Articles tagged with White Matter
A new MRI metric, PSMD, detects early white matter abnormalities in Alzheimer's disease, including in individuals with Down syndrome. This study provides insights into the early stages of Alzheimer's disease and its progression.
A secondary imaging analysis found free water was the most responsive cerebrovascular MRI marker to lifestyle intervention, showing attenuated small-vessel disease-related injury. Intensive lifestyle intervention implemented earlier in late life provided greater microvascular benefits.
A new University of Arizona study has found that several common sleep behaviors may be linked to signs of brain aging. Sleeping outside the recommended seven-to-nine-hour range, frequent daytime napping, and sleeplessness were distinctly associated with greater volume of white matter lesions in healthy people.
Deep brain stimulation (DBS) can remodel white matter pathways in the brain and alter communication across large-scale neural networks. The therapy helps patients recover from severe depression by increasing fractional anisotropy and myelination within specific pathways, suggesting a previously unrecognized mechanism.
A new study by the University of Turku found that long COVID patients experience increased brain activity in mood and emotion regions, rather than widespread brain inflammation. The study suggests that treatments targeting stress and emotional regulation may be more effective for patients with prolonged symptoms.
A longitudinal study on individuals with Down syndrome reveals that cerebrovascular lesions do not follow a linear course, fluctuating and even decreasing over time. The analysis shows significant variability in the evolution of these lesions, particularly in regions already affected by Alzheimer's disease.
Researchers found that computerized cognitive games improved neuroplasticity in adults with chronic traumatic brain injuries, leading to better cognitive performance. The study revealed changes in white matter associated with improved processing speed, attention, and working memory.
Researchers at Cedars-Sinai Medical Center have identified a mechanism that could help treat patients with spinal cord injuries, stroke, and neurological conditions. Astrocytes, a type of cell in the central nervous system, play a critical role in responding to damage and disease, sending signals to immune cells to clean up debris resu...
A study among WTC responders with chronic PTSD found measurable physical changes in their brain structure, including cortical changes and imbalance of myelinated to unmyelinated neurons. These changes were most strongly associated with re-experiencing symptoms in individuals with PTSD.
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 have discovered a link between maternal PFAS levels during pregnancy and their children's brain structure and function. The study found that maternal PFAS were linearly associated with many aspects of their children's brain structure, including the corpus callosum, posterior grey matter volume, and hypothalamus.
Researchers found neglected children had abnormalities in critical brain regions, including right corticospinal tract and superior longitudinal fasciculus, linked to behavioral difficulties. These findings provide objective markers for identifying children affected by neglect.
Researchers from the National Institute of Physiological Sciences evaluated the impact of denoising algorithms on dMRI data for detecting tissue abnormalities in glaucoma. They found that denoising increased signal-to-noise ratio and altered image appearance, but had limited effect on disease-related changes.
This study found that increased screen time in late childhood was associated with more depressive symptoms, likely due to shorter sleep duration. Poor white matter organization during early adolescence may also contribute to this link.
The study reveals that white matter microstructure in infants' brains between 3-9 months predicts their emotional development. Infants with certain brain patterns are more likely to exhibit negative emotions or improved self-soothing abilities.
Researchers have designed an optical device that functions as an optical black hole or white hole, behaving like a cosmic object that either swallows or repels light. This device relies on coherent perfect absorption of light waves and offers new possibilities for manipulating light-matter interactions.
A study of over 9,000 participants found that early life adversities correlate with diminished white matter connections, increasing the risk for cognitive difficulties. However, supportive relationships such as neighborhood cohesion and positive parenting may offer protection against these effects.
Researchers identify how a balance of innate structure and flexible learning produces our remarkably organized visual brains. They found that regions in the ventral temporal cortex have distinct cellular organization and white matter connections from birth.
Researchers at Helmholtz Munich identified distinct subtypes of white matter astrocytes, including one that can multiply and support brain repair. These findings raise possibilities for regenerative medicine and therapies for brain injuries and neurodegenerative diseases.
A new study published in Annals of Neurology found that lower concentrations of vitamin B12 in healthy, older adults led to signs of neurological and cognitive deficiency. These individuals showed slower processing speeds, brain lesions, and delayed responses to visual stimuli compared to those with higher B12 levels.
The Neuron special issue sheds light on the science of aging, focusing on how age-related changes impact the brain's ability to clear waste and transport energy. The collection also explores the link between the immune system and brain health.
