Coding capacity of heterogeneous populations.

<p><b>A.</b> Number of encoded stimuli <i>versus</i>, for an independent population divided into different numbers of pools, (colors); the error criterion is . <b>B.</b> Ratio of the number of encoded stimuli in a correlated population and the number of encoded stimuli in a matched independent population, for different numbers of pools (colors). <b>C.</b> Optimal pool size, , <i>versus</i> error criterion, , for correlated (dashed line, ) and independent (solid line) populations. <b>D.</b> Optimal capacity per neuron, , <i>versus</i> error criterion, , for correlated (dashed line, ) and independent (solid line) populations.