Network Effects of Left M1 rTMS: A TMS-EEG Study
Effects of Left Primary Motor Cortex rTMS on Cortical Connectivity Assessed With TMS-EEG Across Left M1, Right M1, Premotor, and Occipital Cortices
Aalborg University
20 participants
May 1, 2026
INTERVENTIONAL
Conditions
Summary
This study investigates the modification of connectivity patterns in response to one session of active repetitive transcranial magnetic stimulation (rTMS) applied to the primary motor cortex. Transcranial magnetic stimulation (TMS) will be applied to elicit electroencephalography (EEG) responses in healthy volunteers. TMS-evoked potentials (TEPs) will be recorded before and after the rTMS session and will serve as a reflection of cortical connectivity to TMS. Four cortical targets will be stimulated for TMS-EEG assessment: left primary motor cortex, right primary motor cortex, left premotor cortex, and right occipital cortex.
Eligibility
Inclusion Criteria2
- Healthy men and women
- Speak and understand English
Exclusion Criteria6
- Drug addiction defined as the use of cannabis, opioids or other drugs
- Previous neurologic, musculoskeletal or mental illnesses
- Lack of ability to cooperate
- History of chronic pain or current acute pain
- Contraindications to rTMS application (history of epilepsy, metal in the head or jaw etc.).
- Failure to pass the "TASS questionnaire" (TASS = Transcranial Magnetic Stimulation Adult Safety Screen)
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Interventions
Repetitive transcranial magnetic stimulation (rTMS) is applied to the primary motor cortex. The protocol consists of 15 minutes of 10Hz stimulation, 10 seconds on, 20 seconds off, at 90% RMT, for a total of 3000 pulses.
Locations(1)
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NCT07580989