New Hope for Stroke Survivors
by Lauren Whisenhunt
CBS 42 News
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For many stroke patients, functions that aren't relearned in the first few months after their stroke are nearly impossible to get back. Regaining motor skills is a frustrating process that makes even the simple things in life often times difficult. A simple task like putting on socks or getting dressed may be challenging.
Mechanical Engineer Marcia O'malley is determined to help stroke patients continue on their road to recovery, no matter how far out they are.
She believes that if therapy continues to be delivered, that stroke patients will continue to see improvement.
Using the same technology found in video game controllers, she's using a technology called Haptics, which relies on the perception of touch, allowing patients to feel their environment while being guided through correct movements.
Repetitive practice can improve outcomes for rehabilitation, and robots are really well suited to do just that. By repeating exercises over and over, patients regain motion. Some patients are even able to get results even years after their stroke.
This joystick therapy could be in high demand, but that's something O'malley and her team has already thought about. This robotic device might enable one therapist to oversee numerous patients at the same time.
This joystick technology can also potentially be used by patients at home, allowing them to continue rehab on their own schedule.
ABOUT STROKES: Stroke is a type of cardiovascular disease that affects the arteries leading to and from the brain. When one of these becomes blocked, or bursts, blood and oxygen can't get to that part of the brain and it begins to die. Strokes can cause paralysis, affect language and vision and lead to memory loss. Strokes kill nearly 163,000 people every year. It is the third leading cause of death, behind heart disease and cancer.
ABOUT MOTOR FUNCTION: Even a simple motor movement involves many different regions of the body, but the primary motor cortex of the brain is one of the most important. It sends out electrical impulses through nerve cells called neurons that control the execution of movement. Every part of the body is represented in the primary motor cortex; the left side of the brain controls the right side of the body, and vice versa. Certain diseases or brain damage can disrupt these basic functions. For instance, cerebral palsy is a disorder that affects body movement and muscle coordination because of brain damage, which interferes with messages from the brain, the body and vice versa.
WHAT IS VIRTUAL REALITY: The term "virtual reality" is often used to describe interactive software programs in which the user responds to visual and hearing cues as he or she navigates a 3-D environment on a graphics monitor; but originally, it referred to total virtual environments, in which the user would be immersed in an artificial, three-dimensional computer-generated world, involving not just sight and sound, but also touch. Devices that simulate the touch experience are called haptic devices. Touch is vital to direct and guide human movement. The use of haptics in virtual environments simulates how objects and actions feel to the user. The user has a variety of input devices to navigate that world and interact with virtual objects, all of which must be linked together with the rest of the system to produce a fully immersive experience.
On The Web:
http://medgadget.com/archives/2007/12/cheap_technology_for_better_stroke_rehab.html
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