Table 2.
Electrophysiological properties of RA projection neurons
| Stimulus– response function (mV · msec−1 · μA−1) | Response threshold (μA) | RInput (MΩ) | Baseline firing rate (Hz) | Current–frequency relation (Hz/nA) | Accommodation rate (@400 pA, Hz/ISI) | Spontaneous EPSC amplitude (<30 pA), pA | Spontaneous EPSC frequency (Hz) | RSeries(MΩ) | |
|---|---|---|---|---|---|---|---|---|---|
| Fledgling | 89 ± 14 | 9.2 | 54.7 ± 7.3 | −0.93 ± 0.13 | |||||
| (n = 7) | (1) | (6) | (4) | ||||||
| Juvenile | 0.070 ± 0.017 | 217 ± 51 | 86 ± 7 | 12.0 ± 0.8 | 67.3 ± 3.5 | −0.44 ± 0.05 | 8.9 ± 0.1 | 0.27 ± 0.06 | 20.8 ± 0.5 |
| *p < 0.01a | (2013 events from 14 cells) | ||||||||
| (n = 12) | (12) | (21) | (13) | (23) | (18) | (13) | (13) | ||
| Adult | 0.178 ± 0.051 | 58 ± 16 | 91 ± 15 | 15.3 ± 2.0 | 70.8 ± 3.4 | −0.39 ± 0.06 | |||
| **p < 0.05a | **p < 0.02a | *p < 0.04b | *p < 0.01a | ||||||
| (n= 8) | (8) | (9) | (9) | (19) | (14) | ||||
| LMAN-lesioned juvenile | 0.169 ± 0.035 | 85 ± 20 | 82 ± 7 | 11.7 ± 0.6 | 70.9 ± 4.5 | −0.50 ± 0.08 | 9.8 ± 0.1 | 0.32 ± 0.12 | 21.1 ± 0.5 |
| **p< 0.01a | **p < 0.04a | **p< 0.0001a | |||||||
| (n= 13) | (13) | (18) | (9) | (19) | (18) | (1692 events from 8 cells) | (7) | (7) |
All values: mean ± SEM. *Versus fledgling; **versus juvenile control; statistically significant differences inbold.
F2-a
Mann–Whitney U test: used when one or more of the distributions under comparison was significantly non-normal based on the Shapiro-Wilk test.
F2-b
Two-tailed Student's t test assuming equal variance: used when both distributions were normal and their variances equal.