Deep brain stimulation (DBS) is a neurosurgical procedure that involves implanting electrodes in specific brain regions to modulate neural activity, often used to treat neurological and psychiatric disorders. This innovative technique represents a significant advancement in the treatment of conditions such as Parkinson's disease, major depressive disorder, and obsessive-compulsive disorder, demonstrating its potential as a therapeutic option that can improve the quality of life for patients who do not respond to conventional treatments.