Kenyon cell population | n | Frequency (Hz) | Amplitude (pA) | Rise time (ms) | Decay τ (ms) | IR (GΩ) | AR (MΩ) |
---|---|---|---|---|---|---|---|
OK107, GFP+ | 14 | 0.24 ± 0.07 | 4.0 ± 0.3 | 1.53 ± 0.09 | 5.23 ± 0.41 | 1.00 ± 0.05 | 14.7 ± 0.4 |
Wild type | 6 | 0.19 ± 0.07 | 4.3 ± 0.5 | 1.51 ± 0.11 | 6.73 ± 1.43 | 0.99 ± 0.09 | 14.1 ± 0.6 |
201Y, GFP± | 5 | 0.26 ± 0.07 | 3.8 ± 0.2 | 1.23 ± 0.15 | 4.85 ± 0.38 | 1.06 ± 0.16 | 14.8 ± 1.3 |
201Y GFP- | 6 | 0.22 ± 0.07 | 4.9 ± 0.6 | 1.21 ± 0.14 | 4.45 ± 1.31 | 1.13 ± 0.11 | 13.6 ± 1.0 |
Data were determined from cells in which stable whole-cell recordings were maintained for at least 3 min. The amplitude, rise time, and decay data (mean ± SEM) were determined from the ensemble average mEPSCs, constructed from 18-255 individual events in each neuron recorded at a holding potential of -75 mV. Decay time constant was determined from a single exponential fit (90-10%). The criteria for inclusion of individual mEPSCs were a rise time <2.5 ms and an amplitude of >3 pA. The input resistance (IR) and access resistance (AR) for each cell were determined on-line using the membrane test function (Clampex 9.0; Molecular Devices). No significant differences were detected in these properties between the different Kenyon cell populations examined (ANOVA, p > 0.05).