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From Healthbeat:

Millions of Americans suffer from tremors. Some procedures to fix the problem involve cutting into the brain, but a non-invasive breakthrough procedure could help patients steady their lives.

BACKGROUND: A tremor is the most common of all involuntary movements that affect that hands, arm, head, face, vocal cords, and legs. A tremor consists of a somewhat rhythmic muscle movement of one or more parts of the body; most often occurring in the hands. Tremors most frequently affect middle-aged and older men and women. A tremor may indicate other neurological disorders in some people but can occur in otherwise healthy individuals. A tremor is not life-threatening but can make performing daily tasks difficult. (Source: www.medicinenet.com)

ABOUT THE NERVOUS SYSTEM: The brain is "hardwired" with connections, which are made by billions of neurons that make electricity whenever they are stimulated. The electrical patterns are called brain waves. Neurons act like the wires and gates in a computer, gathering and transmitting electrochemical signals over distances as far as several feet. The brain encodes information not by relying on single neurons, but by spreading the information across large populations of neurons, and by rapidly adapting to new circumstances. Motor neurons carry signals from the central nervous system to the muscles, skin, and glands of the body, while sensory neurons carry signals from those outer parts of the body to the central nervous system. Receptors sense things like chemicals, light, and sound and encode this information into electrochemical signals transmitted by the sensory neurons. And interneurons tie everything together by connecting the various neurons within the brain and spinal cord. The part of the brain that controls motor skills is located at the rear of the frontal lobe.

CAUSES: Tremors can be caused by; genetics, drug use, injuries, and others by unknown reasons. Commonly tremors are caused by neurological disorders, or other conditions that can produce tremors such as multiple sclerosis, stroke, traumatic brain injury, and neurodegenerative diseases that damage or destroy parts of the brainstem or the cerebellum. Tremors may be triggered by or become exaggerated when the individual is physically exhausted, during times of stress or strong emotion, or during certain postures or movements. (Source: www.medicinenet.com)

NEW TREATMENT: Traditional therapies for tremor treatment involve invasive brain surgery, but with the use of MRI's and ultrasounds neurosurgeons are using a new, non-invasive procedure on patients to help stop certain types of tremors that interfere with their everyday lives. The technique uses a combination of an ultrasound to heat up and kill the problem cells, and an MRI to allow surgeons to visualize and precisely target the affected regions of the brain. Patients most prefer this new treatment over traditional therapies for tremor treatment because the new procedure provides a scalpel-free approach to reduce and eliminate tremors.

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