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. 2012 Jul 12;8(7):e1002594. doi: 10.1371/journal.pcbi.1002594

Figure 7. Model comparisons to receptive fields from auditory midbrain and thalamus.

Figure 7

An overcomplete sparse coding model trained on spectrograms of speech predicts Inferior Colliculus (IC) and auditory thalamus (ventral division of the medial geniculate body; MGBv) spectro-temporal receptive fields (STRFs) consisting of localized checkerboard patterns containing roughly four to nine distinct subfields. (a) Example STRFs of localized checkerboard patterns from two Gerbil IC neurons [31], one cat IC neuron [33], and one cat MGBv neuron [34] (top to bottom). Data courtesy of N.A. Lesica (top two cells) and M.A. Escabí (bottom two cells). (b) Elements from the four-times overcomplete, L0-sparse, spectrogram-trained dictionary with similar checkerboard patterns as the neurons in panel a.