An Integrated Neuronal and Mechanical Model of Fish Swimming

Several mechanisms involved in the generation and control of fish swimming have been combined in a simulated model. The model includes a spinal neuronal network based on neurophysiological data, a spring-and-damper muscle model, body mechanics including interaction with the surrounding water, and sensory stretch receptor feedback. The components have been simplified and combined to form a working integrated model. By varying a small set of parameters, corresponding to brainstem input to the spinal CPG, a variety of basic locomotor behaviors, like swimming at different speeds and turning can be produced.