Articles tagged with Ethology
A study discovered that a microRNA cluster regulates synaptic strength and is involved in controlling social behavior in mammals. The researchers found that the absence of this microRNA cluster results in increased sociability in mice.
Researchers have revealed the brain mechanism behind the uncontrollable itch-scratching cycle. A small subset of neurons in the periaqueductal gray region tracks itch-evoked scratching behavior. The study provides a starting point to decipher how itch is processed and modulated in the brain.
A recent study by Katherine Stavropoulos, an assistant professor at the University of California - Riverside, has confirmed a neural basis for cute aggression. The research found that the brain's reward system and emotion system are involved in the phenomenon, with participants experiencing higher levels of cute aggression towards cute...
A Champalimaud Centre researcher will explore how social environment and spatial factors influence an insect's defensive strategy, shedding light on brain mechanisms that underlie behaviour. The grant will fund novel experiments using fruit fly models.
A study published in PLOS ONE found that Indian peafowl crests efficiently sense motion and vibration at frequencies similar to those used during social displays. The research suggests that sensory stimulation of the crest feathers may complement visual and auditory perception of these displays.
Researchers have found that great apes and ravens develop planning capacities through associative learning, rather than human-like mental simulations. The new model shows how animals can learn to make decisions that lack immediate benefits but lead to meaningful outcomes in the future.
Researchers create compact system for fluorescence imaging at the tip of a fibre, enabling high-resolution images of brain cells and neuronal processes in deep brain areas. This breakthrough technology offers a minimally invasive approach to study sensory perception, memory formation, and severe neuronal diseases like Alzheimer's.
Scientists at the National Eye Institute have found that neurons in the superior colliculus are key players in allowing us to detect visual objects and events. The findings show that a specific population of neurons directly cause a behavior, and a mathematical model can predict behavior based on these neurons.
Researchers found that people with recent cancer diagnoses tend to prioritize short-term gains over long-term health benefits, leading to behaviors like excessive drinking, smoking, and infrequent tanning bed use. This 'discounting the future' phenomenon can be a significant risk factor for various health problems.
When working ants take a sick day, they alter their social interactions to protect vulnerable members. By changing their behavior, the colony reduces the risk of fungal infection and maintains social distancing.
A recent study on wild spotted hyaenas found that females dominate males because they receive more social support. The research revealed that social support is a key factor in determining dominance relationships between the sexes.
A team of researchers analyzed aerial video footage of bicycle races to determine the causes of changes in peloton collective behavior. They found two types of propagating waves within pelotons, driven by rider vision and sensory input, which challenge previous assumptions about aerodynamics' role in group dynamics.
Researchers found that communal-reared males were more competitive towards unrelated males and displayed higher exploratory tendencies. These traits are advantageous in a high-density population or when dispersing from the natal territory.
Exposure to neonicotinoids like imidacloprid disrupts bee colony growth by reducing worker activity, feeding and larval care. This results in impaired thermoregulation, increased mortality and reduced colony sizes.
An experimental compound has been shown to prevent and alleviate cognitive and mood problems in mice with Gulf War illness-like symptoms. Researchers found that the treatment can normalize dysregulation of glutamate in the brain, a potential contributor to the condition.
A new study reveals how vultures use social networks to gather flight information, making risky yet efficient choices. The research, led by Hannah Williams from Swansea University, tracked the movements of five vultures using special tag technology and found that they fly towards areas where other birds had been circling.
Postdoctoral fellows Vikram Gadagkar and Johannes Kohl have been awarded the $25,000 Peter and Patricia Gruber International Research Award for their innovative contributions to neuroscience. Their research focuses on trial-and-error learning mechanisms and neural circuits that control behavior.
Researchers have developed a novel testing system using zebrafish larvae to filter out substances with unwanted side effects. They found over 500 substances that modulated appetite, with most having specific effects without interfering with known systems.
A study published in PLOS Biology reveals a new neural circuitry linking olfaction to locomotion in lampreys, a parasitic fish that has decimated large populations of fish. The discovery demonstrates how smell can activate locomotor centers via two distinct brain pathways.
Researchers discovered a new brain mechanism underlying salience processing that facilitates associative learning and survival. The periventricular nucleus of the thalamus (PVT) is activated by salient stimuli, including novel stimuli and reinforcing cues.
