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Upper limb paralysis following stroke is a very common problem. Only 30% of stroke patients who suffer from upper limb paresis experience a full recovery of function. There is a need for the development of more efficient rehabilitation methods for the improvement of the paralysed upper limb function.
It has been shown that the use of mirror therapy after a stroke induces the activation of motor, sensory and associative regions in the affected hemisphere and is associated with an improvement in the function of the affected limb. Mirror therapy is a treatment modality in which the affected arm is hidden from the patient's sight; the patient is instructed to watch the reflection of his healthy hand on a mirror while he performs movements with his healthy hand and tries to move simultaneously his affected hand. This induces the illusion that his affected hand moves well.
It has also been shown that applying vibration to a muscle tendon at frequencies between 50-100 Hz induces an illusion of elongation of the vibrated muscle, if visual feedback is prevented. For instance, vibrating the triceps will induce a strong illusion of elbow flexion.
In the present study the investigators will couple the use of a mirror with the application of vibration to tendons, in order to obtain a multisensorial and strong illusion of movement in the paralyzed limb.
The study hypothesis is that the administration of mirror therapy together with vibration will induce the activation of multiple motor, sensory and associative areas in the affected brain hemisphere, resulting in improvement of the affected upper limb function, compared to the administration of mirror therapy alone or sham therapy.
Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Outcomes Assessor), Primary Purpose: Treatment
Vibration and Mirror, Mirror therapy, no mirror, sham vibration
Hadassah University Hospital
Not yet recruiting
Hadassah Medical Organization
Published on BioPortfolio: 2014-08-27T03:18:04-0400
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Neurons that fire when an animal acts or observes the same action of another thus coding the motor response. They were originally discovered in the premotor and parietal cortex of the monkey and studies have shown that neurons that have a similar mechanism are present in humans. Mirror neurons are theorized to be related to social cognition.
An imaging method using LASERS that is used for mapping subsurface structure. When a reflective site in the sample is at the same optical path length (coherence) as the reference mirror, the detector observes interference fringes.
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The science and application of a double-beam transmission interference microscope in which the illuminating light beam is split into two paths. One beam passes through the specimen while the other beam reflects off a reference mirror before joining and interfering with the other. The observed optical path difference between the two beams can be measured and used to discriminate minute differences in thickness and refraction of non-stained transparent specimens, such as living cells in culture.
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