Figure 5.

RRP size estimates using strong depolarizations match sucrose estimates. A, Representative responses to hyperkalemic solution (100 mm K⁺) application in the presence of 200 μm kynurenate, shown in the presence and absence of 1 μm NBQX. Dashed lines indicate the portion of the response used to estimate RRP size, with the NBQX-insensitive component subtracted out in the analysis. B, Summary of train, sucrose, or strong depolarization (100 K⁺) estimates of RRP size, expressed as percentages of the sucrose estimates of RRP size performed in the same neurons (n = 13). Error bars represent SEM.