No surgery needed: New ultrasound helmet enables deep brain stimulation

Decorative image. A high-tech helmet (Image source: AI-generated)

Researchers from UCL and the University of Oxford have collaborated to develop an ultrasound helmet that can non-invasively stimulate regions deep inside the brain with unprecedented precision. This could potentially be used for treatment of disorders like Parkinson’s disease.

Researchers from the University College London (UCL) and the University of Oxford have developed a device that can precisely target deep brain structures without the need for surgery, a first in medicine. This — detailed in the journal Nature Communications — breakthrough could transform the treatment of disorders like depression, essential tremors, and Parkinson’s disease.

This technology offers a non-invasive alternative to deep brain stimulation (DBS) — a common treatment for conditions like Parkinson’s that currently requires the implantation of electrodes into the brain. This new system uses transcranial ultrasound stimulation (TUS) technology to deliver mechanical pulses, modifying the activity of neurons.

The system features a helmet with 256 individual ultrasound components that work together to send highly focused beams to specific regions of the brain, modifying neuronal activity as desired. The study shows this new device can accurately focus on brain regions 30 times smaller than previous deep brain ultrasound devices.

In a study involving seven human participants, the team successfully demonstrated the system’s precision. They successfully focused on a small structure deep inside the brain that is involved in vision — the lateral geniculate nucleus (LGN). A real-time fMRI scan was used to confirm the device did accurately hit the intended target.

The ability to precisely modulate deep brain structures without surgery represents a paradigm shift in neuroscience, offering a safe, reversible, and repeatable method for both understanding brain function and developing targeted therapies. — Professor Bradley Treeby of UCL, senior author of the study.

Some members of the research team have now started a UCL spinout company — NeuroHarmonics — aiming to make the device accessible by creating a compact, wearable version of it. If successful, this technology could revolutionize neuroscience.

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