 Transcranial alternating current stimulation, TAX, is a promising non-invasive neuromodulation technique that can be used to enhance stroke rehabilitation. This study investigated the frequency-specific effects of TAX in chronic stroke patients. The researchers observed that 10 Hz TAX had a greater impact on motor-related brain activity, while 20 Hz TAX had a more widespread effect on brain regions related to executive control. Additionally, the researchers observed that TAX altered the functional interactions between sensory motor regions and other brain regions. These findings provide valuable insights into the mechanisms of TAX and its potential applications in stroke rehabilitation. This article was authored by Kai Yuan, Qing Chen, Wu Tao Lu, and others.