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High-Fidelity Coding with Correlated Neurons

Figure 5

Number of encoded stimuli for independent versus correlated populations.

A, B. Schematics of the optimal arrangement of the probability distributions for independent (A) and correlated (B) populations. Each set of contours represents the log probability distribution of neural activity given a stimulus (hotter colors indicate higher probability). Spacing is set by the criterion that adjacent pairs of distributions have a discrimination error threshold . C. Number of stimuli encoded at low error, per neuron, versus , for correlated (thin dashed line for , thick dashed line for ) and independent (solid lines) populations, for different values of the error criterion, (colors). D. Number of encoded stimuli per neuron, for correlated (thin dashed line for , thick dashed line for ) and independent (solid lines) populations, versus , for different values of the number of neurons, (colors).

doi: https://doi.org/10.1371/journal.pcbi.1003970.g005