Targeting Neuroplasticity for Persistent Post-Concussive Cognitive Symptoms: A Trial of tDCS and Cognitive Training 3-12 Months Post-mTBI
University of Minnesota
Summary
This project investigates an innovative combination of non-invasive neuromodulation (transcranial direct current stimulation - tDCS) and cognitive training as a novel treatment approach aimed at improving function in individuals suffering from persistent post-concussive syndrome (PPCS) following mild traumatic brain injury (mTBI).
Eligibility
- Age range
- 18–65 years
- Sex
- All
- Healthy volunteers
- No
Inclusion Criteria: * Age 18-65 * Has sustained a single mTBI 3-12 months prior to enrollment * Meets criteria for PPCS (assessed using the CP Screen) * Has reliable access to a smartphone Exclusion Criteria: * Inability to provide informed consent or complete study procedures * History of moderate/severe TBI * Significant neurological or psychiatric disorders (other than PPCS-related symptoms like mild depression/anxiety) * Substance dependence within the last six months * Contraindications to tDCS (e.g., implanted metal, skin lesions on scalp)
Interventions
- DeviceActive tDCS
All participants will receive 10 sessions of cognitive training focused on executive functions, delivered over approximately 3 weeks. Cognitive training will be completed on a lab provided computer using PositScience BrainHQ or TaskFlow software. Concurrently, during each training session, participants will receive either active or sham tDCS. Stimulation will be delivered via saline-soaked sponge electrodes using the Soterix 1x1 miniCT TES device. The anode (active electrode) will be placed over the L-DLPFC (approximated by EEG coordinate F3) and the cathode (reference electrode) over the contralateral supraorbital area (Fp2). The active tDCS group will receive 2mA constant current for 20 minutes.
- DeviceSham tDCS
All participants will receive 10 sessions of cognitive training focused on executive functions, delivered over approximately 3 weeks. Cognitive training will be completed on a lab provided computer using PositScience BrainHQ or TaskFlow software. Concurrently, during each training session, participants will receive either active or sham tDCS. Stimulation will be delivered via saline-soaked sponge electrodes using the Soterix 1x1 miniCT TES device. The anode (active electrode) will be placed over the L-DLPFC (approximated by EEG coordinate F3) and the cathode (reference electrode) over the contralateral supraorbital area (Fp2). The sham tDCS group will receive a brief ramp up and ramp down of current at the beginning and end of the 20 minutes to mimic the sensation of active stimulation.
Location
- University of MinnesotaMinneapolis, Minnesota