Breaking News
January 23, 2019 - Scientists reveal new mechanism that could lead to specific treatment of strokes and seizures
January 23, 2019 - Both educational level and occupational orientation predict mother’s smoking during pregnancy
January 23, 2019 - How to (gently) get your child to brush their teeth
January 23, 2019 - Short-term hospital readmissions for gun injuries cost $86 million a year | News Center
January 23, 2019 - New certified reference material for testing residual solvents in cannabis
January 23, 2019 - Gene-edited chickens could prevent future flu pandemic
January 23, 2019 - Cardiovascular disease risk begins even before birth
January 23, 2019 - Younger patients receiving kidney transplant more likely to live longer, shows data
January 23, 2019 - Skin samples hold early signs of prion disease, research suggests
January 23, 2019 - Researchers discover how body initiates repair mechanisms that limits damage to myelin sheath
January 23, 2019 - Fecal transplant from certain donors better than others
January 23, 2019 - Risk for Uninsurance in AMI Patients Reduced With Medicaid Expansion
January 23, 2019 - Readmissions reduction program may be associated with increase in patient-level mortality
January 23, 2019 - Fostering translation and communication in medicine and beyond
January 23, 2019 - To Fight Fatty Liver, Avoid Sugary Foods and Drinks
January 23, 2019 - TPU scientists develop new implants that double the rate of bone lengthening in kids
January 23, 2019 - New sessions at Pittcon 2019
January 23, 2019 - Insilico to present latest findings in AI for Drug Discovery at 3rd Annual SABPA FTD Forum
January 23, 2019 - Opioid overdose patients can be safely discharged an hour after administration of naloxone
January 23, 2019 - Scientists find bacterial extracellular vesicles in human blood
January 23, 2019 - Researchers gain new insights into development of necrotizing enterocolitis in preemies
January 23, 2019 - Medical expert advises people with epilepsy not to stockpile medicines
January 23, 2019 - Study outlines research priorities for improving pediatric patient care and safety
January 23, 2019 - Bedfont to exhibit NObreath FeNO monitor at Arab Health 2019
January 23, 2019 - Nicotinamide riboside supplementation confers significant physiological benefits to mothers and offspring
January 23, 2019 - Increasing temperatures may help preserve crop nutrition
January 23, 2019 - Many Oncologists in the Dark About LGBTQ Health Needs
January 23, 2019 - Epigenetic change causes fruit fly babies to inherit diet-induced heart disease
January 23, 2019 - Erasing memories could reduce relapse rates among drug addicts
January 23, 2019 - African Americans who smoke cigarettes are more likely to develop peripheral artery disease
January 23, 2019 - Unique data combination helps FinnGen researchers to fund links between genetic factors and health
January 23, 2019 - Parents’ mental health problems associated with reactive attachment disorder in children
January 23, 2019 - Graphene Flagship project studies impact of graphene and related materials on our health
January 23, 2019 - The connection between the Pope and contraceptive pills
January 23, 2019 - Prior dengue infection could protect children from symptomatic Zika
January 23, 2019 - Previous dengue virus infection associated with protection from symptomatic Zika
January 23, 2019 - VISTA checkpoint implicated in pancreatic cancer immunotherapy resistance
January 23, 2019 - The Tiny Camera That Could Revolutionize Cardiovascular Surgery
January 23, 2019 - Peptide isolated from soil fungi has antitumor and antibacterial properties
January 23, 2019 - TGen identifies polio-like virus as potential cause of Acute Flaccid Myelitis outbreak
January 23, 2019 - Migrants and refugees do not bring disease and are at greater health risk themselves says WHO
January 23, 2019 - Examing the effects of menopause in workplace
January 23, 2019 - Enemy number 1 – Air pollution and climate change top of WHO agenda
January 23, 2019 - Two Positive Phase III studies of Tafenoquine for the Radical Cure of Plasmodium vivax Malaria Published in The New England Journal of Medicine
January 23, 2019 - World Trade Center responders at increased risk for head and neck cancers
January 23, 2019 - Low-sugar diet leads to significant improvement in nonalcoholic fatty liver disease in boys
January 23, 2019 - Chaos in bodily regulation can optimize our immune system, finds study
January 23, 2019 - Short, text-based exercises can increase happiness for adults recovering from substance use disorders
January 23, 2019 - Body size may have greater influence on women’s lifespan than men
January 23, 2019 - Groundbreaking tool helps visualize neuronal activity with near-infrared light
January 23, 2019 - Prior dengue immunity in children may be protective against symptomatic Zika
January 23, 2019 - Holocaust survivors with PTSD and their offspring exhibit more unhealthy behavior patterns
January 23, 2019 - Scientists discover new genetic mutations causing inherited deaf-blindness
January 23, 2019 - UC team designs new naloxone-dispensing smart device
January 23, 2019 - Torrent Pharmaceuticals Limited Issues Voluntary Nationwide Recall of Losartan Potassium Tablets, USP and Losartan Potassium and Hydrochlorothiazide Tablets, USP
January 23, 2019 - Brain activity shows development of visual sensitivity in autism
January 23, 2019 - Two hour gap between dinner and sleep is overrated says Japanese research
January 23, 2019 - Fear and embarrassment are causing smear test numbers to plummet
January 23, 2019 - Protein-secreting device implanted in epileptic rats reduces seizures, improves cognition
January 23, 2019 - Reintroduction project recovers current wild population of green turtle in Cayman Islands
January 23, 2019 - Cancer survivors face greater financial burden related to medical bills
January 23, 2019 - PSA screening reduces prostate cancer deaths by 30%
January 23, 2019 - LSTM receives grant to help improve health of people living in informal settlements
January 23, 2019 - Hemochromatosis Mutation Linked to Other Morbidity
January 23, 2019 - Why early diagnosis of autism should lead to early intervention
January 23, 2019 - Aspirin May Lower Stroke Risk in Women with History of Preeclampsia
January 23, 2019 - Exposure to certain chemicals may be linked to decrease in blood pressure during pregnancy
January 23, 2019 - Bowel cancer on the rise among younger Australians
January 23, 2019 - Scientists have reversed memory loss in a mouse model of Alzheimer’s
January 23, 2019 - Defective molecular master switch could lead to age-related macular degeneration
January 23, 2019 - Researchers identify how concussions may contribute to seizures
January 23, 2019 - Short interval between last meal of the day and bedtime may not affect blood glucose levels
January 23, 2019 - Still Too Many Highway Deaths Tied to Speeding
January 23, 2019 - Prenatal valproate exposure linked to increased ADHD risk
January 23, 2019 - Compound identified that may help treat heart failure
January 23, 2019 - Undiagnosed Asthma in Urban Adolescents May Be Common
January 23, 2019 - Study describes metabolism of intestinal microbiota in babies for the first time
January 22, 2019 - Study links concussions to development of epilepsy
January 22, 2019 - Specialist-led hospital bereavement service may help restrain legal action after difficult deaths
January 22, 2019 - Genetic study reveals possible new routes to treating osteoarthritis
Researchers find new method to restore movement sensation in patients with prosthetic arms

