| Rising Phase |
| Falling Phase |
|
|
|
| Na + Channels Close; |
||
| K+ Channels Open |
||
| Na + Channels Open |
| Na + |
| - |
| + |
| + |
| - |
| - |
| + |
| + |
| + |
| + |
| - |
| K+ |
| + |
| + |
| - |
| - |
| + |
| + |
| - |
| + |
| + |
| + |
| + |
| - |
| - |
| - |
| Na + |