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The neurobiological underpinnings of obesity point to brain asymmetry in cortical and deeper brain regions. Furthermore, chemical, structural and functional imbalance in cortical and sub-cortical brain regions alters reward processing, attentional control and self-regulation in food-addicted obese individuals. In this study the investigators use TMS with a special multichannel H-coil developed by their lab to safely stimulate cortical and deeper brain regions in obese humans. The investigators aim to produce interhemispheric neuroplasticity (INP) using a paired associative stimulation (PAS) protocol over the DLPFC, to restore neurobiological functioning, alleviate food addiction symptoms, and promote weight loss.
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Inclusion criteria
Exclusion criteria
The participant experiences tremor in any limb.
The participant experiences seizures.
The participant has a history of epilepsy or seizure (EXCEPT those therapeutically induced by ECT), or a history of such in first degree relatives.
The participant is at increased risk for seizures for any reason, including prior diagnosis of increased intracranial pressure (such as after large infarctions or trauma), or a history of significant head trauma with loss of consciousness for > 5 minutes.
The participant has a history of head injury.
The participant suffers from an unstable physical disease, such as high blood pressure (>150 mmHg systolic / diastolic > 110 mmHg) or acute, unstable cardiac disease The participant is at a high risk for severe violence or suicidal tendencies, assessed during the screening interview (see appendix 4).
The participant has metallic particles in the eye, implanted cardiac pacemaker or any intracardiac lines, implanted neuro-stimulators, intracranial implant (e.g., aneurysm clips, shunts, stimulators, cochlear implants, or electrodes) or implanted medical pumps.
The participant is having, or has had, any metal in the head (outside the mouth).
The participant suffers from a significant neurological disorder or insult including, but not limited to:
The participant has any cognitive or functional disability, according to criteria specified in the DSM-V, such as active psychiatric disorder according to the Diagnostic and Statistical Manual of Mental Disorders 5th edition (DSM-V; Axis I and Axis II) diagnosed within the last year.
The participant has started or changed a psychotropic prescription within the last three months.
The participant has current alcohol or other substance abuse or dependence, or has had one over the last 12 months prior to recruitment.
The participant can't reliably communicate with the investigator, or is unlikely to cope with the requirements of the experiment.
The participant is having a known or suspected pregnancy or lactation.
The participant is a sexually-active woman of childbearing age, who does not use a medically accepted form of contraception.
The motor threshold can't be found or quantified.
The PI decides that the participant should be withdrawn from the study for the safety and welfare of the participant. For example, the participant experiences adverse event which is contraindicated with the continuation in the study.
A history of intolerance to a TMS treatment.
The participant asks for withdrawal
Primary purpose
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Interventional model
Masking
60 participants in 3 patient groups
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Central trial contact
Roni Aviram-Friedman, PhD
Data sourced from clinicaltrials.gov
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