Primate Behavior and Ecology

This paper introduces a framework to refine gesture classification in wild chimpanzees by splitting gesture types based on modifying features, assessing if this increases communication system information content.

The paper introduces MarmoAAP, a novel apparatus for studying cooperative behaviors in common marmosets, enabling high-throughput behavioral data collection and integration with video/audio for detailed analysis.

This study tracks 3D gaze and facial movements in marmosets to show how sex and familiarity influence social gaze patterns during interactions.

This study investigates whether vision contributes to food withdrawal in capuchin monkeys, finding that they use vision and touch to grasp and orient food items for eating.

The paper presents a dataset of 192 new primate occurrence records from Brazil's arc of deforestation, extending species ranges and identifying hybridization zones to support conservation efforts.

The paper investigates coping styles, personality, and genetic factors in long-tailed macaques, finding associations between COMT polymorphisms and coping strategies.

The paper investigates sex differences in stone tool use among wild white-faced capuchins, finding that male-biased tool use on one island is not due to physical, environmental, or social constraints.

The study examines social dynamics in vervet monkeys across three groups, finding stable differences in sociality and reciprocal grooming, with dispersing males adapting to group norms.

This study examines how social context affects delayed gratification in New Caledonian crows and Eurasian jays, finding species differences in reward selection under varying social conditions.

The paper estimates predation risk in wild anubis baboons using GPS data, finding adult males are more peripheral and isolated, contradicting the expectation that the dominant male would be centrally safe.

The paper develops an ethogram to analyze distress behaviors in humans after public conflicts using video recordings and compares them to nonhuman primate behaviors.

The paper compares sulcal morphology in the human and chimpanzee posteromedial cortex, identifying species differences in sulcus incidence, depth, and surface area.

The paper introduces a second phase of a brain imaging repository for nonhuman primates, providing high-resolution MRI data from nine species to support comparative neuroscience research and conservation.

This study compares coordination strategies in human and macaque pairs during a transparent decision game, finding that humans use dynamic turn-taking while macaques use static coordination, with one trained macaque pair showing dynamic behavior.

This study shows that submissive rats' multimodal cues increase prosocial choices by dominant rats in a reward-sharing task.

The paper shows that neural responses to social vocalizations in marmoset prefrontal cortex vary across different behavioral contexts, indicating flexible representations of social signals.

This study identifies gene regulatory differences linked to dominance rank and social bond strength in wild baboons, showing sex-specific effects and distinct immune responses to social factors.

The paper investigates how social status in rhesus macaques affects gene regulation, glucocorticoid physiology, and mitochondrial DNA phenotypes through specific behavioral interactions.

This paper introduces a method to simultaneously measure whole-brain activation in two socially interacting marmoset monkeys using functional MRI and finds neuronal synchrony in brain regions involved in social processing.

This study examines corpus callosum morphology in baboons across their lifespan, finding no age-related atrophy in old age, similar to other non-human primates.

The paper determines corresponding ages between humans and chimpanzees across the lifespan and finds that prefrontal cortex maturation timelines are not unusually extended in humans.

This study develops a chimpanzee brain reference template and processing pipeline to analyze structural MRI data, revealing age-related GM atrophy and hemispheric asymmetry patterns.

This paper introduces a semi-automated platform for training common marmosets in-home for behavioral neuroscience studies, enabling naturalistic behavior analysis with minimal experimenter intervention.

The paper examines sulcal morphology in the medial frontal cortex of primates to reveal evolutionary patterns and challenge previous assumptions about human uniqueness.

This study analyzes MRI data from 34 primate species to investigate the evolution of neocortical folding, finding a Brownian Motion model best fits the data and a stable fold wavelength across varying brain sizes.

The paper quantifies neuronal density and distribution across the marmoset cortex, revealing regional and laminar variations and their potential functional and developmental implications.

The paper quantifies prefrontal cortex (PFC) size in humans relative to nonhuman primates, finding humans have significantly larger PFC gray and white matter volumes compared to chimpanzees and macaques.