Articles tagged with Human Behavior
A new computer model developed at the McGovern Institute for Brain Research at MIT has been shown to perform as well as humans on rapid visual categorization tasks, even making similar errors. The model follows the organization of the brain's visual system and can help neuroscientists explore brain mechanisms involved in human visual p...
Male crayfish bluff with weak claws to intimidate opponents and gain dominance, while females' claw size is an honest indicator of strength. This study reveals that dishonesty plays a more significant role in animal communication than previously thought.
Researchers found that high long-chain omega-3 intake is associated with increased grey matter volume in areas of the brain related to emotional arousal and regulation. This study suggests that omega-3s may promote structural improvements in brain regions linked to mood disorders.
Researchers at the Salk Institute found that brain area sizes must be optimally tuned to perform tasks, with underperforming mice exhibiting reduced tactile and motor behaviors. Genetic manipulation in mice revealed a correlation between area size and performance, which was reversed by genetic rescue experiments.
A study found that anti-ribosomal P antibodies, associated with SLE, induce depressive behavior in mice by interacting with the limbic system. Fluoxetine treatment reversed this effect, but haloperidol had no significant impact.
A study of 620 people with gastroenteritis found that those who developed IBS were more likely to experience high stress, anxiety, and perfectionism. Cognitive behavioural therapy may be an effective treatment for this condition, which affects up to 15% of adults in industrialised countries.
Researchers found that early brain degeneration can be reversed if prions are depleted in neurons, leading to improved cognitive function and reversal of neurological pathology. This discovery opens new avenues for targeting neuronal prion protein as a therapeutic approach and may enable early intervention in human prion disease.
A Cornell study found that chelation therapy can reduce learning and behavioral problems caused by lead exposure in young rats. However, the treatment also showed lasting adverse effects in rats with no lead exposure, raising concerns about its use in autistic children.
Researchers found that subliminal words can produce a priming effect, where subjects respond faster on tasks related to either the visual or auditory word. TMS applied to specific brain areas disrupted this priming effect, demonstrating top-down processing of subliminal information.
Despite advances in treatment, Alzheimer's care has remained consistent since Alois Alzheimer's first patient presentation in 1906. Non-pharmacological strategies like bright-light therapy and aromatherapy are still used today to manage symptoms.
A study by University of Chicago researchers found that female rats with a more apprehensive temperament are more likely to develop mammary and pituitary tumors and die earlier. The findings suggest that looking at links between behavior traits and cancer in humans may be crucial for research on the development of cancer.
A three-step prompting procedure, implemented consistently, significantly improves preschool child compliance. Instructors using the method report improved results when following a consistent approach, with children responding to instructions more effectively.
A pilot study by Yale School of Nursing and Child Study Center found that Parent Management Training (PMT) successfully controlled moderate to severe levels of oppositional behavior in children with TS, leading to a 51% decline in disruptive behavior. The results showed significant improvement compared to the control group.
Researchers found five proteins overexpressed and three underexpressed in response to chronic alcohol exposure, affecting programmed cell death, cholesterol balance, and signal transduction. The study suggests a progressive increase in behavior disruption with prolonged exposure, highlighting the potential for new therapeutic targets.
A massive 10-year study in Sardinia found no connection between Type A personality and heart disease, contrary to previous studies. The research measured the genes and traits of over 6,000 people aged 14-102, finding a strong genetic component for many traits.
A parent-based intervention program encourages sun-safe behaviors and discourages tanning among children with high-quality relationships between parents and children. Family variables such as compliance and monitoring levels also impact the effectiveness of the program.
A parent-based intervention program promotes sun-safe behaviors in children, especially when parents and children have a high-quality relationship. The program is most effective in families with a high-quality parent-child relationship, high level of compliance, and low negative communication.
Researchers found that bumble bees can adjust their behavior to estimate elapsed durations, crucial for decision-making tasks like feeding and communication. This ability is rare in the animal kingdom, previously known only in humans and other vertebrates.
Scientists studying the brains of flies, moths, and cuttlefish have made discoveries about the mechanics of how the brain regulates behavior. Researchers have identified specific brain chemicals and regions that allow for rapid color changes in cuttlefish, similar to the human motor cortex.
A new study at University College London found that humans often act irrationally when faced with difficult decisions, driven by emotional reactions. Participants were more likely to gamble at the threat of losing £30 than the offer of keeping £20, despite both options resulting in the same outcome.
