Articles tagged with Animal Learning
A recent study found humpback whale entanglements in BC fish farms are extremely rare, with only eight instances over 13 years. Young whales' curiosity may be a contributing factor, according to researchers.
A recent study in the Journal of Dairy Science found that training dairy cows with positive reinforcement can improve their emotional state and overall welfare. The researchers trained Holstein dairy heifers using food rewards and observed increased anticipatory behaviors and play, indicating a positive experience for the animals.
Researchers found that bumblebees can learn multi-step tasks through social interaction, even when struggling individually. The study revealed that bees could acquire complex behaviors beyond their individual cognitive capabilities, challenging the traditional view of human exclusivity in social learning.
A study by researchers at the University of Wyoming and Max Planck Institute of Animal Behavior found that migrating animals refine their behavior with age, suggesting experiential learning plays a crucial role in successful migration. As young birds explore new places during migration, they gradually adopt more direct routes, resultin...
Desert ants of the Cataglyphis genus possess abilities that distinguish them from other creatures: they can orient themselves to the Earth's magnetic field. Researchers discovered this and found it is primarily processed in the ant's internal compass and mushroom bodies. The study shows that information about the magnetic field serves ...
A long-term study on wild orangutan males found that habitats with plentiful food increased the likelihood of social learning and cultural innovation. The researchers discovered that individuals from areas with high food availability spent more time peering at others, suggesting an animal's environment modulates social learning.
A new study found that relocated songbird chicks can successfully learn the diversity of songs they need to communicate and survive. Despite an initial lack of song diversity, the population recovered as it increased in size, suggesting that translocating nestlings may not lead to long-term problems.
Anemonefish use stripe patterns to identify members of their own species and defend against intruders. Young common clownfish can recognize fish with two or three white bars as competitors and bully them to keep their territory.
New research found that rapid-acting antidepressants modulate affective biases associated with learning and memory. The study proposes a neuropsychological mechanism explaining both immediate and sustained effects of these drugs.
A recent study published in Nature reveals the complex process of credit assignment in the brain, where dopamine plays a crucial role in linking specific actions to rewards. The research shows that the brain's reward system rapidly alters behaviors through trial and error, fine-tuning actions to improve sequences.
Researchers found that Eurasian jays settle for less preferred food options when rivals are present, while New Caledonian crows consistently choose the better, delayed reward. The study suggests that species' social tolerance and competition levels influence self-control in animals.
Researchers found that brittle stars, brainless marine creatures, can associate darkness with food and react accordingly, demonstrating classical conditioning. They retained this association even after a break from training, suggesting potential learning capabilities in these animals.
Researchers discovered that cerebellar nuclei make a surprising contribution to associative learning by strengthening connections with mossy fibers. Optogenetic experiments also showed that the nuclei can support well-timed learning. The study's findings have implications for understanding cerebellum function and potential treatments f...
A recent study at Eötvös Loránd University found that 'smarter' dogs process information similarly to humans, with object appearance mattering as much as its location. The researchers measured spatial bias in 82 dogs and found that those with better cognitive performance linked objects more easily to places.
Researchers have discovered that traumatic memories create new neural networks and associations between distinct networks, enabling fear-based learning and recall. The study used optical and machine-learning approaches to visualize the dynamics of brain activity during memory formation.
New research from Cold Spring Harbor Laboratory explores how adult brains adapt through critical periods of learning, such as caring for young. MECP2 dysfunction causes neurodevelopmental disorder Rett syndrome, but the study finds that brain circuits can be rapidly rewired in adults.
Researchers discovered that monk parakeets possess a unique tone of voice, known as a voice print, similar to humans. This finding raises the possibility that other vocally flexible species may also have a voice print.
Scientists demonstrated that Caribbean box jellyfish can acquire the ability to avoid obstacles through associative learning, a process in which organisms form mental connections between sensory stimulations and behaviors. The study suggests that combining visual and mechanical stimuli is required for associative learning in jellyfish.
Caribbean box jellyfish have demonstrated complex learning capabilities, including associative learning and memory formation, despite having only one thousand nerve cells. This discovery sheds new light on the evolutionary success of jellyfish and raises questions about the universality of advanced learning mechanisms in animals.
