Accounting for all the inhibitory synaptic inputs to the HE(8), HE(10), and HE(12) heart motor neurons
| HE(8) | HE(10) | HE(12) | Preparation | |||
|---|---|---|---|---|---|---|
| Unaccounted IPSCs | Total # of HN spikes | Unaccounted IPSCs | Total # of HN spikes | Unaccounted IPSCs | Total # of HN spikes | |
| 0 | 304 | Not recorded | 5 | 336 | 7/23 | |
| 0 | 528 | Not recorded | Not recorded | 8/1B | ||
| 3 | 307 | Not recorded | Not recorded | 8/4A | ||
| 0 | 322 | 4 | 382 | Not recorded | 8/13 | |
| 0 | 459 | Not recorded | 8 | 393 | 8/15 | |
| 2 | 459 | 1 | 454 | 2 | 461 | 8/22B |
| 0 | 384 | 0 | 376 | 4 | 374 | 9/3 |
| Not recorded | 0 | 399 | Not recorded | 9/4A | ||
| 0 | 373 | Not recorded | Not recorded | 9/8B | ||
| 0 | 328 | 0 | 242 | 0 | 349 | 9/15 |
| 0 | 366 | 0 | 410 | 0 | 374 | 9/18A |
| 0 | 421 | 0 | 369 | 11 | 381 | 9/22A |
| 2 | 445 | Not recorded | Not recorded | 9/22B | ||
In 26 heart motor neurons [HE(8), HE(10), and HE(12)] from 13 preparations, IPSCs were assigned to each spike in two bursts of the four premotor heart interneurons based on the conduction delay time (see Results). The total number of spikes in the two bursts in the four premotor heart interneurons is given. The number of unaccounted IPSCs is given with a “0,” indicating that no unaccounted IPSCs were found. In the worst case, the HE(12) motor neuron from prep 9/22A, 11 unaccounted IPSCs were found, which is 2.8% of the total number of spikes (381) recorded from the interneurons.