We are not all equal when it comes to brain aging: while some people manage to maintain well-preserved cognitive function into old age, others do not (Nyberg et al., 2012). Brain-imaging studies have attempted to capture brain aging by exploring age-related changes to specific structures and different kinds of brain tissue (Good et al., 2001; Walhovd et al., 2005). But a more recent approach has been to use one or more brain-imaging techniques to define a global, single brain-age for each individual (Franke et al.
Researchers investigating how temperament shapes adult life-course outcomes have found that behavioral inhibition in infancy predicts a reserved, introverted personality at age 26. For those individuals who show sensitivity to making errors in adolescence, the findings indicated a higher risk for internalizing disorders (such as anxiety and depression) in adulthood. The study provides robust evidence of the impact of infant temperament on adult outcomes. “While many studies link early childhood behavior to risk for psychopathology, the findings in our study are unique.
A group of nerve cells in the brains of mice promotes the consumption of high-fat food, researchers at the Max Planck Institute for Metabolism Research in Cologne have discovered. If these so-called nociceptin neurons in the hypothalamus are activated, the animals start to eat more. “Just three days of a high-fat diet feeding were sufficient to detect increased activity of nociceptin neurons in a specific region of the brain, the arcuate nucleus of the hypothalamus," says Alexander Jais, first author of the study.
Signs of autoimmunity can appear in Parkinson’s disease patients years before their official diagnosis, a new study co-led by scientists at the La Jolla Institute for Immunology (LJI) reports. The work adds to increasing evidence that Parkinson’s disease is partly an autoimmune disease. The research could make it possible to someday detect Parkinson’s disease before the onset of debilitating motor symptoms - and potentially intervene with therapies to slow the disease progression.
Lowered inhibition found in one study of concussion sufferers were mirrored in separate tests on Canadian university football players. The findings open new doors to predicting the impact of the often debilitating injury, as well as raise questions about the long-term impact of contact sports, according to researchers. Led by graduate student Clara Stafford, the Owen Lab at University of Western Ontario analyzed results of 12 cognitive tests from an online survey of nearly 20,000 people in the general population.
New research combines genetics and functional brain imaging to find that both genetic and neural factors influence attention-deficit/hyperactivity disorder (ADHD) diagnosis. Genetic studies of attention-deficit/hyperactivity disorder (ADHD) show that it takes many common genetic variations combining together in one individual to increase risk substantially. At the same time, neuroimaging experts have found differences in how the brains of people diagnosed with ADHD are functionally connected. However it’s unclear how genetic risk might be directly related to altered brain circuitry in individuals diagnosed with ADHD.
Amid the global spread of COVID-19 we are witnessing an increased focus on gathering food and supplies. We’ve seen images of supermarket shelves emptied of basics such as toilet paper, pasta, and tinned foods. Messages to reassure people there would be continued supply of provisions has done little to ease public anxiety. Panic buying and stockpiling are likely responses to heightened anxiety, fear and uncertainty about the future. COVID-19 poses an imminent threat.
University of North Carolina scientists have conducted the largest-ever whole genome sequencing study of schizophrenia to provide a more complete picture of the role the human genome plays in this disease. “Our results suggest that ultra-rare structural variants that affect the boundaries of a specific genome structure increase risk for schizophrenia. Alterations in these boundaries may lead to dysregulation of gene expression, and we think future mechanistic studies could determine the precise functional effects these variants have on biology," said senior author Jin Szatkiewicz, Ph.