Clinical Research Directory

Inclusion Criteria: * Person aged \> 18 years * Signed informed consent * Healthy * Willingness and ability to adhere to study procedures Exclusion Criteria: * Known hypersensitivity to electric or electromagnetic stimulation * Any implanted metal or electronic device in the upper body (except dental work such as fillings or braces), e.g., active medical devices, metal implants * Neurological or neuromuscular disorders or conditions * History of seizures or epilepsy * Current treatment with drugs that lower seizure threshold (e.g., certain analgesics, methylxanthines, antipsychotics, antidepressants, antiepileptics, anesthetics) * Pregnancy or breastfeeding * Surgical intervention of the arm within the last 4 weeks * Allergy to adhesives or ultrasound gel components (e.g., polyethylene glycols) * Skin lesions, infections, or strictures in the arm region * Tattoos on the stimulated (right) arm and hand, or in any area likely to be captured in video recordings * Inability to follow study procedures (e.g., due to language barrier, psychological disorders, dementia) * Participant deprived of liberty by administrative or judicial decision or under legal guardianship