Researchers find new method to restore movement sensation in patients with prosthetic arms

image_pdfDownload PDFimage_print

A team of researchers led by Cleveland Clinic has published first-of-its-kind findings in Science Translational Medicine on a new method of restoring natural movement sensation in patients with prosthetic arms.

Led by Paul Marasco, Ph.D., the research team has successfully engineered a sense of complex hand movement in patients with upper limb amputations. This breakthrough may enhance the ability to control their prostheses, independently manage activities of daily living and improve quality of life.

“By restoring the intuitive feeling of limb movement – the sensation of opening and closing your hand – we are able to blur the lines between what the patients’ brains perceived as ‘self’ versus ‘machine’,” said Marasco, head of the Laboratory for Bionic Integration in Cleveland Clinic’s Lerner Research Institute. “These findings have important implications for improving human-machine interactions and bring us closer than ever before to providing people with amputation with complete restoration of natural arm function.”

The team used small, but powerful, robots to vibrate specific muscles to “turn on” patients’ sensation of movement, allowing them to feel that their fingers and hands were moving and that they were an integrated part of their own body. By feeling their missing hands while controlling their bionic prostheses, patients in the study could make complex grip patterns to perform specific tasks as well or better than able-bodied people.

“Decades of research has shown that muscles need to sense movement to work properly. This system basically hacks the neural circuits behind that system,” said James W. Gnadt, Ph.D., program director at the National Institute of Neurological Disorders and Stroke, part of the National Institutes of Health which partially supported the study. “This approach takes the field of prosthetic medicine to a new level which we hope will improve the lives of many.”

To improve the relationship between the mind and the prosthesis, the researchers investigated whether they could use a movement illusion to help patients better control their bionic hands. They studied six patients who had previously undergone targeted nerve reinnervation, a procedure that establishes a neural-machine interface by redirecting amputated nerves to remaining muscles. When they vibrated the patients’ reinnervated muscles to provide illusory movement, they not only felt their missing limbs move, but could use these sensations to intentionally manipulate their prostheses to accurately guide complex grips.

This is important because when an able-bodied person moves, the brain constantly receives feedback regarding the movement’s progress. This unconscious sense prevents errors in movement, like overreaching, and allows the body to make necessary adjustments. People with amputation lose this essential feedback, however, and as a result, cannot control their prostheses without having to watch them carefully at all times.

The new study shows that the sense of missing limb movement, caused by the strategic muscle vibration, provided patients with better spatial awareness and improved fine motor control without having to visually monitor the prostheses. Additionally, the movement sensation made the bionic arms feel more like “self.”

“When you make a movement and then you feel it occur, you intrinsically know that you are the author of that movement and that you have a sense of control or ‘agency’ over your actions,” said Marasco. “People who have had an amputation lose that feeling of control, which leaves them feeling frustrated and disconnected from their prosthetic limbs. The illusions we generate restore the sensation of movement and reestablish their sense of agency over their prosthetics. This helps people with amputation to feel more in control.”

Going forward, the research team is exploring ways to expand these techniques to patients who have lost a leg, as well as for those with conditions that inhibit movement sensation such as stroke. They are also working to package the system into a prosthesis for longer-term applications to enable patients to operate the system on a daily basis.

“The ultimate goal of our research is to use movement sensation to streamline the relationship between patients and their technology, to better integrate their prosthetics as a natural part of themselves,” said Marasco.

Source:

https://newsroom.clevelandclinic.org/2018/03/14/cleveland-clinic-researchers-uncover-new-way-to-restore-movement-sensation-in-patients-with-upper-limb-amputations/

Tagged with:

About author

Related Articles