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Aralık, 2023 tarihine ait yayınlar gösteriliyor

Sniffing women's tears reduces aggressive behavior in men, researchers report

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New research shows that tears from women contain chemicals that block aggression in men. The study finds that sniffing tears leads to reduced brain activity related to aggression, which results is less aggressive behavior. http://dlvr.it/T0lTQf

Spinal cord stimulation a potential new way to treat depression

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A pilot clinical trial found electrical stimulation of the spinal cord is feasible, well-tolerated and shows therapeutic potential to treat depression. http://dlvr.it/T0lTDy

Evidence early, but emerging, that gamma rhythm stimulation can treat neurological disorders

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A new review surveys a broadening landscape of studies showing what's known, and what remains to be found, about the therapeutic potential of non-invasive sensory, electrical or magnetic stimulation of gamma brain rhythms. http://dlvr.it/T0lT3y

Brain lesions in former football players linked to vascular, brain changes

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Signs of injury to the brain's white matter called white matter hyperintensities, as seen on brain scans, may be tied more strongly to vascular risk factors, brain shrinkage, and other markers of dementia in former tackle football players than in those who did not play football. http://dlvr.it/T0lSql

Light color is less important for the internal clock than originally thought

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Light in the evening is thought to be bad for sleep. However, does the color of the light play a role? Researchers compared the influence of different light colors on the human body. The researchers' findings contradict the results of a previous study in mice. http://dlvr.it/T0Vcc6

Researchers map how measles virus spreads in human brain

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Researchers mapped how the measles virus mutated and spread in the brain of a person who succumbed to a rare, lethal brain disease. New cases of this disease, which is a complication of the measles virus, may occur as measles reemerges among the unvaccinated, say researchers. http://dlvr.it/T0ThX4

Integrating research and clinical care to uncover secrets of brain development

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A subset of neurons related to memory and neuroplasticity continue to migrate into the brain through toddlerhood. http://dlvr.it/T0Th6C

Memory research: Breathing in sleep impacts memory processes

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Researchers have investigated how sleep affects memory. They found a link between breathing and the emergence of certain brain activity patterns in sleep that are associated with the reactivation of memory contents. The data points to possible consequences of unhealthy breathing on memory. http://dlvr.it/T0K1fh

AI's memory-forming mechanism found to be strikingly similar to that of the brain

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An interdisciplinary team consisting of researchers has revealed a striking similarity between the memory processing of artificial intelligence (AI) models and the hippocampus of the human brain. This new finding provides a novel perspective on memory consolidation, which is a process that transforms short-term memories into long-term ones, in AI systems. http://dlvr.it/T0Jn80

Exercise can boost brain health

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A fascinating link between regular exercise and better brain health has been revealed, according to an international study. http://dlvr.it/T0Gpv7

Cognitive strategies for augmenting the body with a wearable, robotic arm

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Scientists show that breathing may be used to control a wearable extra robotic arm in healthy individuals, without hindering control of other parts of the body. http://dlvr.it/T0Gpmt

Genetic 'protection' against depression was no match for pandemic stress

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Living through a historic pandemic while handling the stress of the first year of college sent one-third of students in a new study into clinical depression. That's double the percentage seen in previous years of the same study. And while certain genetic factors appeared to shield first-year students in pre-pandemic years from depression, even students with these protective factors found themselves developing symptoms in the pandemic years. http://dlvr.it/T0GFw9

Advanced MRI technology detects changes in the brain after COVID-19

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Researchers have examined the brains of 16 patients previously hospitalized for COVID-19 with persisting symptoms. They have found differences in brain tissue structure between patients with persisting symptoms after COVID-19 and healthy people. Their findings can bring insights into the underlying mechanisms of persisting neurological problems after COVID-19. http://dlvr.it/T0GFm7

What happens in the brain while daydreaming?

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During quiet waking, brain activity in mice suggests the animals are daydreaming about a recent image. Having daydreams about a recently viewed image predicted how the brain would respond to the image in the future. The findings provide a clue that daydreams may play a role in brain plasticity. http://dlvr.it/T07hxJ

Smoking causes brain shrinkage, study finds

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Smoking shrinks the brain and effectively causes premature brain aging, according to a new study. Quitting smoking prevents further loss of brain tissue but doesn't restore the brain to its original size. http://dlvr.it/T07hWq

Scientists unveil complete cell map of a whole mammalian brain

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Researchers have created a complete cell atlas of a whole mammalian brain. This atlas serves as a map for the mouse brain, describing the type, location, and molecular information of more than 32 million cells and providing information on connectivity between these cells. http://dlvr.it/T0607l

Traces of trauma in the young brain -- and how to erase them

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In research conducted on mice a team discovered brain mechanisms that go awry as a result of exposure to trauma in infancy and showed that these changes may be reversible if treated early.    http://dlvr.it/T05zsv

How stress activates neurons that disrupt sleep

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New research reveals that neurons in the preoptic hypothalamus -- the region of the brain that regulates sleep and body temperature -- are rhythmically activated during non-rapid eye movement sleep (NREM). Stress activates these brain cells out of turn, causing 'microarousals,' that interrupt sleep cycles and decrease the duration of sleep episodes, according to new research. http://dlvr.it/T05zhF

Study reveals a protein called snail may play a role in healing brain injury

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A new study provides us with a better understanding of how the brain responds to injuries. Researchers have discovered that a protein called Snail plays a key role in coordinating the response of brain cells after an injury.   http://dlvr.it/T01Cf4

What happens when the brain loses a hub?

