Figure 1
From: Neural oscillations promoting perceptual stability and perceptual memory during bistable perception
Experimental procedure and pre-tDCS behavioral results. (A) Each subject underwent the experiment on three different days. On each day, the experiment only differed in two possible ways: the region of tDCS stimulation and whether active or sham stimulation was applied. The experimental procedure on each day consisted of 4 steps: (1) Subject performed pre-tDCS task, (2) Double-blinded tDCS was applied over the target region, (3) tDCS cap was removed and the EEG cap was prepared, (4) Subject performed post-tDCS task under EEG recording, which used the exact same task structure as the pre-tDCS task. (B) The two target regions used, occipital pole (Occ) and right inferior frontal gyrus (rIFG), and estimates of the electric field over the cortex when applying 2.0 mA tDCS current; image generated using ROAST toolbox from28. (C) Subjects performed two task conditions: continuous-viewing (Left) and intermittent-viewing (Right). For both task conditions, half of the trials presented the Necker cube image and the other half presented the Rubin face-vase image. (D) Violin plots of behavioral data across subjects for cube trials in the pre-tDCS task (face-vase trials shown in Fig. S1A). Dotted line for intermittent-viewing data (Right) indicates 0.5 probability of reversal. The cube image was created by one of the authors (B.J.H.); the face-vase image was adapted from a figure in29.
