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Flexible neural connectivity under constraints on total connection strength

Fig 3

Kenyon cell degree distributions in larval D. melanogaster.

(a) Distribution of number of postsynaptic partners for larval KCs. Shaded histograms: empirical distribution. Solid lines: the marginal simplex area distribution at the maximum likelihood value of α, after integrating out the number of synapses against its empirical distribution. Dotted lines: the maximum likelihood binomial distribution. (b) Lower bound for the log evidence ratio (log odds) for the fixed net weight and binomial wiring models. Positive numbers favor the fixed weight model. Evidences computed by a Laplace approximation of the marginalization over the parameters. (c) Lower bound for the log odds for the fixed net weight and bounded net weight models; positive numbers favor the fixed weight model. (d) Log likelihood of the fixed net weight model () as a function of the scaling between synapse counts and net synaptic weights, α. (e-h) Same as (a-d) but for inputs to larval KCs.

doi: https://doi.org/10.1371/journal.pcbi.1008080.g003