“Tonic” fiber in frog | Slow fiber in (zebra) fish | Mammalian AP-less fiber | Mammalian type I fiber | |
---|---|---|---|---|
Innervation | En grappe/myoseptal | Myoseptal | Multiple innervation | En-plaque |
Action potential | (−) | (−) | (−) | (+) |
Synaptic current kinetics | Slow | Slow | NA | Slow? |
AChR subunits | NA | αβδ | NA | NA |