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In a News and Views article in the same issue of Nature, one expert surveyed recent progress in neuroprosthetics. Stephen H. Scott, from the Centre for Neuroscience Studies at Queens University, Kingston, Ontario, Canada, said these devices will probably do more than just help patients communicate. They may also help them regain control of important bodily processes such as bladder function, he said. thinkpad

Whether this technology can actually help someone regain their ability to walk is more doubtful, Scott said. Are they going to be able to run an electric wheelchair I think they could do that. It s possible they could drive a car. Getting them to walk is harder, he said. More information Find out more about paralysis at the Christopher and Dana Reeve Paralysis Resource Center. microsoft

SOURCES: Leigh Hochberg, M.D., Ph.D., neurologist, Massachusetts General Hospital, Boston; Krishna Shenoy, Ph.D., assistant professor, electrical engineering and neuroscience, Stanford University, Stanford, Calif.; Stephen H. Scott, Ph.D., professor, department of anatomy and cell biology, and member, Centre for Neuroscience Studies, Queens University, Kingston, Ontario, Canada; Bijan Pesaran, Ph.D., assistant professor, neural science, New York University Center for Neural Science, New York City; July 13, 2006, Nature laptop computers

Aphasia: A Virtual Prison That Can Be Escaped Aphasia A Virtual Prison Brain, Speeding, Neurology DentalPlans.com

Dental Health Articles Neurology Aphasia A Virtual Prison laptop computer

Aphasia: A Virtual Prison That Can Be Escaped

Brain disorder can leave patients unable to communicate By Dennis Thompson HealthDay Reporter Updated: 4/26/2007 3:31:22 PM Print Article Email Article desktop computer

THURSDAY, June 13 (HealthDay News) -- You re like a prisoner in your own mind: People talk, but you can t understand a word they re saying, even though they seem to get what you re telling them. Or you can comprehend what someone is telling you, but when you try to respond, nothing but gibberish escapes your mouth. Or nothing that s written makes sense to you. Or, if it does, you can t write anything yourself that s intelligible. notebooks

This nightmarish scenario is the language disorder called aphasia, a devastating condition that can take several forms, robbing patients of their ability to either speak or comprehend or -- in worst cases -- both. lenovo

Nearly one million Americans -- about one in 300 people -- suffer from aphasia, according to the National Aphasia Foundation, a nonprofit group dedicated to educating the public about the disorder. Aphasia is more common than Parkinson s disease, cerebral palsy or muscular dystrophy. Despite that, most people have never heard of the disorder or understand its symptoms. hard drive

Aphasia results from damage to the brain s language centers, typically found in the left hemisphere, according to the National Institutes of Health. There is no known cure. About three-quarters of aphasia cases occur due to stroke, said Dr. Martha Taylor Sarno, professor of rehabilitation medicine at New York University School of Medicine. The disorder can also be triggered by blows to the head, brain tumors, brain infections, and other conditions of the brain. travelstar

The effects vary from person to person, she said. Aphasia comes in so many different configurations, added Sarno, who s also director of the Speech-Language Pathology Department at the Rusk Institute of Rehabilitation Medicine in New York City. One person might have all comprehension gone but can communicate. Others can communicate but don t understand a thing. It all changes depending on where the damage is in the brain, she said. gateway

The National Aphasia Association divides the condition into two broad categories -- fluent and nonfluent aphasia. People with fluent aphasia have trouble understanding spoken and written language, while people with nonfluent aphasia have problems communicating orally and in writing. The association categorizes some specific types of aphasia, including: laptop parts

• Global aphasia, the most severe form of the disorder, in which the patient can produce few recognizable words and understands little or no spoken language. They can neither read nor write. This form is often seen immediately after a person suffers a stroke, but if the damage is not too extensive, they will regain all their language capability or suffer a less severe type of aphasia. But if the brain damage is severe, the disability may last a lifetime. software

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Dopamine is a neurotransmitter associated with the pleasure system of the brain, providing feelings of enjoyment from certain activities. Dopamine is released by naturally rewarding experiences such as food, sex and the use of certain drugs. electronics

In the study, mice that lacked the Clock gene were injected with cocaine. Not only did the mice experience problems with their circadian cycles - not sleeping as much and becoming more hyperactive - they also found cocaine more rewarding than control mice, demonstrated by their strong preference for the location where the drug was administered. canon

In addition, Clock-deficient mice produced more dopamine than control mice did, suggesting that the gene controlling circadian rhythms is a key regulator of the brain s reward system and may influence the addictive properties of drugs such as cocaine. desktop pc

We tracked dopamine cells in the mice brains and found that these cells fired more rapidly and showed a pattern called bursting, which leads to an usually large dopamine release, Dr. McClung said. We also found that more dopamine is produced and released in these mice under normal conditions and particularly after exposure to cocaine. desktop computers

Dr. Eric Nestler, chairman of psychiatry at UT Southwestern and the study s senior author, said the results suggest there may be a link in disruption of circadian rhythms and the tendency to abuse drugs. think pad

Most work on Clock has focused on the brain s master pacemaker, located in a brain area called the suprachiasmatic nucleus, said Dr. Nestler. The novelty of Dr. McClung s findings is the role Clock plays in brain reward pathways. The next step is to examine Clock and related genes in human addicts. repair

Dr. Donald Cooper, assistant professor of psychiatry at UT Southwestern, also contributed to the study, as did researchers from the University of Crete in Heraklion; the Rosalind Franklin University of Medicine and Science in North Chicago; and the Howard Hughes Medical Institute at Northwestern University. data recovery

The study was supported by grants from the National Institute on Drug Abuse, the National Institute of Mental Health and the Onassis Public Benefit Foundation. 2005 HealthNewsDigest.com Enter your ZIP code to compare the savings and benefits offered by the discount dental plans in your area. Take the first step toward a healthier smile and start saving today! Find my dentist cisco

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New Technique to Mass-Produce Human Papillomavirus May Lead to Gains Against Cervical Cancer

Human Papillomavirus Research Updated: 6/21/2005 10:25:03 AM Print Article Email Article Researchers may be on the verge of exploiting the vulnerabilities of a virus that causes cervical cancer, thanks to a newly developed technique that enables scientists to mass-produce human papillomavirus (HPV) in the laboratory. desktop

HPV, which exists in more than 100 forms, is the most prevalent sexually transmitted infection. Transmission of HPV can also occur non-sexually. According to the Centers for Disease Control and Prevention, approximately 20 million people in the United States are currently infected with HPV. At least 50 percent of sexually active men and women will acquire genital HPV infection at some point in their lives. infosys

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