The functional modulation of deep brain structures plays a crucial role in the treatment of psychiatric disorders; however, current approaches primarily rely on invasive techniques such as deep brain stimulation. Temporal Interference (TI) transcranial electrical stimulation is an emerging non-invasive neuromodulation technique capable of precisely regulating the activity of deep brain nuclei, offering an innovative and promising approach for psychiatric disorder treatment. In recent years, studies conducted on healthy individuals and patients with neurological disorders (e.g., Parkinson's disease) have provided preliminary evidence supporting the deep brain modulation capabilities of TI. Meanwhile, multiple registered clinical studies are actively investigating its potential applications in psychiatric treatment. This review systematically summarizes the fundamental principles, neuromodulatory mechanisms, and recent research advances of TI in psychiatric disorders. Additionally, it highlights key scientific issues that need to be addressed to facilitate further basic research and clinical translation in this field.

The functional modulation of deep brain structures plays a crucial role in the treatment of psychiatric disorders; however, current approaches primarily rely on invasive techniques such as deep brain stimulation. Temporal Interference (TI) transcranial electrical stimulation is an emerging non-invasive neuromodulation technique capable of precisely regulating the activity of deep brain nuclei, offering an innovative and promising approach for psychiatric disorder treatment. In recent years, studies conducted on healthy individuals and patients with neurological disorders (e.g., Parkinson's disease) have provided preliminary evidence supporting the deep brain modulation capabilities of TI. Meanwhile, multiple registered clinical studies are actively investigating its potential applications in psychiatric treatment. This review systematically summarizes the fundamental principles, neuromodulatory mechanisms, and recent research advances of TI in psychiatric disorders. Additionally, it highlights key scientific issues that need to be addressed to facilitate further basic research and clinical translation in this field.