WirelessDrugs
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Tiny brain implant delivers drugs with a remote control
An implant, the size of a human hair, can deliver drugs to the brain with the click of a button. A team of researchers from Washington University in St. Louis and the University of Illinois have demonstrated the wireless technology in mice. While a previous iteration of the device delivered LED to neurons that respond to light, the latest experiment successfully introduced pharmacological agents directly to the brain. A drug was first sent to one side of the brain that made a mouse move around in a circle. Next, shining a light onto cells that cue the release of dopamine rewarded the mice with happy feelings. When the rodents came around for more, the researchers used a remote control to interject with a drug that put a halt on the dopamine effect.
