Transcranial Electrical Stimulation for mTBI

"The EEG interface device is the J\&J Engineering I-330 C2. IASIS is delivered via the 4 EEG leads with respect to the Common Neck Reference. During each session, 2 electrodes are attached to the participant's left and right mastoids, while the remaining 2 electrodes are moved to various locations on the scalp to record EEG signals. All 4 electrodes are involved in applying weak electric current pulses back to the brain. The feedback signal consists 2 types of narrow pulse trains, both with 150mV in amplitude.~The Nexalin device, FDA clearance (501K=K024377, Classification: Stimulator, Cranial Electrotherapy: CFR 882. 5800: U.S. Patent #6904322B2), produces a waveform that provides tES to the brain delivered at a frequency of 4Hz, 40Hz, and 77.5Hz at 0 to 15mA peak current. Evidence shows this waveform, at these frequencies, results in improved clinical outcomes for anxiety and pain. We hypothesize that repeated TES treatments serve to stimulate long-term neurochemical changes."