Articles tagged with Prefrontal Cortex
Neurons generate brain waves at distinct frequencies to communicate between brain regions, reinforcing correct guesses and weakening incorrect ones. Researchers found that beta (9-16 Hz) and theta (2-6 Hz) frequencies are used in the hippocampus and prefrontal cortex during learning tasks.
A study of 62 preteen girls found that those who experimented showed stronger connections between the rostrolateral prefrontal cortex and posterior insula/putamen, linked to exploring actions and body state, respectively. This could help identify teens at risk for risky behaviors.
Teenage exploration and risk-taking can be attributed to dramatic changes in the brain, driven by the need for immediate reward. According to Dr. Beatriz Luna's research, the teen prefrontal cortex is not immature but rather overruled by heightened motivation centers.
Researchers used fMRI to show that autistic individuals have significantly different brain activity related to emotion regulation compared to non-autistic individuals. The study suggests that improving prefrontal cortex activity could help autistic people regulate their emotions and reduce severe symptoms.
Researchers found that adolescent binge drinking causes lasting damage to the prefrontal cortex's myelin sheaths, leading to impaired cognitive and behavioral control. This can lead to increased risk of alcoholism in adulthood and related psychiatric conditions.
A study by researchers at The Rockefeller University has identified a new class of brain cells that play a crucial role in regulating female social behavior in mice. These oxytocin-responsive neurons are found in the prefrontal cortex and may mediate other aspects of behavior in response to elevated oxytocin levels.
Damage to the prefrontal lobe is often overlooked but critical for socialization, emotional control and real-life decisions. Studies have shown that distinct areas of the frontal lobes are essential for complex human skills and behavior.
Researchers found that short-term environmental enrichment exposure can induce proliferation, activation, and maturation of doublecortin-positive cells in the prefrontal cortex of adult guinea pigs. This process may be involved in learning and memory associated with the prefrontal cortex.
Scientists have identified a specific electrical pattern in the brains of genetically identical mice that predicts how well individual animals will fare in stressful situations. This finding may help prevent mental illnesses linked with stress, such as post-traumatic stress disorder and depression.
A recent study suggests that adults' more highly developed cognitive skills can actually interfere with their ability to learn certain elements of a second language. This 'effort paradox' is thought to occur when adults try to analyze too much information at once, leading to difficulties in learning the morphology of an artificial lang...
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.
Researchers studied brain activity in a part of the brain involved in thinking about oneself and found that group dynamics can lead individuals to harm others outside their group. This is due to reduced medial prefrontal cortex activation when seeing moral statements, which correlates with increased likelihood of harming opponents.
Neurons in the prefrontal cortex and striatum synchronize their brain waves to form new communication circuits during category-learning, enabling rapid adaptation. This phenomenon likely precedes changes in synapses and underlies the human mind's flexibility.
A new study reveals that the brain achieves focused attention on faces or other objects by synchronizing activity in the inferior frontal junction (IFJ) with specific brain regions. The IFJ coordinates with the fusiform face area (FFA) and parahippocampal place area (PPA), suggesting a parallel process involving different areas.
Research suggests that prenatal origin of autism is related to disorganized cortical patches in the developing brain. The study found a 91% absence of cellular markers for several cortical layers in autistic case samples.
Researchers at Brown University discovered that working memory uses similar brain circuits to those involved in planning motion. They found that the caudate and dorsal anterior premotor cortex contribute to output gating, a crucial process for selecting from working memory. The study's findings provide insight into how the brain effici...
A team of Oxford University researchers has identified a unique brain area in the ventrolateral frontal cortex that is involved in advanced planning and decision-making processes. This area, which does not have an equivalent in monkeys, is also linked to language processing and 'multi-tasking'.
Researchers have identified a key 'teenage gene' that plays a role in mental health vulnerability, particularly during adolescence. The DCC gene's dysfunction has been linked to behavioral consequences that persist into adulthood.
A Mount Sinai study found that age-related cognitive decline is linked to energy in synapses in the prefrontal cortex. Estrogen treatment restored synaptic health and improved working memory in rhesus monkeys.
The study reveals that inhibition of parvalbumin-expressing prefrontal interneurons triggers fear behaviour, while activation reduces it. The researchers hope their findings will lead to new treatment strategies for posttraumatic stress disorder and anxiety disorders.
