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Home NEWS Science News

Virtual reality applied to rehabilitation for stroke and neurodegenerative disease patients

Bioengineer by Bioengineer
December 14, 2020
in Science News
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A study performed at one of the Research Centers supported by FAPESP resulted in development of a novel rehabilitation device. The article was recognized as outstanding by the 20th International Conference on Computational Science and its Applications

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Credit: Raphael Casseb/UNICAMP

By José Tadeu Arantes | Agência FAPESP – Virtual reality-based rehabilitation programs are becoming an important complement to conventional motor therapy for stroke patients and individuals with neurodegenerative diseases. Immersion in virtual environments stimulates several sensory systems, especially sight and hearing, and intensifies central nervous system information input and output.

“The technology is expected to increase brain connectivity by stimulating the new neural connections needed to repair the losses caused by injury or by the patient’s clinical condition,” Alexandre Brandão, a researcher at the University of Campinas’s Physics Institute (IFGW-UNICAMP), told Agência FAPESP. Brandão is also affiliated with the Brazilian Research Institute for Neuroscience and Neurotechnology (BRAINN), one of the Research, Innovation and Dissemination Centers (RIDCs) supported by FAPESP.

Brandão is the lead author of the paper “Biomechanics Sensor Node for Virtual Reality: A Wearable Device Applied to Gait Recovery for Neurofunctional Rehabilitation”, distinguished with a Best Paper award in the Virtual Reality (VR) category at the 20th International Conference on Computational Science and its Applications (ICCSA 2020). Originally set to take place at the University of Cagliari in Italy, the conference was held online because of the pandemic.

The study described in the paper resulted in the development of a wearable device called Biomechanics Sensor Node (BSN) that captures user data and controls virtual environments, as well as a new software solution integrating the BSN with Unity Editor, one of the most widely used game engines and virtual world-building programs. “Integration of the wearable with the Unity software means patients undergoing motor rehabilitation can interact with VR environments while the therapist views data for the movements performed during the session,” Brandão explained.

The BSN consists of an inertial sensor that is placed on the user’s ankle, detects motion relative to stationary gait, and tracks the body in the three planes of movement. The signals generated are processed and transmitted to a smartphone, which is used to control an avatar that interacts with the virtual environment. “The patient’s actual movements may be very limited or small, but in the virtual context the captured and processed data generates complete movements by the avatar,” Brandão said. “The visual information gives patients the impression they’re able to perform these complete movements, and this can potentially activate more neural networks than conventional mechanical therapy.”

Functional magnetic resonance imaging (fMRI) scans show that the procedure activates specific brain regions associated with these fictitious movements. A next step entails performing clinical tests to measure the functional gains in the patient’s motor recovery. Another expected development will be to have the avatar engage in everyday activities, practice sports, or interact with other people in a multi-user virtual environment.

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The study was supported by FAPESP via a postdoctoral fellowship awarded to Brandão for the project “Application and development of virtual reality tools to complement conventional therapy of stroke patients and evaluation of recovery using brain connectivity through fMRI”.

About São Paulo Research Foundation (FAPESP)

The São Paulo Research Foundation (FAPESP) is a public institution with the mission of supporting scientific research in all fields of knowledge by awarding scholarships, fellowships and grants to investigators linked with higher education and research institutions in the State of São Paulo, Brazil. FAPESP is aware that the very best research can only be done by working with the best researchers internationally. Therefore, it has established partnerships with funding agencies, higher education, private companies, and research organizations in other countries known for the quality of their research and has been encouraging scientists funded by its grants to further develop their international collaboration. You can learn more about FAPESP at http://www.fapesp.br/en and visit FAPESP news agency at http://www.agencia.fapesp.br/en to keep updated with the latest scientific breakthroughs FAPESP helps achieve through its many programs, awards and research centers. You may also subscribe to FAPESP news agency at http://agencia.fapesp.br/subscribe.

Media Contact
Joao Carlos Silva
[email protected]

Original Source

http://agencia.fapesp.br//34835/

Related Journal Article

http://dx.doi.org/10.1007/978-3-030-58820-5_54

Tags: Computer ScienceRehabilitation/Prosthetics/Plastic SurgeryStrokeTechnology/Engineering/Computer Science
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