The dynamic range (H), and glutamate release threshold (V10) (I) show differences for the three clusters. Cluster 1 is composed of linear synapses with wider dynamic range and lower threshold compared to the other clusters. Pillar synapses are depicted as white-filled circles, and modiolar ones are depicted as gray-filled circles. Box plots indicate first quartile (25th percentile), median and third quartile (75th percentile) with whiskers reaching from 10-90%. The clusters were compared by one-way ANOVA test, followed by a posthoc Tukey's test. * p ≤ 0.05, ** p ≤ 0.01, *** p ≤ 0.001 