Extended Data Figure 4. Somatic bursting properties, related to Figure 1.

Somatic bursting properties (Etruscan shrew n = 22, mouse n = 59, gerbil n = 46, rat n = 93, ferret n = 23, guinea pig n = 30, rabbit n = 33, marmoset n = 34, macaque n = 29, human n = 104).

a, Minimum instantaneous interspike interval (ISI) on a log scale as a function of injected current above rheobase. The lines and shaded error bars represent population medians and 95% confidence intervals.

b, Percentage of neurons exhibiting bursts with different frequency thresholds at rheobase.

c, Same as b but at double the rheobase.

d-e, Box plots denote the median and 25–75th percentiles.

d, Maximal action potential amplitude reduction (p < 10⁻¹⁸ Kruskal-Wallis, χ ² = 107 & 9 df).

e, Maximal action potential d Wdt reduction (p < 10⁻¹⁵ Kruskal-Wallis, χ ² = 95 & 9 df).