September 13, 2012 |
Inside the human skull lies a 3-pound mystery. The brain - a command center composed of tens of billions of branching neurons - controls who we are, what we do and how we feel. "It's the most amazing information structure anybody has ever been able to imagine," says Dr. Walter Koroshetz, deputy director of the National Institute of Neurological Disorders and Stroke in Bethesda, Md. For centuries, the brain's inner workings remained largely unexplored. But all that is changing.
November 5, 2012 |
Researchers have moved one step closer to understanding how anesthesia drugs work by identifying a component of brain activity that could explain why we lose consciousness under the influence of the drugs, according to a study published Monday in the Proceedings of the National Academy of Sciences. Though "going under" is an extremely common part of many medical procedures, the mechanism by which it works remains a mystery. This fact has practical ramifications: Some studies have shown that anesthesia can lead to loss of memory and other side effects, something researchers might be able to alleviate if they understand exactly what the drugs do in the body.
April 19, 2012 |
In some ways, parties seem like the worst possible places to socialize. A cacophony of voices -- not to mention a blaring stereo system -- make for a noisy environment in which to hear what a friend is saying. Hence the term "the cocktail-party effect," which refers to people's ability to focus on one speaker and tune out another. Now Nima Mesgarani and Edward F. Chang of UC San Francisco have figured out how the brain accomplishes this feat of selective hearing: The auditory cortex, which processes sounds, favors the voice that it needs or wants to hear.
CALIFORNIA | LOCAL
August 7, 1991
A UC Irvine scientist has won a $165,000 grant to help develop a revolutionary technique for mapping brain activity, university officials announced. Ron Frostig, an assistant professor of psychobiology at UCI, received the award recently from the Arnold and Mabel Beckman Foundation. He plans to use the funds to continue research into the way various parts of the brain reflect light.
November 15, 2012 |
In an unlikely pairing, two professional rappers have teamed up with researchers from the National Institutes of Health to study what happens in the brain during freestyle rapping. The results, published Thursday in the journal Scientific Reports , suggest that the process is similar to that of other spontaneous creative acts, including jazz improvisation. The study was initiated by the Los Angeles-based rappers Daniel Rizik-Baer and Michael Eagle and carried out by Allen Braun and Siyuan Liu of the NIH's National Institute on Deafness and Other Communication Disorders.
December 30, 2010 |
Anesthesia doesn't put patients to "sleep," as they're often told. Rather, anesthesia puts the brain into a state of unconsciousness that's more like being in a reversible coma than being asleep, a new study says. The study published in the New England Journal of Medicine on Thursday looked at how the brain behaves while asleep, in a coma and under general anesthesia. The brain activity of an anesthetized patient, for example, was more like a deeply unconscious coma patient than someone sleeping.
June 22, 2012 |
Does depth perception develop in humans as a result of nature or nurture? It's a question scientists have wondered about. And a new study comes to a surprising conclusion: Babies acquire binocular vision as a result of viewing the world around them, not merely thanks to genetic programming. "My guess was that it was going to be something in between nature and nurture," said study leader Ilona Kovacs, a psychologist at the Budapest University of Technology and Economics in Hungary.
March 21, 1986
Imprisoned financier Michele Sindona, who was once known as "God's Banker" because of his ties with the Vatican, was reported in a deep coma and near death, two days after being sentenced to a life term for ordering a murder. Sindona, 65, was taken ill as he ate breakfast at a prison in Voghera, Italy. He was reported to have been in a coma on arrival at a nearby hospital, where tests indicated no brain activity.