Articles tagged with Brain Structure
A recent study by the University of Helsinki found that early exposure to alcohol changes the way genes function in the brains of mice, influencing brain structure. The timing of the exposure corresponds to human gestational weeks 3-6, and similar changes were observed in other tissues of the infant mice.
A study published in Brain Connectivity reveals that epilepsy disrupts the organization of brain networks and functional efficiency. The researchers found distinct patterns of reorganizational changes in the brains of individuals with epilepsy, including increased or decreased functional connections between brain networks.
A new study finds that people with cocaine addiction display altered patterns of brain activity and communication between regions, particularly in the left caudate. This impairment may lead to increased impulsivity and relapse rates, making it a key target for medication development.
Research suggests that adolescent brain exposure to alcohol can lead to changes in learning and memory, even after adulthood. The study found hyperactive long-term potentiation in the brains of exposed rats, which may contribute to impaired cognitive functions.
Researchers found a positive association between cardiorespiratory fitness and white matter structural integrity in the brains of older adults. Exercise, particularly walking, was identified as a potentially effective strategy for delaying cognitive decline and improving quality of life.
Research found that long-term exposure to fine particle air pollution, particularly at low levels, can cause subtle structural changes in the brain and increase the risk of covert brain infarcts. This association was strongest among older adults and those with relatively healthy brains.
A new study found that long-term exposure to air pollution is associated with smaller brain structure and covert brain infarcts in middle-aged and older adults. Exposure to PM2.5 particles was linked to increased risk of silent strokes and dementia.
Research by University of Michigan Medical School found that brain 'hubs' consistently attract information flow, shedding light on how the brain processes and transfers critical information. This discovery may help better understand principles of information processing in the brain.
Duke University researchers studied monkeys' eyes to understand how the brain processes distractions and predicts focus on goals. They found that changes in pupil size in response to distractors might predict how well the brain focuses on a goal.
Researchers found that self-affirmation increases activity in the ventromedial prefrontal cortex, leading to a steeper decline in sedentary behaviors. The study showed that people who were affirmed before receiving health advice demonstrated higher brain activity and improved behavior change.
Researchers at Carnegie Mellon University used fMRI scans to analyze brain activity while eight people read a chapter of Harry Potter. The result was the first integrated computational model of reading, identifying which parts of the brain are responsible for parsing sentences and determining word meaning.
Research reveals women have on average 43% more cells than men in the olfactory bulb, suggesting a biological basis for their superior olfactory abilities. This finding may have implications for reproductive behaviors and pair bonding.
A study reveals that female fruit flies use a small number of excitatory neurons and neurotransmitters like acetylcholine to decide whether to accept or reject male courtship. The decision-making process is found to be generated in three brain regions, suggesting a complex circuit involving sensory inputs and neural signaling.
Researchers identified six hub regions as crucial for cognitive function and found that damage to these areas caused widespread cognitive impairments. In contrast, lesions to other locations resulted in significantly less impairment. This study's findings may improve diagnosis and prognosis for brain injury patients.
A study published by the American Academy of Neurology found a link between sleep difficulties and rapid brain volume decline in adults. The research, which included 147 participants aged 20-84, revealed that poor sleep quality was associated with faster declines in brain regions including frontal, temporal, and parietal areas.
Researchers mapped the circuitry of dyslexia using functional neuroimaging tools, revealing widespread differences in brain connectivity among dyslexic readers. They found decreased connectivity within the visual pathway and between visual and prefrontal regions, as well as increased right-hemisphere connectivity.
Researchers at Northwestern University used Transcranial Magnetic Stimulation to improve memory in healthy adults, showing that specific brain regions can be stimulated to enhance learning abilities. The study's findings have potential applications for treating conditions like Alzheimer's disease and traumatic brain injury.
Chronic use of codeine-containing cough syrups is associated with brain white matter deficits, particularly in regions involved in impulse control. These changes are linked to increased impulsivity traits and correlate with the duration of CCS use.
People with schizophrenia struggle to convert desires into actions due to brain deficits affecting the caudate region. This impairment prevents them from making choices and behaving accordingly. The study's findings suggest that schizophrenics are 'stuck in neutral', wanting a normal life but unable to take necessary steps.
Researchers aim to improve stroke therapies by studying brain networks linked to movement, particularly hand and arm control. They will use techniques like fMRI and transcranial magnetic stimulation to map brain activity and stimulate specific regions.
