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Can brain-injured, partially-blind stroke patients regain some of their lost vision?
September 05, 2007Research published by SAGE in Neurorehabilitation & Neural Repair
Is it possible to offer hope for stroke patients who've lose part of their vision? A study published by SAGE in the journal Neurorehabilitation & Neural Repair explores that question.
The researchers studied visual restoration therapy for stroke patients, hypothesizing that the training would induce specific changes in the brain's response to stimuli, something demonstrated in animal experiments but never in humans with brain injury. The home-based therapy used repetitive stimulation of the zones adjacent to the blind area to modestly enlarge the field of vision of patients who had lost the ability to see off to the left or right in each eye.
"Our goal in this study was to determine whether therapy would produce a unique alteration in the brain's response to stimuli in the trained border-zone location compared with the non-trained portion of the seeing field," write the authors in the article. They concluded that, "visual restoration therapy seems to alter brain activity. Demonstration of a visual field-specific training effect on brain activity provides an important starting point for understanding the potential for visual therapy in partially-blind stroke patients."
SAGE Publications
"Our goal in this study was to determine whether therapy would produce a unique alteration in the brain's response to stimuli in the trained border-zone location compared with the non-trained portion of the seeing field," write the authors in the article. They concluded that, "visual restoration therapy seems to alter brain activity. Demonstration of a visual field-specific training effect on brain activity provides an important starting point for understanding the potential for visual therapy in partially-blind stroke patients."
SAGE Publications
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A study is under way at Rush University Medical Center using a small, soft-patch device made of a Gore-tex-type material - often used to make durable outerwear - to close a common hole found in the heart called a patent foramen ovale (PFO) in order to prevent recurrent strokes and transient ischemic attacks (TIAs) in adults.
WVU study demonstrates efficacy of CT perfusion in diagnosis of acute ischemic stroke
A study conducted by a team of stroke experts from West Virginia University Health Sciences Center demonstrates that CT (computed tomography) perfusion imaging - a technology which measures blood flow and is available to most hospitals - may dramatically improve fast and accurate stroke diagnosis, enabling physicians to provide more targeted care and helping avoid potentially life-threatening complications of "clot buster" therapy.
New hope for stroke patients
If a stroke patient doesn't get treatment within approximately the first three hours of symptoms, there's not much doctors can do to limit damage to the brain.
Telemedicine leads to better stroke treatment decisions
Researchers at the University of California, San Diego Medical Center say that their first-of-its-kind study of a telemedicine program which transports stroke specialists via computer desktop or even laptop to the patient's bedside, using highly sophisticated video, audio and Internet technology, could have an immediate and profound impact on the treatment of stroke patients throughout the world.
Leukemia drug could save lives of stroke patients
The drug tPA is the most effective treatment currently available for stroke patients, but its safety is limited to use within the first three hours following the onset of symptoms.
New 3-D ultrasound could improve stroke diagnosis, care
Using 3-D ultrasound technology they designed, Duke University bioengineers can compensate for the thickness and unevenness of the skull to see in real-time the arteries within the brain that most often clog up and cause strokes.
Many Stroke, Heart Attack Patients May Not Benefit from Aspirin
Up to 20 percent of patients taking aspirin to lower the risk of suffering a second cerebrovascular event do not have an antiplatelet response from aspirin, the effect thought to produce the protective effect, researchers at the University at Buffalo have shown.
Adult brain can change, study confirms
It is well established that a child's brain has a remarkable capacity for change, but controversy continues about the extent to which such plasticity exists in the adult human primary sensory cortex.
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