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The domain formation of curvature-inducing molecules, such as peripheral or transmembrane proteins and conical surfactants, is studied in thermal equilibrium and nonequilibrium steady states using meshless membrane simulations. These…

软凝聚态物质 · 物理学 2023-01-30 Hiroshi Noguchi

Regulatory networks consist of interacting molecules with a high degree of mutual chemical specificity. How can these molecules evolve when their function depends on maintenance of interactions with cognate partners and simultaneous…

种群与进化 · 定量生物学 2017-11-01 Tamar Friedlander , Roshan Prizak , Nicholas H. Barton , Gašper Tkačik

In this paper, we report on the generation and propagation of traveling pulses in a homogeneous network of diffusively coupled, excitable, slow-fast dynamical neurons. The spatially extended system is modelled using the nearest neighbor…

We study the dynamics of the structure of a formal neural network wherein the strengths of the synapses are governed by spike-timing-dependent plasticity (STDP). For properly chosen input signals, there exists a steady state with a residual…

神经元与认知 · 定量生物学 2015-05-18 Quansheng Ren , Kiran M. Kolwankar , Areejit Samal , Jürgen Jost

In many sensory systems, transmembrane receptors are spatially organized in large clusters. Such arrangement may facilitate signal amplification and the integration of multiple stimuli. However, this organization likely also affects the…

分子网络 · 定量生物学 2014-03-05 William Pontius , Michael W. Sneddon , Thierry Emonet

Direct numerical simulations are conducted to study the receptivity and transition mechanisms in a solitary wave boundary layer developing over randomly organized wave-like bottom topography. The boundary layer flow shows a selective…

流体动力学 · 物理学 2021-02-24 Asim Önder , Philip L. -F. Liu

In this paper a stochastic reaction diffusion system is considered, which models the spread of a finite population reacting with a non-renewable resource in the presence of individual based noise. A two-parameter phase diagram is…

概率论 · 数学 2009-01-27 Carl Mueller , Roger Tribe

Reaction-diffusion models with nonlocal constraints naturally arise as limiting cases of coupled bulk-surface models of intracellular signalling. In this paper, a minimal, mass-conserving model of cell-polarization on a curved membrane is…

斑图形成与孤子 · 物理学 2022-10-04 Pearson W. Miller , Daniel Fortunato , Matteo Novaga , Stanislav Y. Shvartsman , Cyrill B. Muratov

In this paper, we characterize the stability region of the two-user broadcast channel. First, we obtain the stability region in the general case. Second, we consider the particular case where each receiver treats the interfering signal as…

信息论 · 计算机科学 2016-02-24 Nikolaos Pappas , Marios Kountouris

Deep generative models such as diffusion and flow matching are powerful machine learning tools capable of learning and sampling from high-dimensional distributions. They are particularly useful when the training data appears to be…

高能物理 - 唯象学 · 物理学 2026-04-30 Zachary Bogorad , Ibrahim Elsharkawy , Yonatan Kahn , Andrew J. Larkoski , Noam Levi

Continuous attractor neural networks generate a set of smoothly connected attractor states. In memory systems of the brain, these attractor states may represent continuous pieces of information such as spatial locations and head directions…

无序系统与神经网络 · 物理学 2019-01-16 Chi Chung Alan Fung , Tomoki Fukai

Single cell experiments of simple regulatory networks can markedly differ from cell population experiments. Such differences arise from stochastic events in individual cells that are averaged out in cell populations. For instance, while…

生物物理 · 物理学 2010-07-29 María Rodríguez Martínez , Jordi Soriano , Tsvi Tlusty , Yitzhak Pilpel , Itay Furman

We present a simple biophysical model for the coupling between synaptic transmission and the local calcium concentration on an enveloping astrocytic domain. This interaction enables the astrocyte to modulate the information flow from…

神经元与认知 · 定量生物学 2007-05-23 Vladislav Volman , Eshel Ben-Jacob , Herbert Levine

The modelling of linear and nonlinear reaction-subdiffusion processes is more subtle than normal diffusion and causes different phenomena. The resulting equations feature a spatial Laplacian with a temporal memory term through a time…

偏微分方程分析 · 数学 2021-08-24 Jichen Yang , Jens D. M. Rademacher

Spatial gradients of diffusible signalling molecules play crucial roles in controlling diverse cellular behaviour such as cell differentiation, tissue patterning and chemotaxis. In this paper, we report the design and testing of a…

定量方法 · 定量生物学 2016-12-15 Yasushi Saka , Murray MacPherson , Claudiu V. Giuraniuc

Molecules have seemed like a natural fit to deep learning's tendency to handle a complex structure through representation learning, given enough data. However, this often continuous representation is not natural for understanding chemical…

机器学习 · 计算机科学 2021-03-12 Austin Clyde , Arvind Ramanathan , Rick Stevens

Glutamate and glycine are important neurotransmitters in the brain. An action potential prop- agating in the terminal of a presynatic neuron causes the release of glutamate and glycine in the synapse by vesicles fusing with the cell…

神经元与认知 · 定量生物学 2023-05-03 Swoyam Biswal , Vaibhav Wasnik

Identity, response to external stimuli, and spatial architecture of a living system are central topics of molecular biology. Presently, they are largely seen as a result of the interplay between a gene repertoire and the regulatory…

分子网络 · 定量生物学 2007-05-23 M. Cosentino Lagomarsino , P. Jona , B. Bassetti

The purpose of this paper is trifold -- to serve as an instructive resource and a reference catalog for biologically plausible modeling with i) conductance-based models, coupled with ii) strength-varying slow synapse models, culminating in…

神经元与认知 · 定量生物学 2022-11-02 James Scully , Jassem Bourahmah , David Bloom , Andrey L Shilnikov

Molecular communication (MC) allows nanomachines to communicate and cooperate with each other in a fluid environment. The diffusion-based MC is popular but is easily constrained by the transmit distance due to the severe attenuation of…

信息论 · 计算机科学 2021-04-28 Shuo Yuan , Jiaxing Wang , Mugen Peng