ScienceDaily: Mind & Brain News |
| When fawns perceive constant danger from many sources, they almost seem to relax Posted: 15 Jul 2021 12:38 PM PDT Burnout. It is a syndrome that is said to afflict humans who feel chronic stress. But after conducting a novel study using trail cameras showing the interactions between white-tailed deer fawns and predators, a researcher suggests that prey animals feel it, too. |
| Red blood cell 'traffic' contributes to changes in brain oxygenation Posted: 15 Jul 2021 11:23 AM PDT Adequate blood flow supplies the brain with oxygen and nutrients, but the oxygenation tends to fluctuate in a distinct, consistent manner. The root of this varied activity, though, is poorly understood. Now, researchers have identified one cause of the fluctuations: inherent randomness in the flow rate of red blood cells through tiny blood vessels called capillaries. |
| Posted: 15 Jul 2021 09:46 AM PDT The latest investigations into a promising new genetic test for glaucoma - the leading cause of blindness worldwide - has found it has the ability to identify 15 times more people at high risk of glaucoma than an existing genetic test. |
| What does the sleeping brain think about? Posted: 15 Jul 2021 09:45 AM PDT Using an artificial intelligence approach capable of decoding brain activity during sleep, scientists were able to glimpse what we think about when we are asleep. By combining fMRI and EEG, they provide unprecedented evidence that the work of sorting out the thousands of pieces of information processed during the day takes place during deep sleep. Indeed, the brain can evaluate all of these memories in order to retain only the most useful ones. |
| Biomolecular bonsai: Controlling the pruning and strengthening of neuron branches Posted: 15 Jul 2021 07:30 AM PDT How neuronal circuits remodel themselves over time, especially during early development, is a major question in neurobiology. Using mice, researchers have uncovered a biomolecular mechanism behind the strengthening of connections from neurons called mitral cells. The team found that the protein BMPR-2 is a key regulator of selective stabilization of neuron branching and that strengthening of a branch happens only when neural signals are transmitted. |
| Study highlights how resilience is dynamic, not a static character trait Posted: 15 Jul 2021 07:30 AM PDT A new study finds resilience is a dynamic process, rather than a fixed trait - and suggests this may have significant ramifications for the business world. |
| Spending time outdoors has positive effect on our brains Posted: 15 Jul 2021 07:30 AM PDT If you're regularly out in the fresh air, you're doing something good for both your brain and your well-being. |
| Posted: 15 Jul 2021 06:08 AM PDT Scientists have opened the door to improved treatment of brain dysfunction which causes psychosis. |
| Posted: 15 Jul 2021 06:08 AM PDT If you didn't have a brain, could you still navigate your surroundings? Thanks to new research on slime molds, the answer may be 'yes.' Scientists discovered that the brainless Physarum polycephalum uses its body to sense mechanical cues in its environment, and decides where to grow based on that information. This finding provides a model for understanding different types of cognition, including our own. |
| Study shows strong association between perceived risk, availability and past-year cannabis use Posted: 15 Jul 2021 06:08 AM PDT Combined perceptions of the risk and availability of cannabis influence the risk of cannabis use more than perceived risk and perceived availability alone, according to a new study. Researchers observed that those who perceived cannabis as low-risk and available were more likely to report using the drug in the past year and almost daily compared to those individuals who perceived cannabis as high-risk and unavailable. This is the first study to consider the joint effects of perceived risk and perceived availability. |
| New study suggests benefit-to-harm balance of statins for healthy adults 'generally favorable' Posted: 14 Jul 2021 03:34 PM PDT Statins are associated with a small increased risk of side effects in patients without a history of heart disease, but these effects are mild compared with the potential benefits of treatment in preventing major cardiovascular events, say researchers. |
| Think about this: Keeping your brain active may delay Alzheimer's dementia 5 years Posted: 14 Jul 2021 02:01 PM PDT Keeping your brain active in old age has always been a smart idea, but a new study suggests that reading, writing letters and playing card games or puzzles in later life may delay the onset of Alzheimer's dementia by up to five years. |
| Adult children with college degrees influence parents' health in later life Posted: 14 Jul 2021 12:12 PM PDT Having no children who completed college is negatively associated with parents' self-rated health and positively associated with depressive symptoms. Additionally, among parents with the highest propensity for having no children who complete college, the consequences on depressive symptoms are greatest. |
| Molecular bridge mediates inhibitory synapse specificity in the cortex Posted: 14 Jul 2021 12:11 PM PDT Researchers have discovered that the cell adhesion protein IgSF11 determines the layer-specific synaptic connectivity of a distinct class of cortical interneurons. |
| Newfound human brain cell type helps center people in mental maps Posted: 14 Jul 2021 10:19 AM PDT A previously unknown kind of human brain cell appears to help people center themselves in their personal maps of the world, according to a new study from neuroscientists. This discovery shed light on the cellular mechanisms underlying navigation and memory in humans, as well as what parts of the brain might get disrupted during the kinds of memory impairments common in neurodegenerative diseases such as Alzheimer's. |
| Antidepressants may improve outcomes in people with diabetes and depression Posted: 14 Jul 2021 10:19 AM PDT People with diabetes and depression who take antidepressants may have a lower risk of death and of serious diabetes complications, according to a new study. |
| Posted: 14 Jul 2021 10:19 AM PDT Researchers have shown in a brain organoid study that exposure to a common pesticide synergizes with a frequent autism-linked gene mutation. |
| Antibiotics in early life could affect brain development Posted: 14 Jul 2021 08:05 AM PDT Antibiotic exposure early in life could alter human brain development in areas responsible for cognitive and emotional functions, according to researchers. |
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