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Science News for April 15, 2004


Following complex motions

A new study provides support for the ancient origin of the MT visual center in primates, suggesting it evolved early in primate evolution. The researchers used optical imaging to analyze the brain structure of a small nocturnal primate called the galago and found similarities with monkey brains.

SourceVanderbilt University·JournalProceedings of the National Academy of Sciences·DateApr 15, 2004

Brain areas identified that 'decode' emotions of others

Researchers have identified two specific brain areas activated when people make mental state judgments, shedding light on the neural basis of everyday theory of mind. This finding may help develop interventions for individuals with autism who struggle with social skills and mental state decoding.

SourceQueen's University·JournalJournal of Cognitive Neuroscience·DateApr 15, 2004

UCLA study shows Medicaid costs can shrink

A UCLA study found that providing Head Start parents with easy-to-understand health-care guidance can lead to significant reductions in emergency room and clinic visits, resulting in cost savings for Medicaid. The study showed a 48% reduction in unnecessary ER visits and a 37.5% decrease in clinic visits for routine illnesses.

SourceUniversity of California - Los Angeles·JournalJournal of Community Health·DateApr 15, 2004

SAGE-acious prediction of thyroid carcinoma

Researchers developed a preoperative diagnostic test that uses gene expression to distinguish between benign and malignant thyroid carcinoma. The test has the potential to improve diagnosis accuracy and treatment outcomes for patients with thyroid cancer.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateApr 15, 2004

Gulf marine reserves given new life

The Madison/Swanson and Steamboat Lumps marine reserves in the Gulf of Mexico have been given a new life after a two-year extension. Larger fish with greater egg-producing potential were found within the protected sites than outside them, indicating the reserves are working as designed.

Physical beauty involves more than good looks

Research suggests that non-physical traits, such as personality and behavior, have a substantial impact on how people perceive physical attractiveness. Studies involving familiar and stranger participants found that non-physical traits known only to familiars had a large effect on perception of physical attractiveness.

SourceUniversity of Wisconsin-Madison·JournalEvolution and Human Behavior·DateApr 15, 2004

Phytoplankton may stimulate uptake of CO2

Phytoplankton, tiny aquatic plants that convert carbon dioxide through photosynthesis, may play a crucial role in regulating Earth's atmosphere. A new study finds that iron fertilization can enhance the uptake of CO2 by phytoplankton, potentially making them more efficient carbon sinks.

SourceOregon State University·JournalScience·DateApr 15, 2004