Julián León

ORCID: 0000-0002-3540-7148
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About
Contact & Profiles
Research Areas
  • Animal Vocal Communication and Behavior
  • Primate Behavior and Ecology
  • Animal Behavior and Reproduction
  • Marine animal studies overview
  • Child and Animal Learning Development
  • Functional Brain Connectivity Studies
  • Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
  • Mental Health Research Topics
  • Language and cultural evolution
  • Infant Health and Development
  • Amphibian and Reptile Biology
  • Wildlife Ecology and Conservation
  • Plant and animal studies

University of Neuchâtel
2021-2023

Swiss Centre for Scientific Research
2022-2023

Biomedical Research Networking Center on Neurodegenerative Diseases
2022

Research Institute Hospital 12 de Octubre
2022

Universidad Complutense de Madrid
2022

Universidad de Los Andes
2013-2014

Universidad de Los Andes
2013

How do animals learn to classify the world and what is role of social learning during this process? Here, we show that young sooty mangabeys, Cercocebus atys, Taï Forest, Côte d'Ivoire, rapidly an unfamiliar predator by attending others' alarm calls such knowledge retained over long periods. We experimentally exposed subjects chimeric models with both snake- leopard-like features, combined playbacks conspecific snake (N = 12) or leopard alarms 13). Adults classified chimeras as...

10.1016/j.isci.2022.104853 article EN cc-by-nc-nd iScience 2022-08-05

The social complexity hypothesis for the evolution of communication posits that complex environments require greater individuals to effectively manage their relationships. We examined how different socially uncertain contexts, reflecting an increased level complexity, relate variation in signalling within and between two species, which display varying levels fission–fusion dynamics (sympatric-living chimpanzees sooty mangabeys, Taï National Park, Ivory Coast). Combined may improve message...

10.1098/rsos.231073 article EN cc-by Royal Society Open Science 2023-11-01

Animal learning theory has been enormously influential in setting up laws of how individuals gradually learn associations and instrumentation by reinforcement. Yet, the rests on data collected from socially isolated laboratory animals, exposed to artificial cause–effect relations without visible agents. We review primate vocal literature find that animal performs poorly accounting for real-life evolutionarily relevant problem-solving. Instead, occurs when conspecifics act as event-causing...

10.1016/j.cobeha.2022.101153 article EN cc-by-nc-nd Current Opinion in Behavioral Sciences 2022-06-04

Epigenetics, hypothalamic-pituitary axes, environmental and metabolic influences, transgenerational plasticity govern social behavior. Cognitive research considers the brain's default mode network (DMN) as a central hub that integrates various cognitive processing domains responsible for emotion perception, empathy, theory of mind, morality. Hence, DMN is regarded "social brain." Upsurge in turmoil, anxiety, panic, depression, post-traumatic stress, hoarding, herd behavior, substance...

10.18103/mra.v10i3.2707 article EN Medical Research Archives 2022-01-01

Abstract Primates understand the meaning of their own and other species’ alarm calls, but little is known about how they acquire such knowledge. Here, we combined direct behavioural observations with playback experiments to investigate two key processes underlying vocal development: comprehension usage. Especifically, studied development con- heterospecific call recognition in free-ranging sooty mangabeys, Cercocebus atys , across three age groups: young juveniles (1–2y), old (3–4y) adults...

10.1007/s00265-023-03318-6 article EN cc-by Behavioral Ecology and Sociobiology 2023-05-01

How do primates learn to communicate? An influential, but largely untested model proposes that go through a pruning process, guided by social learning, during which they increasingly restrict alarm calling from initially broad ranges of animals few dangerous predators. To test this model, we conducted an experiment with free-ranging sooty mangabeys, Cercocebus atys atys, in systematically exposed different age groups models vipers and nonvenomous colubrid snakes. We found young juveniles...

10.1016/j.anbehav.2023.08.012 article EN cc-by Animal Behaviour 2023-09-09

How do animals learn the meaning of signals? In humans, links between linguistic utterances and underlying concepts are gradually acquired in infancy through iterated social learning processes, observation or interaction with others, but it remains unclear whether this process is shared other species. Here, we show that young sooty mangabeys, Cercocebus atys, to classify an unfamiliar predator by attending others’ alarm calls associations retained over long periods. field experiments,...

10.31219/osf.io/3vfkz preprint EN 2022-04-05

Primates understand the meaning of alarm calls their own and other species, but not much is known about how they acquire such knowledge. Rapid acquisition may be particularly important for younger individuals that incur higher predation risks lack experience in dealing with predators. Here, we experimentally studied development con- heterospecific call recognition sooty mangabeys, Cercocebus atys. We exposed subjects three age classes, i.e., juveniles (1–2y), older (3–4y) adults...

10.31219/osf.io/y2gvc preprint EN 2022-04-05

Primates understand the meaning of alarm calls their own and other species, but not much is known about how they acquire such knowledge. Rapid acquisition may be particularly important for younger individuals that incur higher predation risks lack experience in dealing with predators. Here, we experimentally studied development con- heterospecific call recognition sooty mangabeys, Cercocebus atys. We exposed subjects three age classes, i.e., juveniles (1–2y), older (3–4y) adults...

10.31219/osf.io/w7tn5 preprint EN 2022-04-05
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