The study found that female infants had significantly more grey matter than male infants, while male infants had more white matter. These sex differences are average and do not imply better or worse brains, but rather reflect biological sex differences during prenatal brain development.
A new blood-based biomarker, placental growth factor (PlGF), has been identified as a potential tool for detecting early brain changes associated with cognitive impairment and dementia. Elevated PlGF levels were found to be linked to increased vascular permeability, leading to white matter injury and subsequent cognitive decline.
The study aims to identify early warning signs and potential treatment for cerebral small vessel disease, a condition linked to vascular dementia. Researchers will analyze cerebrospinal fluid and brain tissues using cutting-edge technologies to map mRNA within cells affected by the disease.
Leila Nabulsi is expanding her research program to pinpoint brain pathways affected by bipolar disorder. She will leverage the ENIGMA consortium and advanced statistical methods to build a database of brain changes, potentially improving diagnosis and treatment.
A new study by UT Health San Antonio found that higher levels of leptin are associated with better signal-transmitting brain white matter in middle-aged adults. The researchers also discovered a link between leptin bioavailability and reduced risk of cognitive impairment, providing potential insights into obesity's role in dementia.
Researchers have created the first map of a human brain over the course of pregnancy, documenting changes in gray and white matter. These findings suggest that the adult brain is capable of undergoing extended periods of neuroplasticity, which may support behavioral adaptations tied to parenting.
Researchers have successfully visualized and tracked specific cells in deep brain tissue, including along the corpus callosum's nerve fibre highway. This advancement could potentially lead to better diagnostic tools for glioblastoma, a deadly brain cancer.
Researchers at Vanderbilt University Medical Center have detected strong white matter signals in the spinal cord that promote nerve regeneration and healing after injury. These signals are comparable to those seen in gray matter, which enables targeted delivery of electromagnetic stimuli or drugs to restore nerve activity.
A clinical trial found that fish oil supplements slowed neuronal integrity breakdown in older adults with the APOE4 gene variant, a risk factor for Alzheimer's disease. The study showed no benefit for all older adults, but suggested omega-3 fatty acids may be useful for prevention.
Researchers found a causal link between cerebral small-vessel disease and increased risk of Alzheimer's and dementia. The study highlights the importance of white matter hyperintensity burden as a surrogate marker for clinical trials to prevent dementia.
Researchers found that women who had their ovaries removed before menopause experience reduced white matter integrity in multiple brain regions. This reduction may contribute to an increased risk of cognitive decline and dementia later in life.
A study of over 2,000 preadolescents found that early life exposure to extreme temperatures can lead to slower white matter maturation, which may impact cognitive function. Children living in poorer neighborhoods are more vulnerable to the effects of cold and heat, with differences in windows of susceptibility observed.
A recent study found that high cumulative BMI is associated with smaller brain volume, larger white matter lesions, and abnormal microstructural integrity in adults. Maintaining a healthy BMI below 26.2 kg/m² is suggested for better brain health.
A new study using AI technology analyzed MRI scans from 471 men and 560 women, revealing differences in brain organization at a cellular level. The findings highlight the need for diversity in neurological research and may offer new insights into how psychiatric and neurological disorders develop differently in men and women.
A groundbreaking study found that areas of age-related damage in the brain relate to motor outcomes after a stroke, suggesting other factors are at play. White matter hyperintensities were associated with more severe motor impairment, independent of corticospinal tract damage.
A previously healthy man developed toxic leukoencephalopathy after inhaling fentanyl, leading to inflammation in the brain and potentially irreversible damage. Fortunately, he slowly recovered with wraparound treatment from a multidisciplinary team at OHSU.
Researchers found that bone marrow mononuclear cell infusion in children within 48 hours of severe traumatic brain injury reduced intensive care needs and preserved white matter. The treatment also enhanced connectivity in the corpus callosum, a midline structure in the brain.
A study published in Neurology found that white matter hyperintensities in former football players are associated with greater vascular risk factors, brain shrinkage, and other markers of dementia. The study suggests that brain scans may be a promising tool to study the long-term effects of repetitive head impacts.
Researchers at Linköping University used advanced diffusion MRI to examine the brains of patients with persisting symptoms after COVID-19 and found differences in white matter structure. This study provides new insights into the underlying mechanisms of post-COVID neurological problems.
