Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Imagining movement of affected limbs aids stroke rehabilitation

08.10.2003


Imagining movement of arms and legs that have been weakened from stroke may facilitate functional recovery of affected limbs, a Northwestern University study has found.



The effects of stroke vary, based on the type of stroke and its severity and location in the brain. The majority of strokes affect one of the brain’s hemispheres, resulting in muscle weakness or paralysis on the opposite side of the body -- a condition known as hemiparesis.

Jennifer A. Stevens and co-researchers at the Feinberg School of Medicine and the Rehabilitation Institute of Chicago used a motor imagery training program for patients with hemiparesis, consisting of imagined wrist movements and mental simulations of reaching and object manipulation making use of a mirror-box apparatus.


An article describing their study appeared in a recent issue of Archives of Physical Medicine and Rehabilitation. The intervention targets the cognitive level of action processing, while its effects may be realized in overt behavioral performance, said Stevens, research assistant professor of physical medicine and rehabilitation at the Feinberg School.

"Actions generated using motor imagery adhere to the same movement rules and constraints that physical movements follow, and the neural network involved in motor imagery and motor execution overlap in areas of the brain concerned with movement," said Stevens. The program consisted of three one-hour sessions for four consecutive weeks. The first task was computer-facilitated motor imagery training, during which time the participant was instructed to explicitly imagine his/her own hand completing a movement just observed on a computer screen.

For the second task, simulating, for example, the left arm moving, the investigators had the participant move the right arm around in the mirror-box workspace, resulting in a reflection of the affected left limb moving about successfully in space. Participants were instructed to "imagine the reflected limb actually is your limb moving about."

Results showed that performance of the affected limb improved after the imagery intervention, indicated by increases in assessment scores and functionality and decreases in movement times.

Stevens and colleagues found that the greatest increases in function generally occurred during the month of intervention, suggesting that the behavioral effects were associated with the actual practice of mental simulation. It also is possible that motor simulation therapy in early stages of recovery -- that is, less than six months -- may increase the degree of this effect, Stevens said.

Elizabeth Crown | EurekAlert!
Further information:
http://www.nwu.edu/

More articles from Health and Medicine:

nachricht Cholesterol-lowering drugs may fight infectious disease
22.08.2017 | Duke University

nachricht Once invincible superbug squashed by 'superteam' of antibiotics
22.08.2017 | University at Buffalo

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Fizzy soda water could be key to clean manufacture of flat wonder material: Graphene

Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.

As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

What the world's tiniest 'monster truck' reveals

23.08.2017 | Life Sciences

Treating arthritis with algae

23.08.2017 | Life Sciences

Witnessing turbulent motion in the atmosphere of a distant star

23.08.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>