Researchers found that somatosensory stimulation decreases the firing of pyramidal cells and increases interneuron activity, suggesting a suppressive effect on neuronal hyperexcitability. This study provides insights into signal processing in the hippocampus and explores potential therapeutic applications for brain disorders.
A new study found that amyloid buildup in one brain region can impair metabolism and activity in a distant, unaffected region. The findings suggest a long-distance effect of amyloid pathology on brain function.
A Rutgers researcher discovered consistent brain patterns in the human brain, regardless of activity level, which could lead to a better understanding of serious mental health conditions. The study's findings suggest that the prefrontal cortex, involved in high-level thinking, may be altered in people with severe mental illness.
The study found that electrical stimulation of the fastigial nucleus can increase Ku70 expression, leading to decreased Bax protein and reduced mitochondrial apoptosis. Injured brain tissue showed co-localization of Ku70 with Bax.
Researchers at Cedars-Sinai have created 3-D computer models to map the brain region involved in dystonia, identifying an anatomical target for further study. The models provide information for neurologists and neurosurgeons to consider when planning surgery and making device programming decisions.
A pioneering study aims to quantify eye movements and brain responses in adults with convergence insufficiency (CI) to understand the underlying mechanisms of vision therapy. The research hopes to lead to new therapies improving daily activities, such as reading comfortably for longer periods.
A neuroimaging study reveals reduced hippocampus brain volume in patients with schizophrenia, schizoaffective disorder, and psychotic bipolar disorder compared to healthy volunteers. Hippocampal volumes are associated with psychosis severity and cognitive performance.
Researchers found that females susceptible to MS produce higher levels of the blood vessel receptor protein S1PR2 than males, leading to the inflammation that causes MS. The study's findings have implications for developing new treatments, including a drug that disables S1PR2.
A study found that premature birth between 34-36 weeks' gestation results in differences in brain structure and cognitive skills compared to full-term births. Late preterm children showed more social, behavioral, and academic problems, as well as slower processing speed and difficulties with visuospatial reasoning.
Researchers find the lateral habenula controls sensitivity to the negative effects of drinking alcohol, leading to increased drinking behavior when the region is inactivated. This study provides new insights into addictive behaviors and may help identify individuals at risk of becoming problem drinkers.
A 'stop mechanism' was found to regulate drinking behavior by detecting thirst levels and preventing overdrinking. The study, published in Proceedings of the National Academy of Sciences, identified brain regions that determine the signals to stop drinking, potentially preventing complications from excessive water intake.
A new study found that estradiol hormone therapy prevented degeneration in key brain regions of postmenopausal women at heightened dementia risk. In contrast, Premarin was far less protective. The study suggests that early intervention with estradiol may help stave off dementia.
Stanford researchers have solved a riddle about the inner workings of the brain, revealing a previously unknown process that helps two brain regions cooperate when joint action is required. The study used a new approach to analyze large numbers of neurons and discovered that different regions of the brain keep results localized or broa...
A new study found that causal brain networks involved in fear regulation, imagery, and affect are also used for cognitive processing of religious beliefs. These basic networks evolved to mediate complex beliefs like those contained in religious practice.
Researchers analyzed 1.6 billion connections within the brain and found highest agreement between structure and information flow in the default mode network, responsible for inward-focused thinking. The study suggests that the structural architecture of the brain ensures automatic switching to something useful when not being used.
Researchers discovered that brain regions synchronize their activity to make it possible for people to pay attention, with the process likened to tuning multiple walkie-talkies to the same frequency. The findings have implications for understanding attention deficits in brain injuries or strokes.
Researchers found that certain brain regions exhibit enhanced gene activity levels, similar to those in young brains, allowing for the establishment of new connections. This ability may support lifelong learning and memory formation.
A new study reveals that queen paperwasps have smaller visual processing brain regions than workers, suggesting environmental factors shape caste differences. The research highlights the importance of considering individual brain differences within insect colonies for studying neuroecology.
Researchers at Tel Aviv University used fMRI to show that patients in a vegetative state can react emotionally to photographs of family and friends, suggesting they may be aware of their loved ones' presence. The study's findings provide hope for improved care and treatment for these patients.
Researchers identify lateral habenula as crucial in cost-benefit decisions, clarifying its role in daily choices and shedding light on depression treatment.
