News India Times

www.newsindiatimes.com – that’s all you need to know Brown University Engineers, Led By Indian American, Tackle Brain Injuries With Innovative Wearable Technology A collaborative team led by the School of Engineering’s Haneesh Kesari works to better prevent, detect and understand traumatic brain injuries by designing tools like sensor-equipped helmets and harnesses. -PROVIDENCE, R.I. [Brown University] T raumatic brain injuries are a pervasive yet elusive health problem, affecting millions worldwide. According to recent data, an estimated 2 million people experience a traumatic brain injury each year in the U.S. From kids and adults on playing fields, to soldiers and sailors on battlefields, the risk of brain injury includes everything frommild concussion to chronic traumatic encephalopathy (CTE) — a progressive disease often associated with football players who suffer repeated blows to the head. Despite alarming trends about these types of injuries, they remain frustratingly difficult to diagnose and even harder to prevent. The applied mechanics laboratory at Brown University’s School of Engineering is part of an effort to develop solutions. The 10-person team—which includes postdoctoral researchers, graduate and under- graduate students — is led by Haneesh Kesari, an associ- ate professor of engineering. The lab’s focus is centered on traumatic brain injury and blunt trauma the body can endure. “We usually first become aware of injury through us feeling pain,” Kesari said. “In fact, through most of our evolutionary history, injury to the brain came via the skull, such as during falls or blows to the head, and not directly to the brain itself by means of chronic violent shaking of the head. It’s reasonable to speculate that this is one of the reasons why the skin and the muscles around the skull have pain receptors, but the brain itself does not. The lack of pain receptors inside the brain’s tissues means it is not possible to ‘feel the pain’ of mild traumatic brain injury, at least not in the traditional sense that we do with other types of traumatic injuries —mak- ing it particularly insidious.” To address that challenge, the Kesari lab has been developing wearable devices for use in experimental set- tings to measure the stresses and strains associated with blows to the head, blast trauma, or violent thrashing of the head and neck. Working with collaborators at Brown and beyond, the U.S. Office of Naval Research-funded effort is part of a long-term project called PANTHER that is studying brain and bodily injury. It’s led by research- ers at the University ofWisconsin-Madison and includes Kesari’s lab as well as Brown researchers Diane Hoffman- Kim and David Henann. The multi-institution collaboration looks to link dam- age occurring at the cellular level in the brain with the forces and motions involved in blows to the head. This is where the Kesari group’s wearable devices come into play. “We have Fitbits and other types of sport watches that monitor our body’s health, like how many steps we take in a day or our calories burned, so the thought was why not create a Fitbit-type device that does this for the brain’s mechanical health,” Kesari said. INTRODUCING THE ACCELO-HAT Known as the accelo-hat, the accelerometer-laced helmet the team has developed is meant to take the guesswork out of brain injury. The helmet — designed and built in Kesari’s lab — uses both commercial ac- celerometers and sensors manufactured by the team to capture raw motion data from any movement in the head of a user so that researchers can extrapolate that data into a virtual model. Using the model, the team then recreates that motion and simulates what would happen inside the brain as a result. Jeetika Patangia and Sayaka Kochiyama, both Ph.D. students, perform experiments on bendable fibers. For example, the lab has recreated impacts to the brain from a person heading a soccer ball and from riding on a high-speed motorboat as it slams into the water repeat- edly — a type of potential injury of increasing concern to the Navy. Those studies revealed dramatic spikes in stress applied to the brain because of these activities. The success of the accelo-hat has led the team to expand it to encompass a human-sized dummy implanted with ac- celerometer sensors throughout. The system serves as a scientific tool to measure and analyze the severity of accidents too dangerous to test on humans — such as falling down stairs or surviving a plane crash. The National Institute for Aviation Research, for example, has used the accelo-hat in efforts to develop safer aircraft seats. The research involves dropping an airplane fuselage several feet to simulate a landing gear failure while human models wearing accelo-hats sit in the seats. “We could see what happened injury wise if they changed the height of the seat or if they increased the cushioning in the back seat,” Kesari said. “Do those changes make it more safe or less safe? Those questions couldn’t really be answered be- fore, but now with the theory and algorithms that we developed, they can be.” A CROSS-TEAM EFFORT The accelo-hat and the mathematical theory that powers it stem from the collective expertise and dedication of the team both in the Kesari lab and via its collaborators at Brown. Each team member brings a unique skill set to the table and plays a part in a much larger effort, including developing complex algorithms to decode accel- erometer data and translating raw numbers into meaningful insights about how forces impact the human body. Brown postdoctoral research associate YangWan, for instance, helped take Kesari’s initial theory of how to extract the accelerometer data from the sensors into actual experimental measurements capturing accelera- tions and stresses the human body experiences using the accelo-hat. The work not only involved statistical analysis and highly advanced decoding techniques, but also some boots on the ground. Wan and teammembers visited various Navy-supported research labs and bases to help run many of the experiments. Beyond data interpretation, the lab’s success has also relied on partnerships with Brown researchers like Hoffman-Kim, a neuroscientist and engineer, to enhance the team’s ability to connect mechanical insights with biological realities. Hoffman-Kim’s lab creates 3D brain cell cultures, or mini-brains, that mimic real neural tissue and provide invaluable data about cellular responses to trauma. Senior research associate Rafael González-Cruz plays a key role in this partnership, bridging the gap between engineering and neuroscience. “Members of the Kesari lab design sensors that can detect changes in acceleration and position of the head after receiving an injury and use that to be able to deter- mine whether the metrics compiled by these sensors are indicators of injury — I look at the biological response of these forces in actual living cells,” González-Cruz said. To perform the injury experiments on the mini-brains, González-Cruz uses a centrifuge that rotates at fast speeds to create an enormous amount of force —which is traditionally used to separate cells by size and density. Most recently, he andWan led a test that allowed the team to measure what happens to mini-brains when they applied different levels of sustained force. This allowed the team to measure, with precision, the cell damage not only caused by different amounts of force but the amount of damage that unfolds over longer periods of By Juan Siliezar - Continued On Page 14 PHOTO:byCherie Daniel PHOTO:byCherie Daniel PHOTO:by Nick Dentamaro PHOTO:by Nick Dentamaro Haneesh Kesari (left) helps postdoctoral researcher Yang Wan to don the accelo-hat, which helps to measure forces in the brain associated with rapid head movements. Kesari and members of his Applied Mechanics lab work with “Rescue Randy,” a human model that helps to measure the forces associated with trauma-inducing events. Jeetika Patangia and Sayaka Kochiyama, both Ph.D. students, perform experiments on bendable fibers. Hana Butler Gutierrez, a research associate in the lab, works on an accelo-hat prototype. Cover Story News India Times (July 26, 2025 - August 1, 2025) August 1, 2025 12