Clinical Research Directory

Inclusion Criteria: * Age 12 to 16 years, inclusive, at the time of enrollment. * Regular participation in vocal music training for at least 12 months. * Ability to safely perform the standardized vocal piece selected for the study. * General health status compatible with participation, confirmed through a pre-session safety screening. * No known neurological or clinical condition considered to increase the risk associated with stimulation. * No current use of medication or substances considered by the study team to substantially alter cortical excitability or increase procedural risk. * Written informed consent from a legal guardian. * Written assent from the adolescent and voluntary willingness to participate. Exclusion Criteria: * History of epilepsy or non-febrile seizures. * Relevant brain injury, previous cranial surgery, or other neurological condition considered incompatible with the protocol. * Pacemaker, implanted electronic device, neurostimulator, or cranial metallic implant that could pose a risk or interfere with stimulation. * Current use of anticonvulsant medication or other medication considered by the study team to represent a contraindication or unacceptable precaution. * Previous experience with tDCS when such experience could compromise blinding. * Dermatitis, wounds, infection, burns, significant pain, or other scalp abnormalities at the planned electrode sites. * Known or suspected pregnancy, as a precaution; pregnancy testing will not be performed as part of the study. * Acute illness or relevant symptoms on the day of the session, including fever, significant headache, persistent dizziness, relevant sleep deprivation, or acute upper respiratory symptoms when these findings justify postponement or exclusion for safety or performance-related reasons.