How the world’s first brain implant to control epileptic seizures works

News Excerpt:

A UK-based teenager has become the first person in the world to be fitted with a brain implant to help bring his epileptic seizures under control.

What is epilepsy?

  • Epilepsy is a condition characterized by recurrent seizures, manifesting as jerking movements in the arms and legs, temporary confusion, staring spells, or muscle stiffness resulting from abnormal electrical brain activity.
  • In nearly half of the cases, the cause of epilepsy remains unidentified. However, factors such as head trauma, brain tumours, certain infections like meningitis, or genetics can contribute to its development. This condition raises the risk of accidents, drowning, and falls.
  • In India, the prevalence of epilepsy ranges from 3 to 11.9 per 1,000 people, according to a 2022 Lancet study commentary. 
    • Despite the availability of various anti-seizure medications, 30% of patients do not respond to treatment.

How does the device ‘neurostimulator’ work?

What is DBS (Deep Brain Stimulation)?

  • Deep brain stimulation (DBS) involves implanting electrodes within areas of the brain. The electrodes produce electrical impulses that affect brain activity to treat certain medical conditions. The electrical impulses also can affect cells and chemicals within the brain that cause medical conditions.
  • The amount of stimulation in deep brain stimulation is controlled by a pacemaker-like device placed under the skin in the upper chest. A wire that travels under the skin connects this device to the electrodes in the brain.
  • Deep brain stimulation is commonly used to treat a number of conditions, such as:
    • Parkinson's disease.
    • Essential tremor.
    • Conditions that cause dystonia, such as Meige syndrome.
    • Epilepsy.
    • Tourette syndrome.
    • Obsessive-compulsive disorder.

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