Kayıtlar

Mayıs, 2024 tarihine ait yayınlar gösteriliyor

How does the brain turn waves of light into experiences of color?

Resim
Perceiving something -- anything -- in your surroundings is to become aware of what your senses are detecting. Today, neuroscientists identify, for the first time, brain-cell circuitry in fruit flies that converts raw sensory signals into color perceptions that can guide behavior. http://dlvr.it/T70TQk

Artificial intelligence tool detects male-female-related differences in brain structure

Resim
Artificial intelligence (AI) computer programs that process MRI results show differences in how the brains of men and women are organized at a cellular level, a new study shows. These variations were spotted in white matter, tissue primarily located in the human brain's innermost layer, which fosters communication between regions. http://dlvr.it/T700Kt

'Trojan horse' weight loss drug more effective than available therapies

Resim
A groundbreaking article describes a promising new therapy for obesity that leads to greater weight loss in mice than existing medications. The approach smuggles molecules into the brain's appetite center and affects the brain's neuroplasticity. http://dlvr.it/T6zh51

Research sheds light on how proteins linked to Alzheimer's disease influence neuronal growth

Resim
New research has shed light in the complex interplay between cell proteins, and how they impact on neurons in neurodevelopmental disorders and Alzheimer's disease. http://dlvr.it/T6xZ5C

An astrocytic pH regulator that can repair the blood-brain barrier and reverse brain damage caused by ischemic stroke

Resim
A recent study has found that an ion transporter protein that regulates the pH of specific brain cells can repair the blood-brain barrier and restore normal brain function after ischemic stroke. The study has revealed novel and specific therapeutic targets for ischemic stroke and related brain conditions for which no targeted treatments exist currently. http://dlvr.it/T6xKMs

Some brain cells age faster and are more prevalent in Alzheimer's

Resim
Engineers have discovered that some brain cells age more rapidly than others, and they are disproportionately abundant in individuals afflicted with Alzheimer's disease. Additionally, researchers observed male-female-specific differences in the aging process of certain brain cells, with the female cortex exhibiting a higher ratio of 'old' oligodendrocytes to 'old' neurons compared to the male cortex. The discoveries were made possible by a new technique called MUSIC (multinucleic acid interaction mapping in single cells), which allows researchers to peek inside individual brain cells and map out interactions between chromatin--which is the tightly coiled form of DNA -- and RNA. http://dlvr.it/T6tdQz

Innovative 'mini-brains' could revolutionize Alzheimer's treatment

Resim
New research could revolutionize the way Alzheimer's and other brain-related diseases are diagnosed and treated -- by building tiny brains in a petri dish. http://dlvr.it/T6tKgC

Study reveals patients with brain injuries who died after withdrawal of life support may have recovered

Resim
Analysis of 1,392 patients with traumatic brain injuries (TBIs) found that some patients for whom life support was withdrawn may have survived and recovered some level of independence a few months after injury. Families are often asked to make decision to withdraw life support within 72 hours of a brain injury, and the new study suggests delaying decisions may be beneficial for some patients. http://dlvr.it/T6qHfY

Study shows heightened sensitivity to PTSD in autism

Resim
A new study shows that a mild stress is enough to trigger post-traumatic stress disorder (PTSD) in mouse models of autism spectrum disorder (ASD). Researchers demonstrated that the two disorders share a reciprocal relationship, identifying a predisposition to PTSD in ASD, and discovering that core autism traits are worsened when traumatic memories are formed. http://dlvr.it/T6jSLr

Brain mechanisms underlying sensory hypersensitivity in a mouse model of autism spectrum disorder

Resim
A research team has identified the primary cause of sensory hypersensitivity in a mouse model of autism spectrum disorders (ASD). http://dlvr.it/T6jSCJ

How the brain is flexible enough for a complex world (without being thrown into chaos)

Resim
Many neurons exhibit 'mixed selectivity,' meaning they can integrate multiple inputs and participate in multiple computations. Mechanisms such as oscillations and neuromodulators recruit their participation and tune them to focus on the relevant information. http://dlvr.it/T6j6h8

A fragment of human brain, mapped in exquisite detail

Resim
Researchers have created the largest synaptic-resolution, 3D reconstruction of a piece of human brain to date, showing in vivid detail each cell and its web of neural connections in a piece of human temporal cortex about half the size of a rice grain. http://dlvr.it/T6gBzh

