TMS pulses.
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Andre navne:
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Aktiv komparator: Active rTMS
Stimulation frequency for all active subjects: 10 Hertz - Pulse train duration (on time) 5 seconds, Inter-train interval (off time) 10 seconds (15 second cycle time), Power (intensity) level 100% rMT, Total 60 trains, 15 minutes, Total pulses 3000.
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Andre navne:
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Changes in fMRI Neural Activation Patterns
Tidsramme: 7 days
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During MRI scan in which participants will watch smoking picture, investigators will measure the change in neural activity in reward neural circuit.
Whole brain imaging analysis and network analysis will be performed.
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7 days
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Reduction of Smoking Cue Craving
Tidsramme: pre-TMS and post-TMS approx, 30 minutes.
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visual analog scale for cue craving.
Participants will be asked ' Right now, I would rate the amount of my craving to smoke as:'.
The minimum score is 0, and the Maximum score is 7.
There are 10 items.
The total minimum score is 0, and the total maximum score is 70.
A higher score is more craving to smoke a cigarette.
The fewer values are considered to be a better outcome.
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pre-TMS and post-TMS approx, 30 minutes.
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Publikationer og nyttige links
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- Pro00032649
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