Articles tagged with Memory Disorders
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A new study led by the University of California San Diego found that daily walking and moderate-to-vigorous physical activity significantly reduced the risk of developing mild cognitive impairment or dementia in senior women. With each additional 1,865 steps per day, the risk was lowered by 33%, while moderate-to-vigorous physical acti...
Columbia Engineering neuroscientists identified a specific neural mechanism in the human brain that enhances memory for emotional events. High-frequency brain waves in the amygdala and hippocampus are critical to this process, and disruptions can impair memory specifically for emotional stimuli.
Researchers developed HippoCamera, a new smartphone app that significantly improves memory recall by boosting attention to daily events. Users record videos and audio descriptions of everyday experiences, which are then replayed to reinforce memory consolidation.
A new study identifies a protein called GFAP as a possible biomarker for very early stages of Alzheimer's disease, which can be detected ten years before symptoms arise. This breakthrough discovery could lead to earlier diagnosis and treatment of the disease.
Researchers have discovered a human-approved medication that can bring back 'lost' memories in mice, suggesting a potential new approach to treating age-induced memory problems or early-stage Alzheimer's disease. The study used optogenetic approaches and the asthma drug roflumilast to revive memories stored in the hippocampus.
A recent study found that middle-aged individuals with more psychological symptoms are at a higher risk of developing dementia later in life. The study, which included data from over 68,000 Finns, suggests that symptoms of depression, exhaustion, and nervousness can increase the risk of dementia even as early as age 45.
Researchers found that neurons in the hippocampus represent space in a nonlinear hyperbolic geometry that grows outward exponentially with time spent exploring an environment. This discovery provides valuable methods for analyzing data on neurocognitive disorders involving learning and memory.
Researchers found that remote fear memories are permanently stored in connections between memory neurons in the prefrontal cortex. The study suggests that a dysregulation of fear memory consolidation can lead to chronic maladaptive fear in PTSD, affecting about 6% of the population.
A new study reveals that almost a third of long Covid patients suffer from persistent smell loss, with nearly a fifth experiencing loss of taste. The condition can significantly impact daily life, relationships, and overall well-being.
Researchers at the University of Bonn discovered that people with chronic epilepsy may have impaired dendritic integration, leading to less specific place cell firing and reduced ability to distinguish familiar from unfamiliar places. Administering a sodium ion channel inhibitor improved memory in animal models.
A new neuronal cell-based reporter system has been developed to identify compounds that inhibit histone deacetylase 2 (HDAC2) with minimal effect on its partner enzyme HDAC1. This innovation holds promise for dementia drug development by targeting the root cause of memory impairment.
A study followed over 7,000 Canadians for three years to find that being female, physically active, and not obese were key to maintaining excellent health. Factors such as high income and social support also played a crucial role in optimal aging.
Scientists at Beth Israel Deaconess Medical Center discovered gene usage similarities between COVID-19 patients' brains and aging brains. This study suggests a link between severe COVID-19 and accelerated brain aging, with potential implications for neurological follow-up in recovered individuals.
A Finnish study found that cumulative adverse psychosocial factors in childhood are associated with poorer learning and memory in midlife. Specifically, poor self-regulatory behavior and social adjustment in childhood linked to poorer learning ability and memory decades later.
A recent study found that individuals with higher intake of flavonols, found in fruits, vegetables, tea, and wine, experienced slower rates of cognitive decline. The study's authors suggest that the antioxidant properties of flavonols may contribute to this effect.
Researchers at Eötvös Loránd University developed two tests to assess age-related memory performance and neophobia differences in dogs. The memory test found that older dogs make more mistakes before finding food, while the novel object test revealed an increased tendency to avoid new objects with age.
A new study found that eligible older adults who participate in the Supplemental Nutrition Assistance Program (SNAP) have slower memory decline than those who do not participate. Researchers measured memory function every two years over 20 years and found that SNAP users had about two fewer years of cognitive aging over a 10-year period.
A study by Ural Federal University found that daytime naps and wakefulness both reinforce the formation of fear memories in response to emotional trauma. This research has significant implications for developing strategies for rehabilitating individuals with anxiety disorders.
Research suggests that glial cells in the cerebellum 'eat' neighboring neuronal elements to improve synaptic efficiency during motor learning. This process, known as phagocytosis, is enhanced during learning and memory tasks, leading to improved neural function.
A new study published in NEJM Evidence found that crossword puzzle training significantly improved cognitive function and daily activities, reducing brain shrinkage in individuals with mild cognitive impairment. The findings suggest that engaging with familiar activities like crossword puzzles may be more effective than computerized co...
