In early studies, low-level sensory suppression is related to advanced cognitive functions. For example, spatial suppression index (SI) has been proved to be related to advanced cognitive functions and multiple psychiatric disorders. On the other hand, advanced cognitive functions, such as work memory (WM), depend on high-level suppression ability of irrelevant information, accompanied by beta-band desynchronization. However, there are few studies to explore whether low-level sensory suppression is associated with high-level suppression ability of irrelevant information.