Table 3:
Statistics of Quadratic Fit to Correlation as a Function of Stimulus Filter ($k$) and Postspike Filter ($h$) Heterogeneity.
HeterogeneityNetwork Size234567
$k$ $R2$ 0.0018 0.0123 0.0076 0.0149 0.0212 0.0357
$p$-value for $F$-statistic versus Constant 0.003 $6.0×10-18$ $2.2×10-11$ $1.4×10-21$ $1.6×10-30$ $2.9×10-51$
$h$ $R2$ 0.0199 0.0159 0.0166 0.0156 0.0232 0.0356
$p$-value for $F$-statistic versus Constant $1.1×10-28$ $4.6×10-23$ $5.3×10-24$ $1.4×10-22$ $2.4×10-33$ $4.4×10-51$
HeterogeneityNetwork Size234567
$k$ $R2$ 0.0018 0.0123 0.0076 0.0149 0.0212 0.0357
$p$-value for $F$-statistic versus Constant 0.003 $6.0×10-18$ $2.2×10-11$ $1.4×10-21$ $1.6×10-30$ $2.9×10-51$
$h$ $R2$ 0.0199 0.0159 0.0166 0.0156 0.0232 0.0356
$p$-value for $F$-statistic versus Constant $1.1×10-28$ $4.6×10-23$ $5.3×10-24$ $1.4×10-22$ $2.4×10-33$ $4.4×10-51$

Notes: Correlations were prewhitened for the two time series to ensure unbiased estimates. Bold text corresponds to quadratic fits where the optimal level of heterogeneity is not in the interior.

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