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Muraoka Lab
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A lab that builds devices to aid recovery from paralysis, starting from technologies for measuring the body.
AboutAbout the lab
Building rehabilitation tools from technologies that measure the body.
The Muraoka Lab uses measurement to clarify how the body works, and develops devices that support rehabilitation and health.
At its core are elucidating the mechanisms by which paralysis caused by central nervous system disease recovers, and creating treatments based on that understanding.
Using electrical stimulation and biofeedback, the lab works to suppress spasticity and to improve the ability to move voluntarily.
Rather than simply chasing technology, the lab values starting from social problems and seeking simple, rational solutions.
Key terms
- Spasticity
- A condition in which muscles stay stiff and become hard to move after a disease of the brain or spinal cord
- Biofeedback
- A method that returns information about the body's state to the person through sound or a screen so they can learn to regulate it themselves
- Hemiplegia
- Difficulty moving one side, left or right, of the body, caused by conditions such as stroke
ResearchResearch themes
With a super-aged society in view, the lab focuses on rehabilitation for central nervous system diseases, which increase caregiving burdens and medical costs. Through biomeasurement, it works to elucidate the mechanisms of recovery from paralysis and to develop treatments based on them. It also develops methods for evaluating spasticity and swallowing, and methods for analyzing gait.
*Illustrative imageTherapeutic Electrical Stimulation (TES)
In severe paralysis, where a person cannot move their muscles on their own, muscles waste away when left unused for a long time. By applying electrical stimulation to muscles and peripheral nerves, the lab builds up muscle and activates the central nervous system, drawing out contractions driven by the person's own intention.
*Illustrative imageFunctional Electrical Stimulation (FES)
Electrical stimulation applied from outside controls muscle contraction to assist or reconstruct everyday movements such as grasping and releasing. Because it is worn and used every day, the lab is working on applying it to walking in combination with orthoses, and on miniaturization while maintaining operating time.
*Illustrative imageIntegrated Volitional Control Electrical Stimulation (IVES)
The device detects faint myoelectric signals and returns electrical stimulation proportional to them to the same muscle, amplifying its contraction. Its feature is that it combines easily with other treatments such as orthotic therapy, and the lab has also added a function to record activity levels and worked on smartphone connectivity.
MembersFaculty
- ProfessorYoshihiro Muraoka
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Gait laboratory” D. Gordon E. Robertson / CC BY-SA 3.0 (cropped)
- Therapeutic Electrical Stimulation (TES): “Skeletal muscle 400x” Alexander G. Cheroske / CC BY-SA 4.0 (cropped)
- Functional Electrical Stimulation (FES): “Ankle foot orthosis” Sir Sitt / CC BY-SA 4.0 (cropped)
- Integrated Volitional Control Electrical Stimulation (IVES): “Nervous Tissue Spinal Cord Motor Neuron ( )” Berkshire Community College Bioscience Image Library / CC0 (cropped)
- Related lab (Iwabuchi Lab): “Tactile paving in China 3” Mx. Granger / CC0 (cropped)
- Related lab (Okazaki Lab): “Covid 19 Doctor Consultation” Mona Hassan Abo-Abda / CC BY-SA 4.0 (cropped)
- Related lab (Ogihara Lab): “Snow-cholera-map-1” John Snow / Public domain (cropped)
- Related lab (Suzuki Lab): “Podomètre-Musée Le Secq des Tournelles” Ji-Elle / CC BY-SA 4.0 (cropped)
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