Fig. 8.

Histograms of PP ratios at the end of a stimulus train using the common baseline and individual baseline methods. A: histogram of cells (pooled across ages) based on IPSP₁₀-to-IPSP₁ (IPSP₁₀/IPSP₁) ratios measured using the common baseline method. An IPSP₁₀/IPSP₁ ratio of 0.5 was used to differentiate a type I response (IPSP₁₀/IPSP₁ ≥ 0.5) and a type II response (IPSP₁₀/IPSP₁ < 0.5). B: histogram of cells (pooled across ages) based on IPSP₁₀/IPSP₁ ratios measured using the individual baseline method.