What is the scientific basis of TCEA?
TCEA involves placing needle electrodes on the scalp, and harmless current is across the cranium. The current can hyperpolarize or depolarize neurons in the path of the current depending on the electrode polarity. It was shown that bilateral current over frontal cortex enhanced retention of word pairs learned during the preceding day (Monti A, 2008). A slight change in the resting potential of stimulated cells was observed by 1 mA stimulation. As a result, the information processing was improved through bringing neurons closer to depolarization thresholds in response to appropriate inputs, or by strengthening effects on glutamatergic synapses[JL1] (Stagg CJ, 2009).
