0.267, E29 = 0.267, G32 = −0.267, L4 = −0.267, K5 = −0.267. Although induction of peripheral flicker perception is typically only reported when using higher frequency tACS 59–61, we nonetheless used post-experiment questionnaires to confirm that our low-frequency stimulation procedure did not induce peripheral flicker perception. All subjects confirmed that stimulation was acceptable and did not induce painful skin sensations or phosphenes.