High school student helps transform 'crazy idea' into innovative research tool

Resim
A 'crazy idea' hatched during a walk in the woods and first tested by a high school student is now an innovative research tool used by scientists worldwide to predict neurotransmitters in fruit fly connectomes. http://dlvr.it/T6gBhY

Childhood maltreatment responsible for up to 40 percent of mental health conditions

Resim
A study has found the widespread impact of child abuse and neglect, with analysis suggesting they cause nearly half of common mental conditions. Researchers say childhood maltreatment should be treated as a public health priority. http://dlvr.it/T6fbwM

How psychedelic drugs interact with serotonin receptors to potentially produce therapeutic benefits

Resim
Researchers have shed valuable light on the complex mechanisms by which a class of psychedelic drugs binds to and activates serotonin receptors to produce potential therapeutic effects in patients with neuropsychiatric disorders such as depression and anxiety. http://dlvr.it/T6fbZk

Why getting in touch with our 'gerbil brain' could help machines listen better

Resim
Researchers have debunked a 75-year-old theory about how humans determine where sounds are coming from, and it could unlock the secret to creating a next generation of more adaptable and efficient hearing devices ranging from hearing aids to smartphones. http://dlvr.it/T6cRdW

'Mathematical microscope' reveals novel, energy-efficient mechanism of working memory that works even during sleep

Resim
Researchers have discovered a mechanism that creates memories while reducing metabolic cost, even during sleep. This efficient memory occurs in a part of the brain that is crucial for learning and memory, and where Alzheimer's disease begins. http://dlvr.it/T6c72Y

Human 'neural compass' pinpointed in new study

Resim
A pattern of brain activity that helps prevent us from getting lost has been identified in a new study. http://dlvr.it/T6c6b5

Breakthrough paves the way for next generation of vision implants

Resim
A group of researchers have created an exceptionally small implant, with electrodes the size of a single neuron that can also remain intact in the body over time -- a unique combination that holds promise for future vision implants for the blind. http://dlvr.it/T6bk8s

Genetics, not lack of oxygen, causes cerebral palsy in quarter of cases

Resim
The world's largest study of cerebral palsy (CP) genetics has discovered genetic defects are most likely responsible for more than a quarter of cases in Chinese children, rather than a lack of oxygen at birth as previously thought. http://dlvr.it/T6YrYj

New study reveals age-related brain changes influence recovery after stroke

Resim
A new study has revealed that areas of age-related damage in the brain relate to motor outcomes after a stroke -- a phenomenon that may be under-recognized in stroke research. The new observational study looked at the relationship between stroke recovery and white matter hyper-intensities (WMHs) -- areas of age-related damage in the brain's white matter, which represent vascular dysfunction and are known to impact cognitive functions. http://dlvr.it/T6Vtzg

Small molecule shows early-stage promise for repairing myelin sheath damage

Resim
A breakthrough study appears to overcome difficulties that have long frustrated previous attempts to reverse a form of nerve damage that robs people with MS of motor control and gradually blunts cognitive functions for many people as they age. http://dlvr.it/T6Vtky

How the brain's arousal center helps control visual attention too

Resim
Neuroscientists have artificially increased neuronal activity in part of the brain by briefly shining light on genetically modified neurons. They saw that this manipulation selectively enhanced performance in non-human primates performing a visual attention task, underscoring the crucial role that attention plays in sensory perception. http://dlvr.it/T6NDxb

Low intensity light to fight the effects of chronic stress

Resim
Some neurological disorders can be improved through photobiomodulation, a non-invasive technique based on the application of low-intensity light to stimulate altered functions in specific regions of the body. Now, a study reveals how photobiomodulation applied to the brain-gut axis is effective in recovering some cognitive alterations and sequelae caused by chronic stress. The study opens up new perspectives for applying the technique in future therapies for the treatment of neurological diseases in patients. http://dlvr.it/T6L30z

Nutrient research reveals pathway for treating brain disorders

Resim
The team discovered that an essential nutrient called choline is transported into the brain, across the blood-brain barrier, by a protein transporter called FLVCR2. This is discovery will inform future design of drugs for diseases such as Alzheimer's and stroke, mimicking choline so they can be smuggled into the brain. http://dlvr.it/T6Hx3c

A blood test for stroke risk? Biomarker for risk of future cerebrovascular disease

Resim
A simple blood test could allow doctors to determine whether a person may be at higher risk for stroke or cognitive decline during their lifetime, according to a new study. http://dlvr.it/T6HT7V