Enhanced dynamic range in a sensory network of excitable elements
نویسندگان
چکیده
Sensory arrays made of coupled excitable elements can improve both their input sensitivity and dynamic range due to collective non-linear wave properties. This mechanism is studied in a neural network of electrically coupled (e.g. via gap junctions) elements subject to a Poisson signal process. The network response interpolates between a Weber-Fechner logarithmic law and a Stevens power law depending on the relative refractory period of the cell. The same phenomenon has been observed in two different excitable media: cellular automata and Hodgkin-Huxley networks. This amplification mechanism could also be implemented in artificial sensor devices.
منابع مشابه
Physics of psychophysics: Stevens and Weber-Fechner laws are transfer functions of excitable media.
Sensory arrays made of coupled excitable elements can improve both their input sensitivity and dynamic range due to collective nonlinear wave properties. This mechanism is studied in a neural network of electrically coupled (e.g., via gap junctions) elements subject to a Poisson signal process. The network response interpolates between a Weber-Fechner logarithmic law, and a Stevens power law de...
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