Fig. 7: Slow spike-frequency adaptation is necessary to reproduce the ORNs’ behavior.
From: Stimulus duration encoding occurs early in the moth olfactory pathway
A Illustration of the firing rate prediction process. The LFP was filtered with two different exponential kernels with time constants τ1 and τ2. A linear combination of the filtered values and the LFP, followed by a rectifying non-linearity, provides a prediction of the firing rate. This process is equivalent to directly convoluting the LFP with a linear filter composed of two exponential kernels and a δ-function. B Values of the optimal coefficients for all the fitted neurons. Points are color-coded by ORNs. C–E Predictions of the firing rate with and without the slow (800 ms) component. Predictions with the full filter closely match the empirical firing rate (dashed black line). The reduced filter predicts well the responses to short stimuli but fails to predict the response to the 2 s stimulus.