Researchers found that Asian elephants possess numerical skills comparable to those in humans, unaffected by distance, magnitude, or ratios. The study used a touch-panel task to train an Asian elephant named Authai to judge relative quantities, with a success rate of 66.8%.
Scientists developed a new method to record limb control neural circuits in fruit flies using two-photon microscopy. The study found different patterns of activity across neurons during movement and behavior, including walking and grooming.
Cuttlefish control camouflage by directly acting on skin cells called chromatophores, producing local changes in contrast. Through statistical analysis of chromatophore output, researchers inferred motor neuron activity and higher levels of control, peering into the brain's camouflage system.
Researchers at Max Planck Institute for Brain Research and Frankfurt Institute for Advanced Studies developed techniques to reveal the cuttlefish brain's control network. By analyzing skin pattern dynamics, they inferred motor neuron activity and predicted higher-level control structures, providing insights into biological camouflage.
Researchers found nearly 200 gene variations linked to social behavior in sweat bees, including 21 clustered near genes implicated in human autism. The study suggests a core set of genes play an important role in shaping social behavior across species.
A study by Aarhus University researchers reveals that men's political attitudes towards inequality are influenced by their physical strength, not logic or reason. The results suggest that strong men are more likely to support unequal societies, as it aligns with their instinctual desire for status and resource control.
Researchers are testing pinger systems to deter diving ducks from gill nets, a major threat to sea bird populations. The study aims to determine the optimal frequency for these devices, which could save hundreds of thousands of birds annually.
A new study from the Monell Chemical Senses Center reveals that healthy animals' bodily odors change when they are near sick animals, potentially impacting social contacts and disease spread. The findings suggest that exposure to sickness-related odors can trigger protective responses in others.
A UC Davis researcher found that people behave similarly to others in simple reasoning games, driven by 'flocking' dynamics rather than rational thinking. The study used different games with varying levels of complexity, but all showed the same flocking behavior.
Researchers found that fruit flies freeze in response to threats at slow walking speeds, but run away when moving quickly. The team identified a single pair of neurons critical for this process, providing insights into the brain's defensive strategies.
In a study led by the Max Planck Institute for Evolutionary Anthropology, researchers found that active participation in group-hunts increased successful hunts and encouraged sharing of meat among chimpanzees. Oxytocin activation during hunting behavior also supported cooperative interactions.
Researchers analyzed ancient and modern koala and kangaroo teeth to understand diet changes across millennia. The study found that tooth wear patterns are indicative of dietary habits, not environmental factors.
Researchers studied ants' tunnel excavation to understand optimal traffic flow in crowded environments. They found that idleness, reversals, and uneven work distribution reduced clogs and improved performance. These strategies can be applied to improve movement in engineered systems like robot swarms.
A large behavioral study shows a correlation between higher social dominance and faster decision-making in non-competitive situations. EEG measurements also reveal distinct neural signals for promptness in high-dominance men compared to low-dominance individuals.
A new class of proteins called E3 ubiquitin ligases has been shown to reduce drug-seeking behaviors in a preclinical study. Smurf1, one of these proteins, is targeted to prevent cocaine addiction relapse.
Researchers found that taurine in energy drinks increased fear-reducing properties of alcohol but also affected social communication in zebrafish. Mixing energy drinks and alcohol may impair judgment and increase risks of fighting and risky behaviors.
The fox genome study identifies genomic regions associated with tame and aggressive behaviors, revealing potential links to domestication in dogs and Williams-Beuren syndrome in humans. A single gene, SorCS1, is found to be linked to specific behaviors in foxes.
Researchers study mice living in 'Souris City' device to identify distinct personalities based on behavior differences. The study reveals that dopamine-producing neurons play a key role in shaping individuality, with mice exhibiting radically different strategies for navigating the maze.
A fungus called Entomophthora muscae has been found to control the behavior of fruit flies, infecting their nervous system and causing them to climb to high points. The fungus feeds on the fly's fat stores before altering its behavior, eventually leading to the fly's death.
A study found people with depression have lower blood levels of acetyl-L-carnitine than healthy individuals. The findings suggest a potential new class of antidepressants could be developed to treat severe or treatment-resistant depression.
New studies demonstrate that chemical exposure can alter animal behaviour, impacting food chains. Researchers designed experiments using amphipods to investigate effects of tank size and shape on exploratory behaviours, finding variations between species in response to light stimuli.