Researchers aim to identify electrical activity in brain consolidation and test targeted brain stimulation to strengthen memories. The study could advance understanding of neural mechanisms involved in memory formation, potentially benefiting people with Alzheimer's disease.
A novel oxytocin derivative, PAS-CPPs-oxytocin, has been shown to improve cognitive function in mice with Alzheimer's-like symptoms. The derivative is delivered via intranasal administration and shows increased brain penetration compared to traditional intracerebroventricular delivery.
Researchers identified a kinase molecule that directs microglia activity, potentially treating neurodegenerative diseases like Alzheimer's and MS. The molecule, called spleen tyrosine kinase, targets plaque buildup and debris accumulation in the brain.
A recent study analyzed the records of over 33,000 dementia patients in Wales and found that those closest to their diagnosis were taking an average of three or more medications. This suggests a possible link between polypharmacy and the development of dementia.
The Northern New Jersey Traumatic Brain Injury System will provide ongoing care and research, aiming to improve learning and memory impairment in TBI patients. The system's site-specific study will examine the impact of aerobic exercise training on managing new learning and memory impairment.
A new study found that fewer Asian, Black, and Hispanic patients qualify for anti-amyloid monoclonal antibody treatments, which may slow Alzheimer's progression. The treatment's effectiveness depends on the presence of amyloid plaques, with lower incidence in minorities.
Researchers at Boston University have found a way to manipulate emotional memories using optogenetics, allowing them to rewrite and reduce the potency of negative memories. The study reveals that positive and negative memories are stored in distinct regions of the brain and communicate through different pathways.
A study of 226 Alzheimer's family caregivers found that 61.5% experienced depressive symptoms at diagnosis, with 1 in 3 showing worsening symptoms over five years. The risk was not linked to disease severity or individual backgrounds.
A study found that aberrant expression of MAO-B causes both peripheral and neuroinflammation in RA patients, leading to joint pain and cognitive impairment. Administering an MAO-B inhibitor called KDS2010 improved both joint inflammation and cognitive function in a RA animal model.
New research shows that COVID-19 infections can lead to a range of neurological complications in the first year after infection, including strokes, cognitive decline, depression, anxiety, and migraine headaches. The study analyzed over 14 million medical records and found that COVID-19 survivors were at increased risk of developing the...
Researchers at Linköping University discovered a biological mechanism that increases the strength of fear memories stored in the brain. This finding provides new knowledge on the mechanisms behind anxiety-related disorders and identifies shared mechanisms with alcohol dependence.
Scientists found that adolescent rats consuming low-calorie sweeteners like saccharin and stevia exhibited long-term impairments in memory. The researchers used real-life conditions and multiple low-calorie sweeteners to determine the effects on brain function and reward-motivated behavior.
A new study identified a specific enzyme, PDE11A, responsible for memory loss in social interactions with age. By manipulating this enzyme, researchers may develop therapies to prevent or reverse age-related cognitive decline.
A new Canadian study has found that older people with insomnia are at greater risk of developing memory decline and long-term cognitive impairment such as dementia. Insomnia was specifically related to worse memory performance compared to those with some insomnia symptoms alone or no sleep problems.
A large study found that obstructive sleep apnea is independently associated with an increased risk of cancer. Patients with more severe OSA were also at a greater risk of developing blood clots. Additionally, a second study linked OSA to a decline in mental processing powers, particularly in the elderly.
Researchers have developed a novel DNA-based method to identify people at greater genetic risk of developing Alzheimer's disease before symptoms appear. The method uses data on common DNA variants from over 7.1 million individuals and predicts a person's risk of Alzheimer's, depending on which DNA variants they have.
A team of researchers from Florida Atlantic University and Tel Aviv University are investigating the connection between neuroimmune serotonergic interactions and Alzheimer's-related mood disorders. By studying mice with AD-linked mutations, they aim to determine if immune-serotonin crosstalk plays a role in depressive traits.
A combination of anemia and weak muscles in older people increases the risk of death by 64% for men and 117% for women. The two conditions together pose a significant risk, especially for elderly women, according to a study published in Archives of Gerontology and Geriatrics.
A new music intervention called Musical Bridges to Memory sparks an emotional connection between patients with dementia and their caregivers. The program enhances social engagement and reduces neuropsychiatric symptoms in both patients and caregivers.
A recent study published in Nature Neuroscience found that a 20-minute non-invasive treatment regimen can improve both short-term and long-term memory in individuals 65 years and older. The treatment involves electrical brain stimulation delivered through scalp electrodes, and its effects were observed to last at least one month.
