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Learning Dendritic-Neuron-Based Motion Detection for RGB Images: A Biomimetic Approach.
Biomimetics (Basel)
December 2024
Institute of AI for Industries, Chinese Academy of Sciences Nanjing, 168, Tianquan Road, Nanjing 211135, China.
In this study, we designed a biomimetic artificial visual system (AVS) inspired by biological visual system that can process RGB images. Our approach begins by mimicking the photoreceptor cone cells to simulate the initial input processing followed by a learnable dendritic neuron model to replicate ganglion cells that integrate outputs from bipolar and horizontal cell simulations. To handle multi-channel integration, we utilize a nonlearnable dendritic neuron model to simulate the lateral geniculate nucleus (LGN), which consolidates outputs across color channels, an essential function in biological multi-channel processing.
View Article and Find Full Text PDFPhylogeography and biological characterization of H12N2 virus isolated from whooper swan in Central China.
Front Microbiol
January 2025
College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong, China.
Wild birds and waterfowl serve as the natural reservoirs of avian influenza viruses (AIVs). When AIVs originating from wild birds cross species barriers to infect mammals or humans, they pose a significant threat to public health. The H12 subtype of AIVs primarily circulates in wild birds, with relatively few isolates reported worldwide, and the evolutionary and biological characteristics of H12 subtype AIVs remain largely unknown.
View Article and Find Full Text PDFRectification of planar orientation angle switches behavior and replenishes contractile junctions.
J Cell Biol
April 2025
Department of Physics and Astronomy, University of Denver, Denver, CO, USA.
In the early Drosophila embryo, germband elongation is driven by oriented cell intercalation through t1 transitions, where vertical (dorsal-ventral aligned) interfaces contract and then resolve into new horizontal (anterior-posterior aligned) interfaces. Here, we show that contractile events produce a continuous "rectification" of cell interfaces, in which interfaces systematically rotate toward more vertical orientations. As interfaces rotate, their behavior transitions from elongating to contractile regimes, indicating that the planar polarized identities of cell-cell interfaces are continuously re-interpreted in time depending on their orientation angle.
View Article and Find Full Text PDFActivation and modulation of the host response to DNA damage by an integrative and conjugative element.
J Bacteriol
January 2025
Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
Mobile genetic elements help drive horizontal gene transfer and bacterial evolution. Conjugative elements and temperate bacteriophages can be stably maintained in host cells. They can alter host physiology and regulatory responses and typically carry genes that are beneficial to their hosts.
View Article and Find Full Text PDFare endosymbiotic bacteria inducing various reproductive manipulations of which cytoplasmic incompatibility (CI) is the most common. CI leads to reduced embryo viability in crosses between males carrying and uninfected females or those carrying an incompatible symbiont strain. In the mosquito , the Pip causes highly complex crossing patterns.
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