A Model for Decision Making in the Insect Nervous System

Little is known about the neuronal mechanisms for selecting behavioural outputs appropriate to ongoing conditions. We present a model in which decisions are made by a concensus between the inputs at each stage in the system, not by a few neurones in a single centre. The stages are interconnected by loops of varying lengths, each with specific control functions. Neuromodulators and hormones contribute to the overall output by altering excitability but no single input is necessary and sufficient for producing any output.

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