Table 2.
Spark Frequencies in R. temporaria
| 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|
| Fiber No. | Ringer [K+] | Time | F′/F | No. of sparks | Frequency |
| mM | min | sarcomere−1 s−1 | |||
| z051899c | 2.5 | 16 | 6 | 0.024 | |
| z052099a | 2.5 | 20 | 46 | 0.149 | |
| z052599a | 2.5 | 9 | 9 | 0.042 | |
| 7.5 | 16 | 1.15 | 48 | 0.176 | |
| 2.5 | 14 | 10 | 0.039 (0.93) | ||
| z052599b | 2.5 | 11 | 29 | 0.120 | |
| 10 | 9 | 1.23 | 34 | 0.190 | |
| 2.5 | 20 | 53 | 0.150 (1.25) | ||
| z082499b | 2.5 | 18 | 3 | 0.008 | |
| z111899a | 2.5 | 4 | 0 | 0.000 | |
| z112399a | 2.5 | 5 | 1 | 0.006 | |
| z112499b | 2.5 | 4 | 0 | 0.000 | |
| z120399a | 2.5 | 4 | 4 | 0.046 | |
| z120999a | 2.5 | 11 | 5 | 0.019 | |
| z052000b | 2.5 | 8 | 4 | 0.012 | |
| 10 | 9 | 1.14 | 8 | 0.036 | |
| z052600a | 2.5 | 9 | 9 | 0.044 | |
| 13 | 24 | 1.31 | 177 | 0.261 | |
| 2.5 | 16 | 24 | 0.054 (1.23) | ||
| Mean ± SEM | 2.5 (N = 12) | 14.1 ± 2.7 | 14.4 ± 7.2 | 0.041 ± 0.015 | |
| 13 (N = 1) | 24 | 1.31 | 177 | 0.261 |
Presentation is the same as Table . Sarcomere length, 3.02 ± 0.05 μm.