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News
Brain cells that protect nerve fibers can turn harmful with age
6+ hour, 47+ min ago (943+ words) A surplus of insulating brain cells, low on one protective protein, tracked the steepest cognitive decline in adults followed since childhood. After 70, memory and quick thinking slow down for most people, and the usual explanation is that the brain’s wiring…...
Tiny sounds can make fluid waves larger in the sleeping brain
2+ day, 10+ hour ago (1003+ words) Carefully timed sounds can make fluid waves larger in the sleeping brain, giving researchers a new way to study how brain activity and CSF flow are connected. Sleep is often treated as a time when the brain simply shuts down....
Scientists identify brain cells that control how badly the body needs sleep
4+ day, 17+ hour ago (1126+ words) Two groups of brainstem cells build sleep drive in mice, and damping them cut sleep by nearly 70% without the usual damage. Push through a long enough day and the urge to sleep stops being a choice. That pressure builds the…...
The brain’s natural painkiller system can turn against the body
5+ day, 11+ hour ago (1143+ words) Switching off a cluster of cells in the mouse brainstem eased nerve pain, and restoring one receptor reversed months of hypersensitivity. The brain runs a painkiller of its own. At the base of the skull, a small cluster of cells…...
Students learned two ways to handle bad memories, but only one carried into daily life
5+ day, 12+ hour ago (1132+ words) Five weeks of emotion training reduced distress in college students, with the clearest change coming from where they directed their attention. When something goes wrong, plenty of people try to talk themselves into a better view of it. College students…...
Progesterone levels may be linked to how the brain handles emotions
1+ week, 16+ hour ago (1052+ words) Higher progesterone was linked to less distinct brain signals during emotion control and to lower mood in women. Progesterone and estradiol change across the menstrual cycle and are linked with mood. How they relate to emotional control in the brain…...
Why some people stay mentally sharp well into old age
1+ week, 16+ hour ago (958+ words) Education, lifelong mental activity, and emotional skills may support cognitive abilities and influence how the brain changes with aging. Mental abilities can change with age, but not everyone experiences the same changes. Some older adults remain strong across many mental…...
Childhood trauma can make it harder to look forward to things
1+ week, 4+ day ago (940+ words) Childhood trauma predicted less pleasure in looking ahead only when one memory region worked poorly with the brain's reward system. People get through ordinary days partly by looking ahead to small things: dinner later, a message back, Friday night. Some…...
Memory starts changing earlier in life than most people think
1+ week, 4+ day ago (1021+ words) Memory changes may begin by middle age, as brain patterns linked to remembering become less precise with age. Memory problems are often linked with old age. A forgotten name or a familiar face without a clear memory of where it…...
Neuron regeneration offers a different way to target Alzheimer’s
1+ week, 5+ day ago (1047+ words) Alzheimer's drugs can slow damage, but they can't replace lost brain cells. A new approach to neuron regeneration could change that. The Alzheimer’s drugs approved so far go after sticky protein deposits in the brain, and the best of them…...