Deep brain stimulation (DBS) is a medical procedure that involves implanting a device that sends electrical impulses to specific areas of the brain. This technique is primarily used to treat neurological disorders such as Parkinson's disease, essential tremor, and dystonia. The device, often referred to as a neurostimulator, is surgically placed under the skin and connected to electrodes in the brain. The electrical impulses help regulate abnormal brain activity, which can alleviate symptoms like tremors, stiffness, and movement difficulties. DBS is typically considered when other treatments, such as medication, are not effective. It is a reversible procedure, allowing adjustments to be made based on the patient's needs.