A new tracking setup allows researchers to monitor the behavior of individual ants inside a colony. The first results demonstrate a link between age, spatial organization and division of labor, and quantify the dynamics of the colony's social network.
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Intrinsic timing of brood care in shell-dwelling cichlids.
Curr Biol
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Max Planck Institute for Biological Intelligence, 82152 Martinsried, Germany. Electronic address:
Brood care relies on interactions between parents and offspring. Emergence of nestlings from their nest has been hypothesized to rely on the readout by the parent of the maturational state of the young. Theoretical considerations predict a conflict: parents should push for early emergence, if possible, to reduce care demands and maximize the number of reproductive cycles, whereas offspring should delay leaving to maximize resource allocation and protection by the parents.
View Article and Find Full Text PDFDynamic planning in hierarchical active inference.
Neural Netw
January 2025
Institute of Cognitive Sciences and Technologies, National Research Council, Padova, Italy. Electronic address:
By dynamic planning, we refer to the ability of the human brain to infer and impose motor trajectories related to cognitive decisions. A recent paradigm, active inference, brings fundamental insights into the adaptation of biological organisms, constantly striving to minimize prediction errors to restrict themselves to life-compatible states. Over the past years, many studies have shown how human and animal behaviors could be explained in terms of active inference - either as discrete decision-making or continuous motor control - inspiring innovative solutions in robotics and artificial intelligence.
View Article and Find Full Text PDFCoordination and persistence of aggressive visual communication in Siamese fighting fish.
Cell Rep
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Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY 10027, USA; Department of Ecology, Evolution, and Environmental Biology, Columbia University, New York, NY 10027, USA. Electronic address:
Outside acoustic communication, little is known about how animals coordinate social turn taking and how the brain drives engagement in these social interactions. Using Siamese fighting fish (Betta splendens), we discover dynamic visual features of an opponent and behavioral sequences that drive visually driven turn-taking aggressive behavior. Lesions of the telencephalon show that it is unnecessary for coordinating turn taking but is required for persistent participation in aggressive interactions.
View Article and Find Full Text PDFProtein Intake and Its Association With Meal Patterns and Dietary Patterns in a Swedish Population of Older Adults.
J Hum Nutr Diet
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School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Background: Meeting protein intake recommendations is relevant for maintaining muscle mass. This study aimed to describe protein intake and its association with meal patterns and dietary patterns.
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Multiple crosslinked, self-healing, and shape-adaptable hydrogel laden with pain-relieving chitosan@borneol nanoparticles for infected burn wound healing.
Theranostics
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Department of Radiology, Functional and Molecular Imaging Key Lab of Shaanxi Province, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, Shaanxi, China.
Next-generation wound dressings with multiple biological functions hold promise for addressing the complications and pain associated with burn wounds. A hydrogel wound dressing loaded with a pain-relieving drug was developed for treating infected burn wounds. Polyvinyl alcohol chemically grafted with gallic acid (PVA-GA), sodium alginate chemically grafted with 3-aminobenzeneboronic acid (SA-PBA), Zn, and chitosan-coated borneol nanoparticles with anti-inflammatory and pain-relieving activities were combined to afford a nanoparticle-loaded hydrogel with a PVA-GA/Zn/SA-PBA network crosslinked via multiple physicochemical interactions.
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