In a new study, researchers deciphered mice's behavior during reward-based learning tasks, finding they persistently blend multiple strategies. The findings suggest mice do not fully adopt optimal approaches, and their ability to shift between strategies is crucial for understanding their decision-making process.
A new study published in Science finds that advanced vocal learners in songbirds are also superior problem solvers, with a strong correlation between the two abilities. Starlings, blue jays, and catbirds were ranked as top vocal learners, with larger brains relative to their body size found in more complex species.
A study involving wolves and dogs found that both species can remember where people hid food if they observed the hiding process. However, wolves outperformed dogs in finding caches, suggesting differences in traits like persistency and food-related motivation.
Researchers tested memory abilities of bonobos and humans in a series of experiments, finding that humans can learn to distinguish short sequences nearly immediately, while bonobos struggle to retain information and exhibit difficulty learning sequences.
Researchers found that locusts have a clear preference for certain odors, such as grass and banana, while avoiding others like almond and citrus. They developed a model explaining how innate and learned preferences are generated in the locust's olfactory system.
Researchers have discovered that Heliconius butterflies can learn spatial information at large scales, suggesting complex learning skills may be more common in insects. The findings provide the first experimental evidence of spatial learning in any butterfly or moth species.
Biologists found that glyphosate impairs aversive learning in bumblebees, reducing their ability to associate threats with visual cues. This impairment could increase mortality rates and impact colony success.
Researchers found that fruit flies prefer larger quantities, but struggle to distinguish between 3 and 4 objects, highlighting the importance of ratio perception. LC11 neurons are essential for comparing quantities in fruit flies.
Researchers found that migrant male orangutan males use 'peering' behavior to observe local individuals and learn about new ecological knowledge, including how to process difficult-to-eat foods. This ability provides a survival advantage and is likely ancestral in the hominin lineage.
Researchers found that bumblebees use both vision and smell to navigate, with scent marks playing a crucial role in pinpointing the nest entrance in visually ambiguous situations. In experiments, bumblebees overwhelmingly focused on locations suggested by scent marks when visual landmarks were conflicting.
In the absence of visual landmarks, desert ants build higher nest hills to facilitate homing of foraging nest mates. This study reveals that artificial landmarks can replace natural ones, highlighting the ants' remarkable navigation abilities.
A new study by Emory University neuroscientists reveals that oxytocin plays a key role in male zebra finches' learning to sing by imitating their elders. The hormone influences young birds' preference for certain 'voice coaches', shedding light on the neural underpinnings of social vocal learning.
Researchers at Sainsbury Wellcome Centre found that instinctual exploratory runs enable mice to learn a map of the world efficiently. The study demonstrates how biological brains can learn faster and more efficiently than AI agents by focusing on salient objects.
Researchers found that enhancing NMDAR function via increased serine racemase expression improved attention and cognitive flexibility in middle-aged rats. Upregulating serine racemase in the medial prefrontal cortex also increased glutamatergic synaptic transmission, including NMDAR activity.
Researchers found that a neuropeptide called GLWamide regulates feeding in jellyfish, while myoinhibitory peptide (MIP) does the same in fruit flies. The discovery highlights the deep evolutionary origins of a conserved satiety signal.
A recent $800,000 grant from the Missouri Department of Economic Development will train 300 MU students as part-time nurse assistants at MU Health Care. This three-year initiative will create a paid opportunity for nearly 100 MU students each year to earn work experience and reduce the need for student loans.
Researchers discovered that even in the absence of predators, escape events occur frequently but rarely spread to many fish. The study suggests that this robustness to false alarms is due to dynamic adjustments in sensitivity to socially acquired information.
A team of researchers developed a dynamical model that explains how animals learn over time, contradicting previous theories. The multi-dimensional model shows that learned associations are not mediated solely by strength but by multiple nearly independent pathways.
A new study found that loss of Menin in the hypothalamus drives physiological aging in mice, including cognitive decline and reduced lifespan. However, supplementation with the amino acid D-serine reversed these age-related changes, improving skin thickness and bone mass.
Researchers discovered that great apes deliberately spin themselves to dizzy, mimicking human behaviors like whirling dervishes. This study suggests that humans may have inherited the need for altered states from their evolutionary ancestors.
Researchers found that young honey bees who followed dances of older bees improved their performance, reducing disordered dances and increasing orderly ones. Social signal learning refines behaviors for local conditions, suggesting it's advantageous for novice dancers to learn from experienced ones.
