Deep brain stimulation surgery is a neurosurgical procedure in which thin electrodes are implanted into precisely targeted deep brain structures and connected to an implanted pulse generator that delivers continuous, adjustable electrical stimulation to modulate dysfunctional neural circuits. It is an established th…
Deep brain stimulation surgery is a neurosurgical procedure in which thin electrodes are implanted into precisely targeted deep brain structures and connected to an implanted pulse generator that delivers continuous, adjustable electrical stimulation to modulate dysfunctional neural circuits. It is an established therapy for movement disorders, most prominently Parkinson's disease, where stimulation of targets such as the subthalamic nucleus or globus pallidus can reduce tremor, rigidity, bradykinesia, and medication-related motor fluctuations. Common targets and indications also include essential tremor, dystonia, and investigational applications such as epilepsy, where novel stimulation sites are being explored for seizure control. The procedure relies on stereotactic planning, intraoperative imaging or microelectrode recording, and often awake testing to confirm electrode placement, followed by postoperative programming of stimulation parameters including contact selection, amplitude, frequency, and pulse width. Advances such as segmented or directional electrodes allow current to be steered toward the intended structure, reducing stimulation spread to adjacent pathways and limiting side effects. Stimulation is reversible and tunable, distinguishing it from ablative lesioning. Research addresses target selection, patient eligibility, long-term outcomes, mechanism of action on network dynamics and functional connectivity, and the optimization of programming to balance symptom control against adverse effects across diverse neurological conditions.
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