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| http://dx.doi.org/10.1289/EHP90 | DOI Listing |
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Social influence and consensus building: Introducing a q-voter model with weighted influence.
PLoS One
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Department of Physics, University of Calcutta, Kolkata, West Bengal, India.
We present a model of opinion formation where an individual's opinion is influenced by interactions with a group of agents. The model introduces a novel bias mechanism that favors one opinion, a feature not previously explored. In the absence of bias, the system reduces to a mean field voter model.
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Elife
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National Centre for Biological Sciences, Tata Institute of Fundamental Research, Bangalore, India.
Co-active or temporally ordered neural ensembles are a signature of salient sensory, motor, and cognitive events. Local convergence of such patterned activity as synaptic clusters on dendrites could help single neurons harness the potential of dendritic nonlinearities to decode neural activity patterns. We combined theory and simulations to assess the likelihood of whether projections from neural ensembles could converge onto synaptic clusters even in networks with random connectivity.
View Article and Find Full Text PDFLipid-induced condensate formation from the Alzheimer's Aβ peptide triggers amyloid aggregation.
Proc Natl Acad Sci U S A
January 2025
Yusuf Hamied Department of Chemistry, Centre for Misfolding Diseases, University of Cambridge, Cambridge CB2 1EW, United Kingdom.
The onset and development of Alzheimer's disease is linked to the accumulation of pathological aggregates formed from the normally monomeric amyloid-β peptide within the central nervous system. These Aβ aggregates are increasingly successfully targeted with clinical therapies at later stages of the disease, but the fundamental molecular steps in early stage disease that trigger the initial nucleation event leading to the conversion of monomeric Aβ peptide into pathological aggregates remain unknown. Here, we show that the Aβ peptide can form biomolecular condensates on lipid bilayers both in molecular assays and in living cells.
View Article and Find Full Text PDFBacopa monnieri Extract Diminish Hypoxia-Induced Anxiety by Regulating HIF-1α Signaling and Enhancing the Antioxidant Defense System in Hippocampus.
Neuromolecular Med
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Biochemistry and Molecular Biology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221 005, India.
Hypoxia is a significant stressor, and stabilized hypoxia-inducible factor-1α (HIF-1α) regulates the expression of numerous genes, leading to various biochemical, molecular, physiological and genomic changes. The body's oxygen-sensing system activates gene expression to protect brain tissues from hypoxia. Gamma-aminobutyric acid, an inhibitory neurotransmitter, regulates brain excitability during hypoxia through the activation of HIF-1 α.
View Article and Find Full Text PDFInterfacial Strain-Driven Large Topological Hall Effects in Supermalloy Thin Films with Noncoplanar Spin Textures.
ACS Appl Mater Interfaces
January 2025
School of Physical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India.
Materials exhibiting topological transport properties, such as a large topological Hall resistivity, are crucial for next-generation spintronic devices. Here, we report large topological Hall resistivities in epitaxial supermalloy (NiFeMo) thin films with [100] and [111] orientations grown on single-crystal MgO (100) and AlO (0001) substrates, respectively. While X-ray reciprocal maps confirmed the epitaxial growth of the films, X-ray stress analyses revealed large residual strains in the films, inducing tetragonal distortions of the cubic NiFeMo unit cells.
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