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. Author manuscript; available in PMC: 2018 Mar 20.
Published in final edited form as: Nature. 2017 Jul 19;548(7665):92–96. doi: 10.1038/nature23020

Figure 3. PPC populations were more coupled than AC populations.

Figure 3

a, For a PPC neuron with high coupling index, single trial responses (magenta) and predicted responses from the uncoupled (cyan) and coupled (black) models. b–c, Prediction performance of the coupled and uncoupled models for all AC and PPC neurons (circles). d, Cumulative distribution of the coupling index in AC (red) and PPC (blue) neurons. *** indicates p < 0.001, KS test. e, Coupling index in coupled model variants using as coupling predictors the mean population activity, 3–12 factors extracted from the population activity, or all other simultaneously imaged neurons. *** indicates p < 0.001, rank sum test. f, Mean coupling index in AC (red) and PPC (blue) when coupling predictors were shifted by different temporal lags relative to the predicted neuron’s activity. Error bars indicate mean ± sem. * indicates p < 0.05; ** p < 0.01; *** p < 0.001; rank sum test comparing PPC vs. AC. Only neurons with fraction explained deviance > 0.1 in the coupled model were included in panels d–f (n = 174/329 AC neurons and n = 185/386 PPC neurons).

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