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Neuroscientists have obtained the first direct recordings of the human brain in the minutes before and after a brain hub crucial for language meaning was surgically disconnected. The results reveal the importance of brain hubs in neural networks and the remarkable way in which the human brain attempts to compensate when a hub is lost, with immediacy not previously observed.  http://dlvr.it/SzwFnw

Discrimination during pregnancy may alter circuits in infants' brains

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Racial discrimination and bias are painful realities and increasingly recognized as detrimental to the health of adults and children. These stressful experiences also appear to be transmitted from mother to child during pregnancy, altering the strength of infants' brain circuits, according to a new study. http://dlvr.it/Szt9X1

Serotonin loss may contribute to cognitive decline in the early stages of Alzheimer's disease

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Comparing PET scans of more than 90 adults with and without mild cognitive impairment (MCI), researchers say relatively lower levels of the so-called 'happiness' chemical, serotonin, in parts of the brain of those with MCI may play a role in memory problems including Alzheimer's disease. http://dlvr.it/SzsCPx

Protein found in brain linked to frontotemporal dementia

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An international team of researchers has identified a protein found in the brains of people with frontotemporal dementia (FTD), discovering a new target for potential treatments for the disease. http://dlvr.it/SzsCHK

Why do some older adults show declines in their spatial memory?

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A study has investigated the possible scenarios that could lead to waning memory in some older people. http://dlvr.it/Szs00M

Repeated blast exposures may harm the brain health of military personnel

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The brains of special warfare community personnel repeatedly exposed to blasts show increased inflammation and structural changes compared with a control group, potentially increasing the risk of long-term, brain-related disease, according to a new study. http://dlvr.it/Szp1p4

New protein linked to early-onset dementia identified

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Scientists have identified abnormal aggregates of a protein called TAF15 in the brains of individuals with early-onset dementia, known as frontotemporal dementia, where the cause was not previously known. http://dlvr.it/SznhM2

Glial tone of aggression

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While anger and aggression are instinctive behaviors found across many species, leaving these emotions unchecked can lead to conflict and violence. In a recent study, researchers demonstrated that neuronal-glial interactions in the cerebellum determine the degree of aggression exhibited by mice. This suggests that future therapeutic methods could adjust glial activity in the cerebellum to help reduce unwanted aggression. http://dlvr.it/Szm048

Unlocking the secrets of the brain's dopaminergic system

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A new organoid model of the dopaminergic system sheds lights on its intricate functionality and potential implications for Parkinson's disease. The model replicates the dopaminergic system's structure, connectivity, and functionality. http://dlvr.it/SzlngM

Study identifies peptide as key mediator in heavy alcohol drinking

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Researchers have identified that a peptide called pituitary adenylate cyclase activating polypeptide (PACAP), is involved in heavy alcohol drinking. In addition, they have discovered that this peptide acts in the BNST area. http://dlvr.it/SzjSWv

Combined use of alcohol and THC can affect rat brains, study finds

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The increased legalization of cannabis over the past several years can potentially increase its co-use with alcohol. Concerningly, very few studies have looked at the effects of these two drugs when used in combination. In a series of new studies, researchers at used rats to understand how brain structure and behavior can change when cannabis and alcohol are taken together. http://dlvr.it/SzjSLP

Brains of newborns aren't underdeveloped compared to other primates

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Contrary to current understanding, the brains of human newborns aren't significantly less developed compared to other primate species, but appear so because so much brain development happens after birth, finds a new study. http://dlvr.it/SzjGSJ

New study maps ketamine's effects on brain

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A mouse study found that the drug ketamine can alter the brain's dopamine system, boosting the case for more targeted medical use. http://dlvr.it/SzjGLB

Salty immune cells surrounding the brain linked to hypertension-induced dementia

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A study suggests that the response of immune system cells inside the protective covering surrounding the brain may contribute to the cognitive decline that can occur in a person with chronic high blood pressure. This finding may shed light on new ways to counteract the effects of high blood pressure on cognition. http://dlvr.it/SzjG8S

Loss of auditory nerve fibers uncovered in individuals with tinnitus

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Researchers have uncovered that tinnitus, an incurable persistent ringing or other sounds in the ears, might result from underlying auditory nerve damage that can't be detected on conventional hearing tests. The work builds upon previous research into cochlear synaptopathy or 'hidden hearing loss,' a difficulty hearing in noisy environments despite showing normal results on hearing tests. The researchers hope these new findings into the mechanisms underlying tinnitus could lead to treatment options.  http://dlvr.it/Szf9wV

Human behavior guided by fast changes in dopamine levels

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A new study shows that dopamine release in the human brain plays a crucial role in encoding both reward and punishment prediction errors. This means that dopamine is involved in the process of learning from both positive and negative experiences, allowing the brain to adjust and adapt its behavior based on the outcomes of these experiences. http://dlvr.it/SzcTn2

Scientists use A.I.-generated images to map visual functions in the brain

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Researchers have demonstrated the use of AI-selected natural images and AI-generated synthetic images as neuroscientific tools for probing the visual processing areas of the brain. The goal is to apply a data-driven approach to understand how vision is organized while potentially removing biases that may arise when looking at responses to a more limited set of researcher-selected images. http://dlvr.it/SzZ4wx

Brain waves usually found in sleep can protect against epileptic activity

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Slow waves that usually only occur in the brain during sleep are also present during wakefulness in people with epilepsy and may protect against increased brain excitability associated with the condition, finds a new study. http://dlvr.it/SzZ4ch