STRF analysis of a PEG neuron.

A. The estimated STRF of PEG neurons generally provided characterizations of neurons’ selectivity that diverged from the CortRF, as seen here. The 2-dimensional convolution of a speech spectrogram with the estimated STRF suggested shorter latency in the neural representation than when convolved with the CortSTRF. B–F. Statistical tests for goodness-of-fit, both for each and over all speech and TORC stimulus repetitions withheld during model estimation, indicated estimated models were well-matched to the observed spiking statistics. Additionally, the withheld spiking responses were closely matched by predicted CIFs. Spectrograms and STRFs are normalized for visualization.