Figure 11.

Simulations illustrating the effect of model mismatch on RF estimates. (A) True spectro-temporal receptive field used in the simulations. (B) Estimates obtained using a linear estimator for a threshold linear, a threshold-quadratic, and a threshold cubic-Poission model with rate estimated from 20 trials (p(spike) = 0.1). Stimuli were dynamic ripples, a sound class modulated sinusoidally in both the temporal and spectral domains. [·]₊ denotes half-wave rectification. (C) The same as in (B) but for human speech stimuli. For both stimulus classes a model mismatch can result in stimulus-dependent overestimation of the extent of the true RF. The cc values stated are the Pearson correlation coefficients between true and estimated receptive fields.