Articles tagged with Brain Structure
A study of 87,577 adults found that average daytime light exposure above 1,000 lux reduced dementia risk by 16%. Longer exposure to bright light was associated with an even greater reduction in risk. Daytime light exposure was stronger predictor of dementia than established risk factors.
Researchers have found that cats show comparable patterns of brain deterioration as they age, similar to humans. This study, part of the Translating Time project, aims to unlock new insights into human ageing and disease by comparing cat and human brain development.
Research reveals that zebra finch chicks' brain development is altered by heat warning calls in the egg, preparing them for hot conditions after hatching. The changes involve genes involved in blood vessel structure and muscle contraction, potentially protecting the chicks from heat stroke.
Researchers found that socioeconomic factors, such as family income and neighborhood resources, have a strong connection to brain development in children. These factors are more strongly linked to brain function than IQ scores or parenting style, and can even affect the structure of the brain through disrupted sleep and chronic stress.
Researchers have made major steps toward solving the mystery of how brain aneurysms form by identifying key cell types and genetic pathways involved. The study's findings provide new insights into a clinical paradox: smaller aneurysms can still rupture, and offer opportunities for early intervention to prevent ruptures.
Researchers have published the first complete connectome of a fruit fly brain and 'spinal cord', allowing for the study of how neural circuits control complex behaviors. The open-source resource is poised to propel neuroscience research by providing insights into basic principles of nervous system interactions.
A new research initiative aims to harness the potential of astrocytes, a type of brain cell often overlooked in AI development. By studying how astrocytes process information, researchers hope to create next-generation AI systems that learn faster and adapt more reliably.
Researchers develop tailored revascularization approach for moyamoya disease, improving circulation while minimizing complications. The technique, called STAPC, uses vessel diameter, blood-flow dynamics, and recipient brain arteries to guide surgical decisions.
Researchers identified a key brain pathway in rats that helps them decide whether to approach stressed pups or avoid stressed adult peers. The insular cortex and prefrontal cortex work together to process social information, with the pathway playing a crucial role in making these decisions.
Researchers discovered that interictal epileptiform discharges (IEDs) occur in a predictable pattern, unfolding sequentially in individual neurons. Nearly 80% of IED-involving neurons are also involved in language and perception, suggesting the brain blips can derail cognition.
Research reveals two dimensions of neuroticism: one linked to mental disorders and life well-being, the other to emotional reactivity and internal stability. High-ERIS individuals live longer due to healthier habits and risk avoidance.
The Individual Brain Charting project has released its fifth update with a new set of cognitive tasks, expanding the dataset to 40 hours of scanned data per participant. This provides an exceptionally rich resource for studying individual variability in brain organisation and understanding brain function.
New research identifies Smoothened as a regulator of dopamine-acetylcholine timing, influencing learning, motivation, and behavioral flexibility in adulthood. The study found that animals lacking Smoothened learned motor tasks more quickly but were less sensitive to changes in effort or reward timing.
Researchers have mapped the first migratory bird brain using high-resolution light microscopy and open-source software tools, creating a valuable resource for neuroscience worldwide. The new Eurasian blackcap atlas enables consistency in brain data interpretation and fosters collaboration among researchers.
Neurobiologists have identified the brain circuitry responsible for placebo pain relief, revealing a site where endogenous opioid peptides drive pain relief. The study offers hope for using expectancy-driven placebo effects as a substitute for painkillers and developing protocols to produce placebo pain resilience in humans.
A new study found that brain activity and emotional reactivity may predict risk of readmission for patients with major depressive disorder or bipolar disorder. Participants who reacted strongly to negative emotions were at higher risk of hospitalization, suggesting a potential biomarker for identifying vulnerable individuals.
Researchers propose a novel brain architecture for efficient processing, integrating parallel cortical and subcortical pathways. This approach may improve decision-making tasks, suggesting current AI models are missing key brain function principles.
Researchers discovered a crucial connection between the two hippocampal hemispheres in mice, which is necessary for navigation and remembering locations. The study also found that this circuit is altered in mice carrying a genetic mutation associated with schizophrenia.
Researchers developed a nasal spray that reversibly reduces brain inflammation, restores cellular power plants, and improves memory. The treatment bypasses the brain's protective shield through intranasal delivery, suppressing chronic inflammation and promoting successful brain aging.
A team of researchers, led by Bistra Iordanova and Liang Zhan, are developing multiscale models of brain metabolism to predict cognitive decline and dementia. They will analyze data from brain imaging, blood flow, and neural activity to identify metabolic changes that affect brain function in aging.
