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(A) A pair of PV-FS cells electrically coupled and reciprocally connected through chemical connections. Step-coupling coefficient = 1.8 and 1.9%. Spike-coupling coefficient = 0.32 and 0.40% (2-month-old animal). (B) Histogram summarizing paired-pulse ratios (PPRs) from 24 connections. (C) Plot comparing the amplitude of IPSP2 versus IPSP1 for individual events (R = 0.061). The paired-pulse ratio in this connection was 0.61 (3-month- and 2-week-old animal).