Research suggests that nicotine withdrawal is driven by a specific group of neurons in the interpeduncular nucleus. Therapies targeting these cells may help people quit smoking. The findings also hint at potential interactions with other substance-use disorders.
Researchers found that the brain processes visual input at a level of understanding its meaning, even if we never consciously perceive it. The study used EEG monitoring to show that participants' brainwaves showed a signature, or N400 waveform, when viewing objects hidden in silhouettes.
Extensive musical training affects brain structure and function, particularly when started before age 7. Research suggests that musical improvisation can rewire the brain, fostering plasticity and enhancing creativity, cognition, and learning.
A study published in Neural Regeneration Research found that Parkinson's patients with psychosis had greater white-matter fiber injury than those without psychosis. This difference may explain why psychosis often occurs in Parkinson's disease patients.
A new headpiece design could improve a depression treatment by allowing researchers to hit finer targets in the brain, up to twice as deep as today's systems. The system uses computer simulations and metamaterials to reduce pain and increase effectiveness.
A recent study found that the hippocampus helps individuals resist temptation by simulating future outcomes. Individuals with hippocampus damage, such as those with Alzheimer's disease or frontotemporal dementia, struggle to imagine long-term rewards, leading to impulsive decisions.
Researchers collect first solid evidence of brain activity pattern similarity between experimental conditions and everyday conversation. The study's novel method allows for real-life brain monitoring, potentially enabling applications like communication devices for patients with strokes.
Scientists at the University of Washington have identified a population of neurons in the brain that tell the brain to shut off appetite. In mouse trials, activation of these neurons led to immediate loss of appetite and reduced food intake.
A study found that migraine can cause long-lasting changes in brain structure, including increased risk of brain lesions, white matter abnormalities, and altered brain volume. Migraine with aura is associated with a higher risk of these changes compared to those without aura.
Researchers analyzed anatomical connectivity in the brains of subjects with Alzheimer's disease and healthy older individuals, finding widespread network disruptions. The study also identified asymmetry in the proportions of fibers connecting left and right cortical regions, which may worsen as the disease progresses.
Researchers used magnetoencephalography to track brain activity at high temporal resolution, revealing new distinctions in resting and active brain regions. The study provides novel insights into how brain networks function in cooperative groups, which is essential for better diagnosis and treatment of brain injuries.
Researchers have detected perfluoroalkyl substances (PFASs) in the brain tissue of polar bears, which could have severe impacts on human health. The study suggests that PFASs are crossing the blood-brain barrier and accumulating in all parts of the brain, highlighting the need for further research into their effects.
A team of researchers from Imperial College London has developed a map of a typical bird brain, showing how different regions are connected to process information. They discovered that areas important for high-level cognition, such as long-term memory and problem-solving, have similar wiring patterns to those in human brains.
Researchers at UCLA discovered that brain activity in the temporoparietal junction (TPJ) is linked to persuasiveness and idea sharing. This finding could lead to more effective public health campaigns, advertisements, and communication strategies.
A study by Duke University researchers has discovered that the brain's ventromedial prefrontal cortex, a small area between the eyes, calculates both emotional and economic values. The vmPFC plays a key role in value tradeoffs, such as determining whether to part with hard-earned money for a product.
A study using fMRI found that stroke patients' brains exhibit strongest activity in damaged hemisphere regions when viewing actions they struggle with. This suggests a potential therapeutic technique using action-observation to drive plasticity and improve motor function.
New research shows that craving drugs like nicotine can be visualized in specific brain regions, suggesting abnormal interactions between decision-making brain areas could underlie addiction. Dr. Alain Dagher's study found that the dorsolateral prefrontal cortex regulates cigarette craving in response to drug cues.
Researchers have identified the V5 region of the brain as the site of motion prediction, enabling humans to perceive objects at predicted locations despite visual processing delays. This discovery has implications for understanding and diagnosing disorders affecting motion perception.
Researchers from Queen Mary University of London used complex networks to map human brain connections, finding symmetrical neurons may drive synchronized activity across distant regions. This breakthrough adds to recent findings on neural network growth and development.
A study using fMRI found that first-year college students' brains showed habituation to alcohol-related stimuli and alterations in cognitive control networks. Changes in neural connections may influence decision-making and judgment abilities. The research suggests that exposure to alcohol cues can disrupt brain development, particularl...