A research team led by LEE Doyun and KIM Yee-Joon found that the primary visual cortex encodes motion summaries and variability before higher brain regions transform them into category signals. This process, known as ensemble perception, allows the brain to capture the overall structure of a scene at a glance.
Researchers discovered that stroke survivors with severe motor impairment show signs of brain 'youthfulness' in undamaged regions, suggesting the brain's ability to adapt and compensate. This finding provides new insights into neuroplasticity and may guide personalized rehabilitation strategies.
A new brain pathway has been identified that enables humans to quickly detect and respond to 'scary' sounds, leading to increased self-reported fearfulness. This pathway is associated with better hearing ability in noisy environments.
A new study identifies a previously unknown brainstem pathway controlling hand and arm movements, revealing a multi-stage pathway integrating signals from the cortex, brainstem, and spinal networks. This finding may lead to new therapies for stroke rehabilitation, providing additional targets for neuromodulation treatments.
Researchers optimize interferometric diffusing wave spectroscopy technique to boost weak optical field returning from the brain, achieving over 20x signal to noise ratio. The novel approach provides higher brain sensitivity compared to DCS-inspired approaches and is approximately two orders of magnitude less expensive.
A new study reveals that astrocytes regulate inhibitory signaling in the cerebellum during development, enabling the emergence of flexible and precise motor coordination. In contrast, younger animals rely on neuron-derived tonic inhibition, which is replaced by astrocyte-derived tonic inhibition in late adolescence.
A University of Houston researcher disputes a study claiming multilingualism promotes healthy brain aging, finding that wealth and healthcare systems may drive longevity instead. Hernandez argues that individual behavioral solutions, such as learning a language, are oversold and distract from structural factors that support healthy aging.
A recent study mapped brain injuries in individuals with acquired aphantasia and found that all cases were connected to the fusiform imagery node. This suggests a critical role for this region in maintaining visual imagination. The findings have implications for rehabilitation strategies and understanding of cognitive function.
Researchers found that larger amygdala volumes are associated with higher social tolerance in macaque monkeys, suggesting a multifunctional role of the amygdala in processing complex social information. Hippocampus volume was not significantly linked to social tolerance.
Researchers found that veterans with prior concussions showed slower and less accurate eye movements, along with reduced performance on attention-based tasks. These subtle brain changes can be measured more than a decade after the original injury.
Researchers identify nonsense-mediated mRNA decay (NMD) as a central mediator of neuronal migration and cortical lamination. The study reveals that UPF2, a core component of NMD machinery, is essential for proper neuron migration and brain development.
Researchers used machine learning techniques to compress a large model of the visual cortex, creating smaller versions that predict neural responses with high accuracy. The compact models revealed specific computational patterns in how neurons detect important features, offering insights into how visual information is processed.
A new study reveals that astrocytes actively participate in motor-learning circuit rewiring by eliminating synapses in the striatum. The research identifies MEGF10 as a key molecular mediator of this process, which is regulated by dopamine signaling and neural activity.
A Dartmouth study challenges the conventional view of the amygdala as a primitive 'fear center' by revealing its role in mediating between competing learning strategies. The research suggests that the amygdala favors action-based learning, promoting exploration and flexibility to overcome fear.
Researchers at Amsterdam UMC found that a second pregnancy changes the female brain in unique ways, altering brain networks involved in attention and sensory cues. The study also linked structural brain changes to maternal mental health, providing new insights into postpartum depression.
Scientists have discovered a mechanism that explains how exercise improves cognition by shoring up the brain's protective barrier. The study found that an exercise-induced liver protein strengthens the blood-brain barrier, reducing inflammation and cognitive decline associated with Alzheimer's disease.
Researchers have developed a new device that can record and stimulate activity across the entire surface of miniature, lab-grown human brain-like tissues, enabling whole-network mapping and manipulation. This breakthrough could improve our understanding of brain development, function, and disease.
A new software tool developed by MIT researchers can reliably and finely resolve eight distinct nerve bundles in live diffusion MRI scans, shedding light on neurodegenerative diseases like Parkinson's and Alzheimer's. The BrainStem Bundle Tool (BSBT) reveals distinct patterns of structural changes in patients with these conditions.
