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In this work, we use theoretical tools to study the effects of noise on the ability of a cell to chemotax and, more specifically, how bacteria cope. We first use simulations to show that adaptation time (filter cutoff frequency) affects the chemotactic performance of the cell and that mere exists an optimal adaptation time that allows cells to chemotax tire furthest. Having shown that the adaptation...
Summary form only given. Cells often use signal transduction networks to make decisions critical to proper cell functioning. However, the performance and efficiency of many cellular decision-making systems is relatively unclear. Here we use rate distortion theory as theoretical tool for studying performance-cost tradeoffs in cellular decision making. The rate distortion function provides a lower bound...
The proper function of many biological systems requires that external perturbations be detected, allowing the system to adapt to these environmental changes. It is now well established that this dual detection and adaptation requires that the system have an internal model in the feedback loop. In this paper we relax the requirement that the response of the system adapt perfectly, but instead allow...
Models from behavioral ecology, specifically foraging theory, are used to describe the decisions an animal forager must make in order to maximize its rate of energy gain and thereby improve its survival probability. Using a bioinspired methodology, we view an animal as a software agent, the foraging landscape as a spatial layout of temperature zones, and nutrients as errors between the desired and...
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