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. 2013 Nov 14;9(11):e1003336. doi: 10.1371/journal.pcbi.1003336

Figure 3. Schematic illustration of the impact of correlations on spike-rate distributions for frequency and intensity discrimination.

Figure 3

A. Horizontal slices across spike-rate distributions evoked by two stimuli differing in frequency in two units with BFs below and above the reference-stimulus frequency. The spike rate of the unit (i) with BF lower than the reference frequency is plotted along the x-axis; the spike rate of the unit (j) with BF higher than the reference frequency is plotted along the y-axis. Blue: horizontal slice across the spike-rate distribution for the reference tone (1000 Hz, 50 dB SPL); red: horizontal slice across the spike-rate distribution for the higher-frequency tone. B. Same as A, but for an intensity change.