New research provides evidence that high intensity interval training improves metabolism in a brain structure responsible for memory formation and retention. The study, published in Psychophysiology, found increased metabolism in the left hippocampus following a 6-month physical activity intervention for adolescents.
“The primary focus of my research is the design, evaluation, and dissemination of school-based physical activity interventions,” said David Lubans, a professor at the University of Newcastle and the corresponding author of the study.
“My secondary area of interest is studying the effects and mechanisms of physical activity on young people’s mental health and cognition. I have found that providing evidence for the benefits of physical activity for academic outcomes, including test performance, cognitive function and on-task behavior in the classroom provides a strong impetus for schools to provide additional activity for young people.”
It was thought that spongy bone in woodpeckers’ heads cushioned their brains from hard knocks, but in fact their skulls are stiff like a hammer.
Hibernation Biology & Applications In Human Health & Resilience — Dr. Dana K. Merriman, Ph.D., Distinguished Professor Emerita of Biology; Director of the Squirrel Colony, UW-Oshkosh.
Dr. Dana K. Merriman Ph.D. (www.uwosh.edu/facstaff/merriman/VaughanHome), is Distinguished Professor Emerita of Biology, and Director of the Squirrel Colony, at University of Wisconsin Oshkosh, and Adjunct Professor of Ophthalmology & Visual Sciences, Medical College of Wisconsin.
With her BA in Biological Science and her PhD in Physiology and Cell Biology, both from University of California-Santa Barbara, as well as having spent time as a Postdoctoral Fellow at University of Utah Health Sciences Center, a core focus of Dr. Merriman’s laboratory research over the years has been the development of a captive breeding colony of the 13-lined ground squirrels.
This unique, one-of-a-kind captive breeding program, due to this species very unique cone-dominant, diurnal visual system, as well as their impressive physiological ability to survive in hibernation for over six months without food or water, has served investigators with animals and custom-dissected tissues from the US, Asia, and Europe for decades, as well as been core to Dr Merriman’s own work on vision, including cone cell biology and retinal function during the metabolic state transitions associated with hibernation.
Over the years, Dr. Merriman expanded her research horizon well outside of vision, into neuroscience, and in recent years she has collaborated on studies of muscle physiology, viral genomics, molecular biology of transposable elements, and comparative genetics of the control of coat patterning.
A new study has identified neuroplastic changes in brain structure that accompany attention bias modification training in highly anxious individuals. The findings, which appear in the journal Biological Psychology, shed light on the mechanisms underlying the efficacy of the treatment.
Research has demonstrated that the brain prioritizes threating information over non-threatening information. But in highly anxious individuals, this attentional bias can become exaggerated and detrimental. The authors of the new study sought to better understand the changes in brain structure that result from attention bias modification, an intervention that seeks to systematically train attention away from threatening stimuli and toward neutral stimuli.
“Our lab has had a longstanding interest in understanding the behavioral and neural mechanisms of affective attention and attentional bias to affective information,” said study authors Josh Carlson and Lin Fang of the Cognitive x Affective Behavior & Integrated Neuroscience (CABIN) Lab at Northern Michigan University.
