Electroencephalography Markers of Brain Stimulation in Post-Concussion Patients

In this randomized, sham-controlled, two-group, parallel, single-session study, the investigators aim to identify EEG biomarkers associated with cerebellar transcranial direct current stimulation (tDCS) in patients with persistent post-concussion symptoms (PPCS). Cerebellar tDCS will be used to modulate brain network connectivity, which is known to be altered in PPCS. The study will include 38 participants, each completing a single session including EEG recordings before and after stimulation. Participants will be randomly assigned to one of two conditions: 1) active cerebellar tDCS, or 2) sham stimulation.By focusing on EEG functional connectivity and related signal metrics, this study aims to better understand the neural mechanisms of cerebellar tDCS and support the development of targeted interventions for patients with PPCS.