Results 91 to 100 of about 4,949,866 (357)

Biologically Inspired Motion Encoding for Robust Global Motion Estimation [PDF]

IEEE Transactions on Image Processing, 2017
The growing use of cameras embedded in autonomous robotic platforms and worn by people is increasing the importance of accurate global motion estimation (GME). However, existing GME methods may degrade considerably under illumination variations. In this paper, we address this problem by proposing a biologically-inspired GME method that achieves high ...
Sariyanidi, Evangelos, Gunes, Hatice, Cavallaro, Andrea   +2 more
openaire   +3 more sources

Biological condensates form percolated networks with molecular motion properties distinctly different from dilute solutions

bioRxiv, 2022
Formation of membraneless organelles or biological condensates via phase separation hugely expands cellular organelle repertoire. Biological condensates are dense and viscoelastic soft matters instead of canonical dilute solutions.
Zeyu Shen, Bowen Jia, Yang Xu, Jonas Wessén, Tanmoy Pal, H. Chan, Shengwang Du, Mingjie Zhang   +7 more
semanticscholar   +1 more source

Mechanisms of parasite‐mediated disruption of brain vessels

FEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira, Sílvia Arroz‐Madeira, Cláudio A. Franco, Sara Silva Pereira   +3 more
wiley   +1 more source

Dilation and Constriction of Subjective Time Based on Observed Walking Speed

Frontiers in Psychology, 2018
The physical properties of events are known to modulate perceived time. This study tested the effect of different quantitative (walking speed) and qualitative (walking-forward vs.
Hakan Karşılar, Hakan Karşılar, Yağmur Deniz Kısa, Fuat Balcı, Fuat Balcı   +4 more
doaj   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Crowding of biological motion stimuli

Journal of Vision, 2013
It is difficult to identify a target in the peripheral visual field when it is flanked by distractors. In the present study, we investigated this "crowding" effect for biological motion stimuli. Three walking biological motion stimuli were presented horizontally in the periphery with various distances between them, and observers reported the walking ...
Hanako, Ikeda, Katsumi, Watanabe, Patrick, Cavanagh   +2 more
openaire   +2 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Postural Stabilization Strategies to Motor Contagion Induced by Action Observation Are Impaired in Parkinson’s Disease

Frontiers in Neurology, 2018
Postural reactions can be influenced by concomitant tasks or different contexts and are modulated by a higher order motor control. Recent studies investigated postural changes determined by motor contagion induced by action observation (chameleon effect)
Elisa Pelosin, Elisa Pelosin, Ambra Bisio, Thierry Pozzo, Thierry Pozzo, Giovanna Lagravinese, Oscar Crisafulli, Roberta Marchese, Roberta Marchese, Giovanni Abbruzzese, Giovanni Abbruzzese, Laura Avanzino, Laura Avanzino   +12 more
doaj   +1 more source

Amblyopic perception of biological motion

Journal of Vision, 2008
Although a number of low-level visual deficits in amblyopia have been identified, it is still unclear to what extent these deficits extend throughout the visual processing hierarchy. Biological motion perception can be a useful measure of local and global visual processing since the point-light stimuli that are often used to study this ability carry ...
Benjamin, Thompson, Nikolaus F, Troje, Bruce C, Hansen, Robert F, Hess   +3 more
openaire   +2 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source