A new study found that Alzheimer's disease damages a circuit that connects the vision processing centers of each brain hemisphere, leading to disrupted visual memory. The researchers discovered neurons that extend axons across the corpus callosum, which connect the hemispheres, and showed that these cells play a crucial role in synchro...
Researchers found that increasing new neurons in mice with AD rescues their memory defects by restoring neural circuits and dendritic spines. Boosting neurogenesis may be a viable strategy to treat AD patients.
A study found a strong link between post-COVID loss of smell or taste and memory problems in patients. Those with the most severe sensory disorders performed worse in cognitive tests, especially memorization.
A study found that brain fog-like impairment is a problem in many animal species due to infection and disease, including humans. Cognitive impairments have been observed in birds, bees, rats, and other species, with various causes such as parasite damage, immune response, and malnutrition.
A new study by Columbia University Mailman School of Public Health found that sustained low wages during working years are associated with significantly faster memory decline in older age. Low-wage earners experienced approximately one excess year of cognitive aging per a 10-year period compared to those who never earned low wages.
Researchers found that microscopic blood vessel disease in the brain's white matter is associated with worse cognitive function and memory deficits in individuals with Alzheimer's. Lifestyle changes such as reducing hypertension, obesity, diabetes, and inactivity may help prevent or slow disease progression.
A new study demonstrates that glyphosate successfully crosses the blood-brain barrier and enhances TNF-α levels in mice. The herbicide is linked to increased production of soluble beta amyloid and reduced neuron viability, suggesting potential hazards to neurological health.
A new study led by researchers from the University of Michigan and Penn State College of Medicine compared two approaches for people with early form of memory loss: mnemonic strategy training and spaced retrieval training. Mnemonic strategy training showed increased brain activity in areas often affected by Alzheimer's disease, while s...
Cognitive impairment can lead to population declines, particularly for species relying on learning and memory. Infections can impact cognitive abilities differently across animals, depending on their survival strategy and pathogen manifestation.
Salk researchers identify neurotensin as a key molecule in the brain's valence assignment process, which associates good or bad feelings with memories. The discovery could lead to a better understanding of why some people retain more negative emotions than positive ones, and may pave the way for new therapeutic targets.
A world-first study has confirmed the link between Alzheimer's Disease and multiple gut disorders, revealing shared genetic architecture. The study suggests that abnormal cholesterol levels play a key role in both conditions, and may lead to new potential treatments for Alzheimer's and gut disorders.
A new imaging technique allows scientists to study mRNA molecules in the brains of living mice, revealing insights into how memories are formed and stored. The research could provide new information about diseases like Alzheimer's and help understand the process of memory generation and retrieval.
A Flinders University study reveals how a protein called tau transforms into a disease state, providing hope for preventing this process and reducing toxic effects on brain cells. The researchers identified 'master sites' in tau that govern subsequent modifications, leading to a similar state seen in Alzheimer's patients.
A comprehensive survey of scientific literature suggests that nearly all known biological pathways are linked to Alzheimer's disease. The study found that immune, metabolic and depression-related pathways were consistently cited as major mechanisms contributing to the disease.
Researchers are developing a health scorecard to predict dementia risk using brain scans, genetics, and biomarkers. The study will analyze diverse populations between ages 65-90, providing insights into contributing factors like diabetes or hypertension that can be addressed to modify the risk.
A recent study published in eLife has revealed that high levels of soluble tau protein impair signaling between neurons, leading to cognitive decline. The research suggests that targeting the binding site of dynamin, a protein that binds to microtubules, may rescue synaptic transmission and prevent memory impairment.
Researchers discovered a link between the astrocytic urea cycle and Alzheimer's disease memory loss. The study found that the urea cycle helps clean up toxic amyloid-beta aggregates, but its activation also causes the production of harmful byproducts, leading to neuronal death.
A new approach uses a single magnetic resonance imaging (MRI) brain scan to diagnose Alzheimer's disease with high accuracy, identifying changes in regions not previously associated with the condition. This method has the potential to revolutionize diagnosis and treatment, allowing for early intervention and improved patient outcomes.
A study published in JMIR Formative Research reveals that automated analysis of a common clinical drawing task can be used to estimate cognition in older adults from Japan and the USA. Researchers found that people with lower cognitive scores had more variability in their drawing speed, angle, and time spent paused during the task.
A study conducted by Kaunas University of Technology researchers analyzed how people with Alzheimer's disease process visual information from faces. The study found that brain signals in patients are significantly noisier, making it harder for them to focus and be attentive.