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FEB 18, 2013 - Popular Science

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How Neuroscience Will Fight Five Age-Old Afflictions

Rewiring The Brain: Seizures a) A surgeon identifies where in the brain seizures occur using electrodes placed on the scalp, then inserts an electrode array directly into that region. b) A seizure starts when neurons become overly excited, causing a prominent electrical signature. The array detects this signature and emits its own electrical pulse, which disrupts the neurons. c) The pulse also puts a negative current on a polymer enveloping the electrodes on the array, causing its charge to change from positive to neutral. Negatively charged antiseizure-drug molecules drop away from the ... Read More

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