Nerve signal
Interactions
- click a dendrite: a small input bump spreads and decays; three or four clicks close together make the cell fire
- click the bare axon or a node: a stimulus starts two pulses, one each way; a second click too soon fails in the refractory wake
- click a myelin sheath: it peels away, the pulse crawls across that stretch, and the sheath wraps back after about 7 s