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Associative learning of non-nestmate cues improves enemy recognition in ants.
Curr Biol
December 2024
Department of Evolutionary Biology and Ecology, Institute of Biology I, University of Freiburg, Hauptstraße 1, 79104 Freiburg, Germany. Electronic address:
Recognition protects biological systems at all scales, from cells to societies. Social insects recognize their nestmates by colony-specific olfactory labels that individuals store as neural templates in their memory. Throughout an ant's life, learning continuously shapes the nestmate recognition template to keep up with the constant changes in colony labels.
View Article and Find Full Text PDFVoluntary wheel running decreases amyloidogenic pathway and rescues cognition and mitochondrial energy metabolism in middle-aged female 3xTg-AD mouse model of Alzheimer's disease.
J Alzheimers Dis
November 2024
Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
Background: Evidence supports the neuroprotective effects of physical activity, either in experimental animal models or humans. However, the biological mechanisms by which physical exercise modulates dementia and Alzheimer's disease (AD) progression are still unclear.
Objective: This study investigated whether long-term (6 months) of voluntary wheel running induces neuroprotective effects in the pathogenesis of AD in middle-aged (8 months) female mice, focusing on energy metabolism.
Minimal motifs for habituating systems.
Proc Natl Acad Sci U S A
October 2024
Department of Mechanical Engineering, Ruhr-Universität Bochum, Bochum 44801, Germany.
Habituation-a phenomenon in which a dynamical system exhibits a diminishing response to repeated stimulations that eventually recovers when the stimulus is withheld-is universally observed in living systems from animals to unicellular organisms. Despite its prevalence, generic mechanisms for this fundamental form of learning remain poorly defined. Drawing inspiration from prior work on systems that respond adaptively to step inputs, we study habituation from a nonlinear dynamics perspective.
View Article and Find Full Text PDFA formal analysis of the standard operating processes (SOP) and multiple time scales (MTS) theories of habituation.
Psychol Rev
September 2024
Faculty of Psychology, Applied Psychology Center, University of Talca.
In this article, we compare two theories of habituation: the standard operating processes (SOP) and the multiple time scales (MTS) models. Both theories propose that habituation is due to a reduction in the difference between actual and remembered stimulation. Although the two approaches explain short-term habituation using a similar nonassociative mechanism based on a time-decaying memory of recent stimulus presentations, their understanding of retention of habituation or long-term habituation differs.
View Article and Find Full Text PDFPlasma concentration of thrombopoietin in dogs with immune thrombocytopenia.
J Vet Intern Med
September 2024
Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, Alabama, USA.
Background: Immune thrombocytopenia (ITP) is a common cause of severe thrombocytopenia in dogs. The pathogenesis of nonassociative, primary ITP (pITP) appears complex, with ill-defined thrombopoietic response.
Objectives: Develop an immunoassay to measure plasma canine thrombopoietin (TPO) concentration and characterize TPO concentrations in dogs with pITP.
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