Researchers at UW-Madison presented studies on the ineffectiveness of fish advisories, the role of sulfate-reducing bacteria in mercury contamination, and the long-term consequences of in utero exposure to methylmercury. The findings highlight the need for improved communication, funding, and media coverage to address these issues.
The substantia nigra/ventral tegmental area (SN/VTA) is activated by unexpected stimuli, emotional arousal, or the need to respond behaviorally. Novelty enhances learning in humans, suggesting a functional loop between novelty and hippocampal function.
Researchers discovered older meerkats introduce dead and injured prey before live food as pups learn to hunt, using calls to gauge age and ability. The helpers monitor pup behavior and adjust prey presentation accordingly.
A new treatment plan involving behavior modification and pharmaceutical treatment has shown marked improvement in nearly half of patients with medically unexplained symptoms. The treatment also emphasizes improved communication between patient and doctor, highlighting the importance of the doctor-patient relationship.
A new brain model, iSTART, describes how imbalanced brain mechanisms underlie autistic behaviors. Individuals with autism exhibit hyperspecific learning, under-aroused emotional responses, and breakdowns in adaptive timing, leading to symptoms like reduced emotional expression and emotional outbursts.
A new study published in PLoS Biology found that avoiding punishment activates the same brain reward centers as receiving a reward. Researchers used fMRI to scan the brains of humans performing an instrumental conditioning task, where participants could either lose or win money. The results showed that the medial orbitofrontal cortex (...
Researchers found 100,000-year-old shells with holes bored into their centers in Israel and Algeria, suggesting that beadworking was widespread long before the explosion of modern culture in Europe. The discovery supports the idea that modern humans developed behaviors gradually instead of emerging later in Europe.
The study, led by Dr Nathaniel Daw and Dr John O'Doherty, used fMRI scans to measure brain activity while subjects gambled for money. Most people switch between exploring and exploiting strategies seamlessly, making it hard to distinguish between them.
Broca's area plays a crucial role in organizing actions and processing hierarchical structures, according to researchers Etienne Koechlin and Thomas Jubault. Their experiments found that this executive function is distinct from the organization of temporal sequences of actions.
Researchers discovered that neurons in the lateral prefrontal cortex process information for future events to generate action plans, enabling monkeys to plan complex behaviors. The study provides new insights into the central function of behavioral planning in this higher brain region.
The Association for Psychological Science has changed its name from American Psychological Society to better clarify its scientific mission. The new name emphasizes the organization's commitment to psychological science and human welfare, as well as its growing international presence.
A McMaster University study found that employees are more willing to share knowledge with trusted colleagues who treat them fairly. The reluctance to share knowledge leads to a contagious tendency to hide important information, causing productivity to suffer.
New research at the University of Liverpool has found that men sense a preference shift in their female partners and find masculine men more threatening during their most fertile phase. Men only behave this way if their female partner does not use oral contraception and is therefore more fertile.
A study led by Binghamton University aims to address cardiovascular disease in rural women, who face unique challenges such as limited access to healthcare and healthy habits. Researchers will employ two techniques: community intervention and nursing interventions, tailored to individual readiness to change behavior.
Researchers propose a theory that the fusiform face area (FFA) recognizes faces based on selective processing of shapes of facial features. Their computational model and experimental studies support this idea, suggesting that face recognition can be achieved by hierarchical shape detectors.
A Rice University study found that women exposed to chemicals from fear-induced sweat performed more accurately on word-association tasks than those in neutral or no-sweat conditions. This suggests that human olfaction can detect chemical signals from fear, leading to more cautious behavior and improved accuracy.
Patients identified seven ideal physician behaviors: confident, empathetic, humane, personal, forthright, respectful, and thorough. Training physicians on interpersonal skills may improve patient outcomes.
A study of 150 healthy married couples found that hostility in women was associated with atherosclerosis, while controlling behavior in men or their wives was linked to increased hardening of the arteries. The findings suggest that low-quality relationships are a risk factor for cardiovascular disease.
A new study compares handedness of medieval English villagers to modern-day sample, finding that active individuals display a high degree of asymmetry. Researchers used skeletal analysis to determine changes in hand preference over time, shedding light on the evolution of right- and left-handedness.
Research by Dr. Robert Drago and Carol Colbeck found that both men and women engage in productive and unproductive bias avoidance behaviors. Productive behaviors minimize family commitments to improve work performance, while unproductive behaviors produce the appearance of commitment without actual benefits.
