A model for avian lung ventilation, and the effect of accelerating stimulation in Japanese quail embryos

A simple stages model is proposed for the interval between the start of lung ventilation and the start of clicking in Japanese quail embryos. The model is extended to describe the effect of accelerating stimuli and is fitted to data sets from three different experiments. We see that the model provides a useful synthesis of the variety of results, and furnishes a framework for the analysis of further experiments.