Fig. 4.
Changes in response amplitude during neurotrophin application. The ordinate represents the ratio of the mean amplitude of field responses (open circles) calculated from 30 responses for 25–30 min or that of EPSCs (filled circles) from 30 responses for 15–20 min after starting the neurotrophin application to that of 60 responses just before the application. Short horizontal bars and vertical bars represent means and twice the SEM for the same group of slices or cells, respectively. The number of slices or cells used for each test is shown at the top of each column.