Correlation coefficients for different feature sets.

Each row represents the correlation coefficient between the model and human similarity matrix using a direct Euclidian distance the specific feature itself (left); on a reduced dimension of the features (middle column) or using the Gaussian kernel distance (right column). Auditory Spectrum: time-average of the cochlear filterbank; Global Spectro-temporal Modulations: model STRFs averaged in time and frequency; Separable Spectro-temporal modulations: model STRFs averaged separately in rate and scale, and then in time; Full cortical model: STRFs averaged in time; Neurophysiological STRFs: as the full cortical model, but with STRFs collected in primary auditory cortex of ferrets.