A team of Stanford neuroscientists and engineers found that a localized region of the prefrontal cortex converges color and motion signals to make two snap judgments: which sensory input is most relevant, and what action to take. This discovery confounds conventional wisdom on decision-making processes.
Researchers found that chronic fluoxetine administration can induce a 'juvenile-like' state in specific neurons of the prefrontal cortex, potentially leading to improved plasticity and neural function. This discovery may revolutionize the prevention and treatment of depressive disorders.
Researchers found that task orientation affects source memory effects in the right prefrontal cortex and hippocampus, while modulating item memory effects in the prefrontal cortex. The study highlights the possibility of the hippocampus contributing to intentional encoding of item-source associations.
Researchers found that alcohol intoxication reduces coupling between the amygdala and prefrontal cortex, impairing ability to accurately appraise environment and respond to social signals. This study provides insight into maladaptive behaviors seen in alcohol intoxication, including social disinhibition and aggression.
A new UCSB study published in the Journal of Neuroscience reveals that paying full attention and trying hard can impede performance. The study found that disrupting explicit memory resources, which are associated with conscious thought, can harm implicit memory processes, leading to poorer performance outcomes.
Researchers found a link between spontaneous mutations and impaired neurogenesis in the prefrontal cortex of people with schizophrenia. The study suggests that genetic damage can disrupt brain development and lead to early signs of the illness, such as impaired executive functions.
Researchers at MIT found that blocking activity in the infralimbic cortex prevents rats from learning to run a maze on autopilot. The study suggests a new approach to treating disorders of repetitive behavior by targeting this brain region.
Researchers found that parts of the prefrontal cortex take over when the hippocampus, a key learning and memory center, is disabled. The breakthrough discovery could potentially help develop new treatments for Alzheimer's disease, stroke, and other conditions involving brain damage.
A UC Berkeley study shows how the brain dynamically reallocates resources based on behavioral demands, optimizing performance. When searching for a person or object, various brain regions are activated, including those normally dedicated to abstract thought.
Researchers have discovered that stimulating one part of the brain with laser light can wipe away addictive behavior in rats and turn non-addicted rats into compulsive cocaine seekers. The study suggests a new therapy using transcranial magnetic stimulation could be effective for humans, offering hope for treating cocaine addiction.
Researchers at the University of Pennsylvania discovered that inhibiting the brain's filter can improve performance in creative tasks. Inhibiting the left prefrontal cortex reduced missed responses and increased correct answers by a second when completing an uncommon-use task.
A new study found that the brain's pattern of blood flow in the prefrontal cortex alters with age during multitasking. Healthy older people had a higher and more sustained increase in oxygenated haemoglobin, indicating increased brain activity. This change is associated with normal aging and may impact dual-task performance.
Researchers at Brown University have made the first direct measurements of cause-and-effect responses between the nonspecific thalamus and the prefrontal cortex. The study reveals that inhibitory neurons respond strongly to thalamic signals, leading to a pattern of excitation in the cortex that sustains attention and arousal over time.
A new brain study suggests that recognizing intentionality is the first step in moral computations, linking emotion to morality. The study found that adults can detect intentional harm within 60 milliseconds, triggering an emotional response.
A study published in the Journal of Neuroscience identified two brain regions involved in making rapid judgments about potential partners. The paracingulate cortex and rostromedial prefrontal cortex are active when people consider physical attractiveness and individual compatibility, respectively.
Researchers found that synchronized electrical signals between two key hubs in the brain's working memory circuit carry information about short-term visual memories. The study uses synchronized oscillations to distinguish between object identity and location, potentially overturning prevailing theory on how visual information is encoded.
A new study from MIT neuroscientists has found that the brain's prefrontal cortex has a small region responsible for controlling which habits are switched on at a given time. The researchers used optogenetics to inhibit this region, allowing them to break and form new habits in rats.
A study found that rats who had intermittent access to alcohol exhibited cognitive impairment similar to established alcoholism after just a few months. The researchers linked this impairment to the activation of a small group of neurons that inhibit executive control functions in the prefrontal cortex.
Researchers at the University of Wisconsin-Madison found that stress breaks the neural loops that store and retrieve short-term information, leading to distractions and decreased performance. This discovery sheds light on how stress impairs working memory and may inform new treatment approaches for prefrontal cortex dysfunction.
Researchers identify ventromedial prefrontal cortex as key area controlling belief and doubt, explaining why elderly are more prone to scams. Damage to this region, particularly after age 60, can lead to increased credulity and decreased ability to distinguish misleading information.
