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EPSRC Reference: GR/S61904/01
Title: Networks in biology: topology & dynamics
Principal Investigator: Barahona, Professor M
Other Investigators:
Researcher Co-Investigators:
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Department: Bioengineering
Organisation: Imperial College London
Scheme: Standard Research (Pre-FEC)
Starts: 01 October 2004 Ends: 30 September 2007 Value (£): 143,924
EPSRC Research Topic Classifications:
Logic & Combinatorics Mathematical Analysis
Non-linear Systems Mathematics Numerical Analysis
Theoretical biology
EPSRC Industrial Sector Classifications:
Communications Electronics
Healthcare Transport Systems and Vehicles
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Summary on Grant Application Form
We propose to systematically investigate the interdependence of dynamical behavior and network architecture in biologically relevant networks of interconnected nonlinear elements. To do this, we will follow two complementary avenues. On one hand, we consider systems whose well-known dynamics enables us to isolate the effect of topology on the dynamical outcome. A relevant example is the study of synchronicity in neuronal networks. We will investigate its relation with structural properties of the network and will also investigate the effect of noise and edge deletion. Because neuronal synchronicity plays a role in sensorial activity, these dynamical features will be interpreted in terms of input-output response of neuronal arrays to simple stimuli. The second direction will follow an alternative path aimed at deriving which connectivity features are relevant in metabolic (enzymatic) biochemical networks, a particular class of dynamics of extreme biological importance. These dynamical equations are intricately tied with the topological component, thus we will investigate the robustness of the dynamics beyond linear sensitivity analysis by exploring the influence of the topology on phase space. We will rephrase some of these dynamically relevant features in the higher-level language of (feedback) control.
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Organisation Website: http://www.imperial.ac.uk