A technology developed at ETH Zurich over the past few years for controlling microvehicles using ultrasound also works in the brain, as researchers have now been able to show.

These microvehicles are gas bubbles, which are harmless and dissolve once their job is done.

In the future, these microvehicles could be equipped with medications and deliver them to specific points in the brain. This may increase the efficacy of the drugs and reduce their side effects.