Researchers found that global brain connectivity, specifically with the left lateral prefrontal cortex, explains 10% of individual differences in intelligence. The study suggests that this connection enables flexible hub-like function, monitoring and influencing other brain regions to accomplish tasks intelligently.
Scientists have discovered an important clue on how the human brain filters out unimportant visual information and focuses on what's most useful. The study found that the prefrontal cortex is involved in both bottom-up and top-down attention, challenging traditional beliefs about separate areas of the brain controlling these processes.
UTMB professor Volker Neugebauer is conducting a four-year, $1.36 million study on the relationship between pain and brain functions, particularly the amygdala and medial prefrontal cortex. The investigation aims to understand how abnormal pain input affects the brain's emotional response and decision-making processes.
A new study found that long-term treatment with estrogen and MPA increased levels of a protein marker for synapses in the prefrontal cortex of aged rats. This contradicts previous research on human hormone therapy, which linked hormone replacement to an increased risk of stroke and dementia.
A study using brain data predicts which ads will be most effective, contradicting participants' own predictions. The medial prefrontal cortex region was found to predict successful ads, with campaign 'C' boosting phone calls thirty-fold.
Scientists have mapped the physical architecture of intelligence in the brain using a large pool of volunteer participants with brain injuries. The study identified specific brain regions and connections essential for general intelligence, planning, and executive function.
Researchers at Wake Forest Baptist Medical Center used fMRI to study brain activity before and after monkeys learned new memory tasks. They found that a small group of neurons specialized in the new task were activated while retaining existing information.
A study published in Neuron found that intensive computerized cognitive training exercises can improve complex cognitive functions and social cognition in people with schizophrenia. The training improved the ability to distinguish internal thoughts from reality, coinciding with increased activation in the medial prefrontal cortex.
A study published in the journal Neuron reveals that individuals with strategic decision-making skills, known as 'explorers,' use a specific region of the prefrontal cortex to calculate relative uncertainty. This brain area is not active in non-explorers, suggesting a specialized cognitive process for making uncertain decisions.
Neural recordings reveal brain activity that encodes visual categories in the posterior parietal cortex, outperforming the prefrontal cortex. The study suggests that the parietal cortex is more involved in the categorization process, particularly for spatial and visual tasks.
Jordan Grafman, director of traumatic brain injury research, has received the prestigious Humboldt Research Award for his significant contributions to understanding brain function and behavior. The award recognizes his work on cognitive neuroplasticity and its applications in medicine, rehabilitation, and psychology.
Researchers from the University of Bristol have discovered a chemical compound in the brain that can weaken synaptic connections between neurons. This finding may provide a potential explanation for memory loss associated with Alzheimer's disease.
Researchers found decreased connectivity between emotional behavior regions and an increase in connection between the caudate and prefrontal cortex in depressed brains. This disruption may lead to sustained negative thoughts and difficulty updating working memory.
A recent NIH-funded study found that children with autism have more brain cells and heavier brains compared to typically developing children. The researchers suggest that faulty prenatal cell birth or maintenance may be involved in the development of autism.
A study published by Yale University researchers found that when the brain's glucose levels drop, an area responsible for regulating emotions and impulses loses its ability to resist high-calorie food. This response is particularly pronounced in obese individuals, who exhibit a heightened desire for high-calorie foods.
Researchers at University of Bristol found that multiple brain regions work together to form memories, particularly in recognizing faces and names. The study's findings have implications for understanding memory disorders like Alzheimer's disease.
A new study published in Nature shows that the neural networks in the brains of middle-aged and elderly individuals have weaker connections and fire less robustly than in younger ones. However, the research suggests that this condition is reversible with the help of a medication called guanfacine.
A study found that daytime sleepiness is associated with decreased activation in the prefrontal cortex during visual presentations of enticing high-calorie food images. This impairment in brain function may lead to altered eating behavior and potentially contribute to obesity.
Researchers found that genetic variations can predict how persistently people will believe advice, even when it contradicts their experience. The study highlights the role of confirmation bias in decision-making, where people tend to distort experiences to align with pre-existing beliefs.
A multidisciplinary team found that patients with tumors in the right parietal cortex struggled to process categorical spatial information, leading to errors in mental rotation tasks. The left prefrontal cortex was also affected, causing difficulties in setting up specific programs within the brain for task organization.