Researchers at ULB's IRIDIA laboratory have shown that robots can emerge with the ability to correctly order tasks, enabling complex missions such as disaster rescue. This breakthrough demonstrates a complex cognitive skill emerging from group interactions, paving the way for autonomous robot swarms in various applications.
Researchers found that caught bluegills spend more time associating with others than uncaught ones. This sociability difference may impact the entire social structure of remaining fish populations.
Researchers found that sodium nitroprusside prevented behavioral alterations associated with schizophrenia in rats, suggesting a potential preventive treatment for young people at risk. The study used an animal model that mimics the condition in children and adolescents considered at risk for development of the disease in adulthood.
A study by Erol Akçay found that certain types of social networks can lead to cooperation's collapse, even in groups where most individuals are cooperators. This happens when individuals make random connections, triggering a decline in the overall cooperative nature of the network.
Researchers found that the elephant-nose fish generates negative images to filter out its own electrical interference, enabling it to better detect external signals and navigate its environment. This ability was demonstrated through neural recordings and behavioral experiments.
Researchers discovered that men with higher levels of testosterone have a stronger preference for luxury brands, such as Calvin Klein jeans over Levi's. This is because testosterone promotes behaviors associated with status-seeking and status-protecting, similar to animal behaviors like aggression.
Researchers discovered a neural circuit in parrots that may underlie their intelligence, similar to the pontine nuclei found in primates. The medial spiriform nucleus, located in birds, is comparable in function to the pontine nuclei and plays a key role in higher-order processing and sophisticated behaviors.
Researchers found that humans working in ORs follow primate patterns of hierarchy and gender, with conflicts mainly occurring between team members from different ranks. The study also showed that cooperation varied by gender composition of the team, with less cooperation when there were more male members.
Researchers discovered that worms' behavior at the time of experiencing stimuli influenced how their brains interpreted information, leading to a more sophisticated understanding of mechanosensory circuitry. The study paves the way for further investigations into how simple brains interpret sensory signals and turn them into actions.
Researchers found that American swamp sparrows accurately learn their songs 98% of the time, with a conformist bias strategy that filters out new song types. This leads to stable cultural traditions that can rival human customs in stability and longevity.
A recent rat model study found that preconception binge drinking can negatively affect future offspring's growth, social interactions, and pubertal development. The study also discovered that these effects can be passed down through generations, highlighting the importance of parental behavior in shaping offspring's traits.
Researchers suggest studying individuals, not groups, to understand human health and behavior, as averaging out data from a large group can offer only a snapshot of individual differences. The findings have implications for customizing health therapies and analyzing mental and physical disorders.
Researchers at Joslin Diabetes Center found that gut microbes contribute to signs of negative feelings and brain chemistry in obese mice. Antibiotics reversed these behaviors, demonstrating a significant link between the microbiome and mental health outcomes.
A new Oregon State University study reveals that human encouragement significantly influences how dogs solve problems. Search and rescue dogs outperformed pet dogs when encouraged by their owners, but only solved the task independently after receiving social cues from their owners.
Research by University of Exeter scientists found that cautious rockpool prawns are better at controlling a limited resource than bolder counterparts. This may be due to their risk-averse strategy, which involves staying near a food source rather than exploring new areas and risking competition with stronger rivals.
Researchers at Rockefeller University discovered that glial cells play a crucial role in regulating sleep and movement in worms, offering new insights into the neuroscience of sleep. The study found that glial cells help counteract the inhibitory effect of a specific neuron on movement.
Researchers found that older males are more successful at siring illegitimate children, suggesting a biological effect rather than behavioral choice. The study suggests post-copulation mechanisms may be driving this phenomenon, with females potentially storing sperm internally and 'deciding' which to use for fertilization.
Researchers at Kyoto University used machine learning to study the behavior of worms searching for food on surfaces with different temperature zones. The findings showed that the worms combined sensory information from environmental temperature and change in temperature to make decisions, similar to rational decision-making in humans. ...
Researchers at Karolinska Institutet discovered a previously unknown group of brain cells responsible for initiating and organizing aggressive behavior in mice. By stimulating or inhibiting these cells, the team was able to control aggression and even invert hierarchical status between dominant and submissive males.