Sound Waves for Delusions? What a Small Ultrasound Trial in Schizophrenia Really Shows

Awareness · Research explained for patients and families · By Dr. Saurabh Kumar, MD (Psychiatry, AIIMS New Delhi) · Consultant Neuropsychiatrist, Healthy Minds India, Patna · Based on reporting in Live Science (20 October 2026) · Reading time about 8 minutes

Every few months a family sits across from me and asks the same question in different words: "Doctor, is there anything new?" Usually they are asking about a son or daughter whose voices and suspicions have not fully settled despite years of medicine. This week there is something new to tell them about: not a treatment they can book, but a result worth understanding, because it points to where psychiatry is heading.

On 20 October 2026, a team at New York University published a small study in the journal npj Acoustics.¹ They used focused ultrasound (sound waves far above the range of hearing, the same physical principle as a pregnancy scan) to gently stimulate a structure deep inside the brain in ten people with schizophrenia or schizoaffective disorder. A single ten-minute session reduced their delusions for at least a week. Live Science reported it the same day.² Here is what it means, and what it does not.

First, what a delusion is

A delusion is a fixed false belief that does not shift with evidence: being convinced the neighbours are poisoning the water tank, that a chip has been placed in one's tooth, that a newsreader is sending personal messages. For families in Bihar this is often the most painful symptom, because it turns loved ones into suspects. Antipsychotic medicines help most people, but a meaningful minority are left with beliefs that persist, and the medicines themselves can bring weight gain, sedation and metabolic problems. That is the gap this research is trying to close. (For a plain-language overview of the illness itself, see schizophrenia: dispelling common misconceptions.)

What the researchers actually did

Ten patients took part, all people whose symptoms had persisted despite medicine.³ Each person was interviewed carefully so the team knew the exact content of their delusions, their level of hallucinations, and their thinking ability. Then, on two visits a week apart, each person received one real ultrasound session and one "sham" session that looked and felt identical but delivered no stimulation. Neither the patient nor the rater knew which was which: the gold-standard design for ruling out placebo effects.^1,3

Using MRI to guide the device, the team focused the sound waves on the right globus pallidus internus, a small structure deep in the brain that is part of a loop running between the cortex, the striatum, the pallidum and the thalamus. This loop is well known from Parkinson's disease, where it controls movement. (It is the same cortico-striato-thalamo-cortical circuit we explain in our article on the neurobiology of OCD.) The NYU group's theory is that in schizophrenia the same loop fails to filter out unimportant signals, so trivial events acquire enormous, frightening significance. As reported by Live Science, the lead author, Dr Wei Qi, put it as an imbalance between excitation and inhibition about what in the environment actually matters.²

A pregnancy scan listens with ultrasound. This device speaks with it: a focused whisper to one small region, deep beneath the skull.

What they found

One result, one session, one week. Nobody was cured. But the fact that a ten-minute, non-surgical stimulation produced a measurable, placebo-controlled drop in delusions is the kind of signal researchers wait years for.

Why this matters more than the numbers suggest

Readers who follow our clinic's work know that brain stimulation is already part of psychiatry. Transcranial magnetic stimulation (TMS) and transcranial direct current stimulation (tDCS) are established, non-invasive treatments for depression, OCD and some other conditions. Their limitation has always been depth: magnetic and electrical fields act mainly on the brain's outer surface, the cortex. The structures most involved in psychosis sit well below that.

Until now the only way to reach them was deep brain stimulation, a neurosurgical operation to implant electrodes, used in Parkinson's and rarely in severe OCD (we explain the surgical side in our article on deep brain stimulation for depression). Focused ultrasound offers something in between: deep, precise and non-surgical. Co-author Shy Shoham, a neural engineer, compared the transducer to a lens focusing light on a single point. Dr Deepak Sarpal of the University of Pittsburgh, who was not involved, observed that successful attempts to treat these deeper structures have been few.²

Earlier this year a different group used the same technology on the striatum and reported reduced hallucination severity immediately after stimulation, in a small first-in-human study.⁴ Two independent teams hitting the same circuit with the same tool is how a field starts to move.

