Rhesus monkeys (Macaca mulatta) have shown the ability to monitor their own mental states, but fail the mirror self-recognition test. In humans, the sense of self-agency is closely related to self-awareness, and results from monitoring the relationship between intentional, sensorimotor and perceptual information. Humans and rhesus monkeys were trained to move a computer icon with a joystick while a distractor icon partially matched their movements. Both humans and monkeys were able to monitor and identify the icon they were controlling, suggesting they have some understanding of self-agency.
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http://dx.doi.org/10.1098/rsbl.2011.0536 | DOI Listing |
PLoS Pathog
December 2024
University Hospital Erlangen, Institute of Clinical and Molecular Virology, Friedrich-Alexander Universität Erlangen-Nürnberg, Germany.
Broadly neutralizing antibodies (bnAbs) against HIV-1 have been shown to protect from systemic infection. When employing a novel challenge virus that uses HIV-1 Env for entry into target cells during the first replication cycle, but then switches to SIV Env usage, we demonstrated that bnAbs also prevented mucosal infection of the first cells. However, it remained unclear whether antibody Fc-effector functions contribute to this sterilizing immunity.
View Article and Find Full Text PDFAm J Primatol
January 2025
School of Life Sciences, Sun Yat-Sen University, Guangzhou, China.
Intergroup competition for limited resources is a significant selection pressure that drives the evolution of animal society. The rhesus macaque (Macaca Mulatta) is the most widely distributed nonhuman primate in the world and can adapt well to environments disturbed by humans. In some areas, human provisioning provides ample food resources for rhesus macaques, leading to an increase in their population size, inevitably affecting competition patterns within and between groups.
View Article and Find Full Text PDFAm J Primatol
January 2025
Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, China.
Recent evidence challenging the notion of a sterile intrauterine environment has sparked research into the origins and effects of fetal microbiota on immunity development during gestation. Rhesus macaques (RMs) serve as valuable nonhuman primate models due to their similarities to humans in development, placental structure, and immune response. In this study, metagenomic analysis was applied to the placenta, umbilical cord, spleen, gastrointestinal tissues of an unborn RM fetus, and the maternal intestine, revealing the diversity and functionality of microbes in these tissues.
View Article and Find Full Text PDFCereb Cortex
December 2024
School of Medicine, Washington University in St. Louis, Fort Neuroscience Research Building, 4370 Duncan Ave., St. Louis, MO 63110, United States.
Arousal states are thought to influence many aspects of cognition and behavior by broadly modulating neural activity. Many studies have observed arousal-related modulations of alpha (~8 to 15 Hz) and gamma (~30 to 50 Hz) power and coherence in local field potentials across relatively small groups of brain regions. However, the global pattern of arousal-related oscillatory modulation in local field potentials is yet to be fully elucidated.
View Article and Find Full Text PDFAnim Welf
December 2024
Institute of Bioscience, Faculty of Medical Sciences, Henry Wellcome Building, Framlington Place, Newcastle University, Newcastle NE2 4HH, UK.
Environmental enrichment programmes are widely used to improve welfare of captive and laboratory animals, especially non-human primates. Monitoring enrichment use over time is crucial, as animals may habituate and reduce their interaction with it. In this study we aimed to monitor the interaction with enrichment items in groups of rhesus macaques (), each consisting of an average of ten individuals, living in a breeding colony.
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