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“Just as an infant knows to tune into her mother’s voice, an adolescent knows to tune into novel voices,” said lead study author Daniel Abrams, PhD, clinical associate professor of psychiatry and behavioral sciences. “As a teen, you don’t know you’re doing this. You’re just being you: You’ve got your friends and new companions and you want to spend time with them. Your mind is increasingly sensitive to and attracted to these unfamiliar voices.” In some ways, teens’ brains are more receptive to all voices — including their mothers’ — than the brains of children under 12, the researchers discovered, a finding that lines up with teenagers’ increased interest in many types of social signals. more »

In a new paper appearing in the current issue of the journal Acta Palaeontologia Polonica, paleontologist Kevin Padian floats a new hypothesis: The T. rex’s arms shrank in length to prevent accidental or intentional amputation when a pack of T. rexes descended on a carcass with their massive heads and bone-crushing teeth. A 45-foot-long T. rex, for example, might have had a 5-foot-long skull, but arms only 3 feet long — the equivalent of a 6-foot human with 5-inch arms. “What if several adult tyrannosaurs converged on a carcass? You have a bunch of massive skulls, with incredibly powerful jaws and teeth, ripping and chomping down flesh and bone right next to you. What if your friend there thinks you’re getting a little too close? They might warn you away by severing your arm,” said Padian, distinguished emeritus professor of integrative biology at the University of California, Berkeley, and a curator at the UC Museum of Paleontology (UCMP). “So, it could be a benefit to reduce the forelimbs, since you’re not using them in predation anyway.” more »

"The sense of the House of Representatives that corporations should commit to utilizing the benefits of gender diversity in boards of directors and other senior management positions; A bill to exclude a basic allowance for housing from income for purposes of eligibility for the Supplemental Nutrition Assistance Program (SNAP); A bill to address the disparate impact of climate change on women and support the efforts of women globally to address climate change; resolution recognizing Girl Scouts of the United States of America on its 110th birthday and celebrating its legacy of providing girls with a safe, inclusive space while supporting the next generation of women leaders; A bill to support stillbirth prevention and research; Budget - On Wednesday, the House Budget Committee will hold a hearing, “Ensuring Women Can Thrive in a Post-Pandemic Economy.”     more »

This study, led by Ueli Rutishauser, Ph.D., professor of neurosurgery, neurology and biomedical sciences at Cedars-Sinai Medical Center in Los Angeles, started with a deceptively simple question: how does our brain form and organize memories? We live our awake lives as one continuous experience, but it is believed based on human behavior studies, that we store these life events as individual, distinct moments. What marks the beginning and end of a memory? This theory is referred to as “event segmentation,” and we know relatively little about how the process works in the human brain. To study this, Rutishauser and his colleagues worked with 20 patients who were undergoing intracranial recording of brain activity to guide surgery for treatment of their drug-resistant epilepsy. more »