What this does not mean: read this part twice

• It is not available. Not in India, not anywhere outside research centres. No clinic in Patna, Delhi or Mumbai offers focused ultrasound for schizophrenia, and anyone who claims to should be treated with great suspicion.
• Ten patients is a pilot, not proof. Trials of this size regularly produce results that vanish in larger studies. The authors themselves say it is too early to know the real benefit.³
• One week is not recovery. We do not know whether effects last, whether repeated sessions are safe, or what dose is right. These are the next experiments the team plans.
• It did nothing for voices or thinking. Hallucinations and cognition were unchanged. Delusions were the only symptom that moved.
• Medicines remain the foundation. Every participant stayed on their usual treatment. Nothing in this study suggests stopping antipsychotics; our article on why stopping an antipsychotic often leads to relapse explains why.

What families in Bihar can take from this today

1. 1Hope with a timeline.

   Serious science is actively working on the hardest symptoms. Realistic availability, if larger trials succeed, is likely a decade away, not a year.

2. 2Ask about what exists now.

   For persistent symptoms, there are already evidence-based options: medication optimisation, clozapine where appropriate, and in selected cases TMS or tDCS for specific symptoms. Discuss these with your psychiatrist rather than waiting for a future technology.

3. 3Beware of "miracle" claims.

   Research headlines are quickly copied by people selling unproven devices and therapies. If a treatment is not in a peer-reviewed journal and not offered by a recognised hospital, it is not this.

4. 4Keep the basics strong.

   Regular medicine, sleep, reduced family criticism and early review at the first sign of relapse still do more for outcomes than any experimental device.

When to seek help urgently

Your questions

Frequently Asked Questions

• Can focused ultrasound treat schizophrenia?

  Not yet. A 2026 pilot study of ten patients found that one ten-minute session aimed at the right globus pallidus internus reduced delusions for about a week compared with a sham session, but voices and thinking did not change. It is experimental and needs much larger trials.

• Is focused ultrasound for schizophrenia available in India?

  No. It is available only in research studies abroad. No clinic in Patna, Delhi or Mumbai offers it, and claims to the contrary should be treated with great suspicion.

• Is this the same ultrasound used for pregnancy scans?

  Same physics, different purpose. A scan uses ultrasound to listen and build an image. This device focuses low-intensity ultrasound on one tiny spot to change the activity of neurons there. It does not heat or damage tissue at the intensities used.

• Is it like TMS?

  Both are non-invasive brain stimulation. TMS uses magnetic pulses and works best on the cortical surface; ultrasound can be focused on structures much deeper. They may one day complement each other.

• Could my relative join a trial?

  At present these trials are at NYU and a few other research centres abroad. There is no Indian trial that I am aware of. If that changes, we will say so through the clinic's website.

• Does this mean schizophrenia is a "brain circuit" disease?

  It supports the idea that a specific circuit contributes to delusions. Schizophrenia remains a complex condition with genetic, developmental and social contributors; circuit findings add to that picture rather than replacing it.

About this article

Written and medically reviewed by

Dr. Saurabh Kumar

• MD (Psychiatry) AIIMS New Delhi
• Associate Professor & HOD, Dept. of Psychiatry, RDJM Medical College, Muzaffarpur
• Ex-Assistant Professor, PMCH Patna
• Consultant, Healthy Minds India, Patna

Written

October 2026

Format

Research explained

Evidence

Randomised, sham-controlled, double-blind crossover pilot study of 10 patients; one session each, one-week follow-up

Sources

4 references

• Clinical observations, the Bihar context and the family guidance are the author's own. The case example is a fictional composite. This article describes research only and does not advertise any treatment; focused ultrasound for schizophrenia is not offered at Healthy Minds India or anywhere in India.
• Dr. Saurabh Kumar trained in psychiatry at Maulana Azad Medical College and AIIMS New Delhi, has published research on brain stimulation in psychiatric disorders, and writes on mental health for a general audience. He is the author of The Indian Mind.

© 2026 Healthy Minds India, Patna · Research explained, October 2026