I still vividly remember the first time we observed neurons responding not to audible sound, but to concentrated, precisely calibrated ultrasonic pulses. On the screen in front of us, calcium signals from brain cells began to rise and fall in little waves. It was less about forcing the brain to adapt and more about listening to the brain and responding subtly.
Understanding how neurons interact and how neurological conditions like Parkinson’s disease affect this communication has been the focus of my study for many years. Calcium, a small ion that functions as a potent messenger inside cells, is at the center of this communication.
Neurons struggle to survive, connect, and operate correctly when calcium transmission is disrupted. Our team began to wonder if we might safely modify this fundamental signaling function without requiring invasive operations or drugs.
To answer that question, we looked into low-intensity focused ultrasound (FUS), a technique that can accurately transport sonic energy deep into tissue. Unlike high-power ultrasound used for ablation, we use low ultrasonic intensities meant to modify cellular activity rather than kill tissue.
In recent research, we employed live-cell imaging to track calcium dynamics in real time while applying low-intensity focused ultrasound to primary cortical neuron cultures. What we saw was positive. Without affecting cell viability or morphology, ultrasound exposure resulted in regulated and repeatable modifications in calcium signaling.
To put it another way, neurons reacted while maintaining their health. For me, this was a significant event. Safety is always the top issue, even if there are a number of effective neuromodulation techniques. The finding that neurons tolerated ultrasonography well strengthened our belief that this approach would be suitable for long-term therapeutic development.
Our research is published in the journal Neurochemical Research.
Why is it important?
Neuronal survival, synaptic plasticity, and neurotransmitter release are all regulated by calcium signaling. Numerous brain illnesses cause disruptions to these systems. Restoring equilibrium in malfunctioning brain circuits would be possible if calcium-dependent signaling could be adjusted noninvasively.
The fact that ultrasonography provides accuracy without penetration is what really intrigues me. There are no implants, electrodes, or permanent hardware. Rather, we are communicating with biology using sound energy. Additionally, this discovery aligns with our group’s broader objective of integrating molecular and cellular neuroscience with neuromodulation technology.
We are getting closer to customized, adaptable treatments that consider the unique dynamics of the brain by comprehending how physical stimuli affect intracellular signaling.
Naturally, this study is still in its early stages. There are still a lot of steps to go before clinical use, and our trials were conducted in vitro. However, every treatment session starts with a straightforward inquiry and a thorough initial observation. Observing how neurons react to mild ultrasound seemed to me like a fresh exchange between biology and technology.
A discussion that might eventually aid in the creation of safer and more accurate neurological illness therapies. Progress doesn’t always come in the form of a huge breakthrough. Sometimes it tells us we are headed on the correct path with a little, silent signal, such as a calcium wave rising inside a single neuron.
This story is part of Science X Dialog, where researchers can report findings from their published research articles. Visit this page for information about Science X Dialog and how to participate.
More information
Iqra Bano et al, Noninvasive Focused Ultrasound as a Safe Modulator of Calcium-Dependent Neurochemical Signalling in Primary Cortical Cultures, Neurochemical Research (2026). DOI: 10.1007/s11064-026-04676-z
Clinical categories
Dr. Bano is an active contributor to the European Union Joint Program Neurodegenerative Disease Research (JPND) project (REMOPD), Restoring Motor Functions in Parkinson’s Disease with Noninvasive Hybrid Transcranial Neuromodulation. Her ongoing research, in collaboration with Dr. Grygoriy Tsenov and Dr. Jaison Jeevanandam at NUDZ, integrates neurochemistry, nanotechnology, and cellular neurophysiology by evaluating the effects of selenium-derived nanoparticles, organic selenium compounds, and FUS-mediated calcium signaling as potential neuroprotective strategies. Through this multidisciplinary approach, she aims to elucidate the molecular mechanisms underlying neuronal resilience and contribute to the development of safe, non-invasive therapeutic interventions for neurodegenerative disorders. Her broader research vision bridges fundamental neuroscience with applied nanomedicine to promote translational advances in brain health.
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