Research may help explain how human brain governs speech
In an article in the current issue of Nature, neuroscientist Daniel Margoliash and colleagues show, for the first time, how the brain is organized to govern skilled performance—a finding that may lead to new ways of understanding human speech production. (more…)
Study suggests potential new target in fight against debilitating disease
For several years, neurologists at UCLA have been building a case that a link exists between pesticides and Parkinson’s disease. To date, paraquat, maneb and ziram — common chemicals sprayed in California’s Central Valley and elsewhere — have been tied to increases in the disease, not only among farmworkers but in individuals who simply lived or worked near fields and likely inhaled drifting particles.
Now, UCLA researchers have discovered a link between Parkinson’s and another pesticide, benomyl, whose toxicological effects still linger some 10 years after the chemical was banned by the U.S. Environmental Protection Agency. (more…)
Discovery may hold key to restoring speech after paralysis
Diagnosed with Lou Gehrig’s disease at 21, British physicist Stephen Hawking, now 70, relies on a computerized device to speak. Engineers are investigating the use of brainwaves to create a new form of communication for Hawking and other people suffering from paralysis.
—Daily Mail (U.K.)
Scientists at UCLA and the Technion, Israel’s Institute of Technology, have unraveled how our brain cells encode the pronunciation of individual vowels in speech.
Published in the Aug. 21 edition of the journal Nature Communications, the discovery could lead to new technology that verbalizes the unspoken words of people paralyzed by injury or disease. (more…)
*UCLA scientists identify 2,000 important genes*
Can the song of a small bird provide valuable insights into human stuttering and speech-related disorders and conditions, including autism and stroke? New research by UCLA life scientists and colleagues provides reason for optimism.
The scientists discovered that some 2,000 genes in a region of the male zebra finch’s brain known as “Area X” are significantly linked to singing. More than 1,500 genes in this region, a critical part of the bird’s song circuitry, are being reported for the first time. Previously, a group of scientists including the UCLA team had identified some 400 genes in Area X. All the genes’ levels of expression change when the bird sings. (more…)
*Research into aphasia – the inability to speak or write well-formulated sentences and words – is strong at the UA. Researchers have received $2 million toward the study of the condition.*
The National Institutes of Health have awarded the University of Arizona’s Aphasia Research Project in the department of speech, language and hearing sciences a $2 million grant to research communication impairments in adults who have suffered brain injury.
Aphasia – the inability to speak or write well-formulated sentences and words – is a common result of a stroke or a traumatic brain injury such as the one suffered by Rep. Gabrielle Giffords, who was shot in the head earlier this year. The bullet damaged regions of the brain that are critical for language and control of the right side of the body. (more…)
Nothing seems more automatic than speech. We produce an estimated 150 words a minute, and make a mistake only about once every 1,000 words. We stay on track, saying what we intend to, even when other words distract us—from the radio, say, or a road sign we pass while driving.
An upcoming study in Psychological Science, a journal of the Association for Psychological Science, shows for the first time why we so rarely speak those irrelevant words: We have a “verbal self-monitor” between the mental production of speech and the actual uttering of words that catches any irrelevant items coming from outside of the speaker. (more…)