Researchers used AI to analyze brain white matter tracts in adolescents with and without ADHD, discovering significant differences in nine brain tracts in individuals with ADHD. Early diagnosis and intervention are key to managing the condition.
A large brain autopsy study of women who experienced intimate partner violence found substantial vascular and white matter damage, but no evidence of chronic traumatic encephalopathy. The study also revealed significant medical comorbidity, including cardiovascular and cerebrovascular disease.
Researchers used new software to compare MRI scans from 300 babies and found that myelin, a fatty sheath around axons, develops much slower after birth. The study supports the idea that gestational age at birth and scan time matter for brain development.
Researchers highlight microvascular contributions to white matter injury in Alzheimer's disease, sparking calls for exploration of connections between AD, WM injury and cerebral small vessel disease. The study emphasizes the critical need to define mechanisms and diagnostic features of mixed vascular and AD neuropathological change.
A large-scale study of the UK Biobank data found that shorter white blood cell telomeres are associated with a higher risk of dementia, including Alzheimer's disease and vascular dementia. Telomere length was also linked to smaller total brain volume and reduced brain structure.
Researchers found that ferroptosis, a form of cell death caused by iron buildup, destroys microglia cells in the brain's immune response, contributing to cognitive decline. The study's findings may lead to the development of compounds targeting microglial degeneration, offering new hope for Alzheimer's and vascular dementia treatments.
A review article confirms neurofilament light (NfL) blood levels can predict the severity and rate of neurodegeneration in Alzheimer's disease. High NfL levels are correlated with brain damage, cognitive decline, and increased risk of developing the disease.
A case series reveals that young brain donors with a history of repetitive head impacts exhibit severe symptoms, which may be caused by multiple factors. Further research is needed to clarify the association between exposure to head impacts and clinical symptoms in young athletes.
Rice University scientists have developed a tiny, flexible spinal probe system that can record high-quality data from spinal cord neurons and provide localized stimulation. The new tool aims to improve our understanding of spinal cord function and potentially bring new hope to patients with injuries or conditions.
Researchers at Duke University Medical Center have identified a fatty molecule in breast milk that triggers a process in which stem cells produce new white matter, reversing neurological damage. This finding holds promise for developing therapies to treat preterm babies with cerebral palsy.
Researchers at the University of Copenhagen have discovered a way to replace diseased and aged brain cells with new ones, which could lead to treatments for neurodegenerative diseases like Huntington's disease and multiple sclerosis. The study used humanized mice models to test the effectiveness of glial cell transplantation.
A new study found associations between socioeconomic status, childhood obesity, cognitive performance, and white matter microstructure. Obesity and cognition may play a role in these associations, with future research benefiting from considering multiple socioeconomic perspectives.
A new study from Washington University School of Medicine suggests that growing up in poverty may influence the wiring of a child's brain. The study found a link between neighborhood and household poverty and white matter tracts, which allow for communication between brain regions.
Researchers developed an innovative imaging approach using two-photon microscopy to analyze retinal microcirculation, revealing significant changes in blood flow that may indicate brain diseases. The study suggests that microcirculation in the retina could serve as a promising predictor of cerebrovascular diseases.
A team of researchers used MRI and audio recordings to demonstrate the association between caregiver speech and infant brain development. Infants who heard more words had slower-developing white matter, but eventually showed better linguistic performance when they began to talk.
Researchers found changes in grey matter volume in pain-processing areas of the brain, with decreased volume in regions responsible for inhibiting pain. The study also revealed altered signal transmission in the thalamus and correlations between brain structure and perceptional characteristics.
Researchers found that formalin fixation does not significantly alter the polarimetric properties of brain tissue, making it suitable for training machine-learning models. The study suggests that formalin-fixed brain tissue specimens can provide high-quality data for rapid and accurate diagnostic imaging in surgery.
A NYU Abu Dhabi study reveals that improvements in visual functions are linked to changes in white matter pathways and specific brain regions. The research confirms the potential of cataract surgery to improve visual function and brain plasticity, especially when performed at a younger age.
Researchers found that older children can learn visual tasks and exhibit increased white matter plasticity after surgery to remove congenital cataracts. This suggests that the window of brain plasticity extends beyond childhood and that all children may benefit from treatment.
A new study published in JAMA Network Open found that intensive blood pressure treatment significantly reduces the risk of adverse cerebrovascular events such as stroke. Participants with hypertension who received intensive treatment showed reduced white matter lesions and improved blood flow, indicating better overall brain health.