Researchers found that newborns (10-72 hours old) prefer speech over nonsensical words in a study led by Dr. Athena Vouloumanos. The infants showed increased sucking behavior when hearing human speech compared to speech-like analogues, suggesting an experience-independent component to their preference for speech.
Case scientists demonstrate that motor neurons' behavioral roles change depending on body positioning, with implications for developing robots and prosthetic devices. Their research provides the first demonstration of Bernstein's hypothesis in a behaving animal.
A study by Dr. Jill Halterman found that children with severe asthma symptoms often exhibit behavioral problems, such as anxiety and difficulty focusing, which can impact their learning. The research suggests that addressing both asthma and behavior issues simultaneously is crucial for effective treatment.
A study by Queen's University psychologist Mark Sabbagh found that Chinese preschoolers show better self-control than their North American counterparts. Executive functioning skills, which enable focus on goals despite distractions, develop more rapidly in Chinese children.
Researchers found that cholestasis is associated with a broad activation of immune cells producing TNF-alpha, leading to behavioral changes and alterations in neurotransmitter systems. The study provides a novel mechanism linking liver disease to CNS sickness behavior, potentially informing the development of therapeutic agents.
Scientists used fMRI to study how humans learn to associate brand preferences with rewards, finding key activity in the ventral midbrain and ventral striatum. The study sheds light on the neural mechanisms behind consumer behavior and advertising effectiveness.
A study published in Alcoholism: Clinical & Experimental Research found that genetic variations on chromosomes two and four may affect drinking behavior, potentially preceding alcoholism. The research team analyzed DNA from 158 families with a history of smoking to identify genes related to alcohol addiction.
Researchers found limited changes in brain gene activity in tame silver foxes compared to non-domesticated farm foxes. Tame foxes exhibited dramatic behavioral and physiological changes, but these were associated with only minor genetic alterations.
Scientists have found that injecting a specific amino acid into rats can alter their gene expression, raising hopes for potential treatments for diseases. The study also showed that certain nutrients can influence gene expression in animals even after birth, sparking interest in the role of diet in shaping our genes.
A recent study found that low-income pregnant Latinas are at risk of early-pregnancy drinking and related effects, contrary to stereotypes. The study, which analyzed drinking behavior among 100 pregnant women, suggests that cultural values and language barriers may contribute to this risk.
Researchers discovered 17 genes linked to human anxiety disorders, with many enzymes playing a crucial role in their function. This breakthrough study provides new hope for understanding and treating anxiety-related behaviors.
Researchers have discovered that NPY/AgRP neurons are crucial for regulating eating behavior and body weight. Eliminating these neurons in adult mice resulted in reduced appetite and significant weight loss, highlighting their importance in maintaining normal feeding behavior.
Researchers analyzed brain activity of rhesus monkeys to infer what they knew, finding novel nerve cells representing correct memory associations that persisted even after incorrect choices. Human memory relies on association, and behavioral performance may be influenced by external factors.
Dr. Harris-Warrick's lab will explore flexible movements in crustaceans using dopamine and serotonin modulators, shedding light on motor circuit flexibility and homeostasis. The award honors the late Sen. Jacob K. Javits' advocacy for neurological disorder research.
A team of scientists studied the motor network of marine snails and found that higher-order neurons employ a combinatorial mechanism to produce variations in movement parameters. This hierarchical architecture allows for the generation of large numbers of behavioral variants, a hallmark of brain function.
Researchers found that human subjects learned different levels of a video game in just 20 minutes, adapting to varying environmental difficulties. The study showed that people can rapidly reshape their learning process to best learn new movements.
Researchers at Yerkes develop a transgenic nonhuman primate model of Huntington's disease to study disease development and develop treatments and prevention options. The model will be used in high-resolution imaging scans and behavioral studies.
A study of 12 normal-weight individuals found that their eating behavior did not compensate for overeating, despite gaining weight. Instead, they maintained their usual eating patterns when returning to their normal environment.
Dopamine's prolonged effects may be key to understanding psychiatric conditions, which are characterized by persistently high brain messenger levels. Researchers found a second mechanism by which chronic dopamine affects the brain, possibly indefinitely.
Researchers tracked basking sharks using pop-up tags to study their diving behaviour. They found that sharks in shallow waters exhibit reversed behaviour compared to deep water, indicating a response to changes in zooplankton vertical migration.