Figure 2. (IMAGE) Science China Press Caption a) SSVEP signals before and after adversarial perturbation (almost completely overlapping). The output text was changed from "Y" to "N"; b) Spectral analysis for benign and adversarial SSVEP signals. Credit @Science China Press Usage Restrictions Use with credits License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.