Researchers at the University of California - San Diego found that honey bees use a 'waggle dance' to communicate the location of food sources, and that this behavior is improved by learning and culturally transmitted. The study demonstrates the importance of early social signal learning in non-human spatial referential communication.
Researchers found that bumblebee colonies adopt and prefer specific solution methods to a puzzle box problem, demonstrating the importance of social learning. The study suggests that bees with prior experience can teach others, leading to the spread of behavioral approaches within the colony.
Researchers successfully recorded brain activity from freely moving octopuses, using implantable data loggers and electrodes. The study provides key findings on the neural mechanisms controlling octopus behavior, including patterns of brain activity similar to those in mammals.
Researchers found that rats adopt a non-greedy strategy to balance speed and accuracy, sacrificing immediate rewards for improved learning outcomes. The study suggests that slower reaction times lead to faster learning and higher rewards in both experimental and simulated environments.
In a controlled experiment, researchers found that Goffin's cockatoos recognize when multiple tools are required to extract seeds from a fruit. The birds were able to adapt their tool use depending on the situation and transport the tools as a set on an as-needed basis.
Researchers found muskies' size, boldness, and exploration levels are linked to their likelihood of striking. Anglers should prioritize catch-and-release and best practices to protect these traits.
A Florida Atlantic University study found that urban noise exposure during development affects the color of songbirds' beaks, which influence social interactions and mate choice. Males developed less bright beak coloration, while females developed brighter orange coloration than untreated birds.
Researchers found that differences in epigenetic DNA methylation predict behavioral differences between dogs better than genetic markers. Epigenetics are more informative for behavior than genetics, and the results open up new possibilities for screening and selecting desired behavioral traits in companion or service dogs.
A study of parrot vocal learning reveals species-specific differences in mimicking human speech, with some birds using words in context. Researchers also found that age and sex are weak predictors of vocal mimicry, highlighting the importance of conservation efforts for these complex communicators.
Researchers found that fertilizers change the electric field surrounding a flower, affecting bees' ability to navigate and feed. This alteration lasts for up to 25 minutes and can persist beyond a single use of chemicals.
A study published in The EMBO Journal reveals that the anterior cingulate cortex is activated in female mice acquiring maternal behavior through repeated experience with pups. This discovery provides a potential basis for developing therapeutic options for postpartum depression and other conditions disrupting mother-child bonding.
Researchers found that harbour seals can discriminate between regular and irregular rhythmic patterns, as well as fast and slow tempos. This ability suggests that seals possess a sense of rhythm, which may be linked to their vocal learning capabilities.
A recent study found that juvenile pied flycatchers in Europe can distinguish their own population's song dialects even at 12 days old. This ability is thought to aid in attracting mates and preventing learning other species' songs, highlighting the remarkable specificity of bird behaviors.
A study of 16 cats found they can differentiate their owner's voice from a stranger's, even when tone is changed. This suggests that cats form strong bonds with their owners based on experience of the speaker's voice.
Researchers propose a broader definition of learning that includes behavioral adaptation to environmental features, enabling collaboration across fields and promoting new research. This 'mechanism-free' approach highlights the importance of system-level responses to environment in various domains.
A team from UNIGE and EPFL discovered that too much or too little motivation can blur sensory information and affect decision-making. In a state of hyper-motivation, rodents performed poorly, while moderate motivation led to optimal choice. These results open up new perspectives in learning methods.
A study by Oregon State University found that dogs with owners who have high expectations and respond well to their behavior are more social, secure, and persistent problem solvers. The research suggests that understanding a dog's needs is crucial for raising secure and resilient dogs.
A study by Lauren Stanton and colleagues found that less bold raccoons learned faster than bolder ones. In a cognitive test, the calmer animals successfully navigated a cubicle to obtain rewards, outperforming their more aggressive counterparts.
Researchers discovered an electric signal in the hippocampus triggered by novelty, inducing a transition from memory to learning states. The signal may work as a switch to enable the brain to balance forming new memories and recalling familiar ones.
A recent study by the University of Exeter reveals that honeybees rely on both color and pattern to identify flowers. The researchers found that bees can effectively distinguish between different flowers using a combination of these elements, suggesting that flowers don't need to evolve many different petal colors.