Before revision:   The mathematical implementation of such phenomenological postulates allows to infer quite simply a functional relationship between the mean firing-rate of the neural population and the concentration of any odorant as well as the statistical distribution of the sensitivity of any receptor neuron to any odorant across the population;
After revision:  In particular, it is assumed that the receptor neurons mean firing-rate scale monotonically with odorant intensity, and that the receptor sensitivities range widely across odorants and receptor neurons hence leading to highly distributed representations of the stimuli. The mathematical implementation of such phenomenological postulates allows to infer quite simply a functional relationship between the mean firing-rate of the neural population and the concentration of any odorant as well as the statistical distribution of the sensitivity of any receptor neuron to any odorant across the population;