Researchers have identified a specific brain network that is mainly active in the fast beta frequency range and modulates motor symptoms of Parkinson's disease through deep brain stimulation. Stimulating this network, which communicates at 20-35 Hz, can improve motor symptoms in patients with Parkinson's disease.
Researchers have developed a long, needle-thin brain electrode with channels that enables neural signal recording and precisely targeted medication delivery across different brain regions. The technology has primarily been developed for basic research but may be important for future treatments in epilepsy and other neurological diseases.
Researchers at the University of Notre Dame investigated how brain networks are organized and work together to form a unified system. They found evidence for system-wide coordination in the brain that is both robust and adaptable, suggesting that intelligence reflects how brain networks are coordinated and dynamically reconfigured.
Researchers at Karolinska Institutet created the first activity-based maps of the prefrontal cortex, revealing a hierarchy of information flow rather than tissue structure. This challenges traditional definitions of brain regions and has major implications for understanding brain organisation overall.
A recent study reveals that tissue stiffness regulates the production of key signaling molecules in the brain, using the mechanosensitive protein Piezo1. This discovery opens new avenues for understanding development and tackling diseases such as cancer.
Research reveals structural brain changes in older adults affect ability to shift between tasks and update environmental information. These changes may lead to deficits in behavioral adaptability, emphasizing the importance of identifying age-related brain structure changes.
Researchers developed a unified multimodal framework to analyze joint aging changes in brain function and structure. The study identified two primary aging patterns: synergistic declines in motor control and higher-order cognition, and contradictory adaptations in visual areas.
A team of researchers has reconstructed how the cerebellum establishes its connections with the rest of the brain during earliest stages of life. The work describes the phases in which these neural connections emerge, expand, and are refined, offering a comprehensive map of cerebellar projections across the mouse brain.
Researchers at USC have identified four distinct layers of specialized cell types in the CA1 region of the mouse hippocampus, a structure vital for memory formation. This discovery changes our understanding of how information is processed in the brain and could explain why certain cells are more vulnerable in diseases like Alzheimer's ...
Researchers at the University of Plymouth have successfully used transcranial ultrasound stimulation (TUS) to change the function of a deep region of the human brain, specifically the nucleus accumbens. This tiny element is triggered by enjoyable experiences and helps us learn behaviours that lead to rewards.
Researchers found that the prefrontal cortex sends customized signals to visual and motor regions, influencing their activity based on arousal levels and movement. The study reveals distinct roles of prefrontal subregions in shaping visual processing, with one region enhancing stimuli detection and another dampening irrelevant stimuli.
A USC study mapped tiny structural differences in white matter among children and young adults with autism, pinpointing patterns that earlier methods would have missed. The findings highlight the importance of developing new methods to better understand brain differences in autism.
Researchers at Tulane University discovered a new nerve cell signaling mechanism that can turn on pain signaling after injury, potentially leading to safer treatments. The discovery of enzyme vertebrate lonesome kinase (VLK) offers a new way to influence cell behavior and could simplify drug development.
Researchers from UC San Francisco have identified the superior temporal gyrus brain region responsible for tracking words in a foreign language. The study shows that this region learns to recognize word boundaries through years of experience, enabling fluent speakers to distinguish individual words.
Researchers have successfully engineered functional brain-like tissue without animal-derived materials, opening doors to more controlled and humane neurological drug testing. The new material functions as a scaffold for donor brain cells and can be used to model traumatic brain injuries or neurological diseases like Alzheimer's.
Researchers created BraDiPho, a 3D atlas of brain connections, combining clinical neuroscience, artificial intelligence, and neuroanatomy. The tool facilitates precise identification of white matter connections, opening up new therapeutic perspectives for neurological diseases.
The study identified dozens of genetic regions that influence the size and thickness of the corpus callosum and its subregions. The research team created an AI-powered tool that finds and measures the corpus callosum in brain MRI scans automatically, allowing for unprecedented analysis of brain structure at scale and precision.
Researchers at NUS Medicine found that social interactions trigger memory-enhancing signals to the CA1 region of the hippocampus through metaplasticity, strengthening 'memory proteins'. Regular social interactions are crucial for this process, as time-limited effects suggest.
A recent study found that preserving just one centimeter of corpus callosum fibers is enough to maintain information exchange between the two brain hemispheres, preventing neurological symptoms. The research challenged long-held assumptions about the relationships between brain structure and function.
Researchers at UTA are exploring how guided cognitive training can improve brain performance, particularly in navigation and memory. The study found that functional brain changes support behavioral differences, rather than increased brain volume.