note

Typically, the second phase of biphasic simulation is more effective then the first phase. here are a few proposed explanations for this :
-  the fact that he second phase is twice the length of the first phase allows more current to flow through cell membrane

• more sodium channels can be activated in the second depolarizing phase if the first phase hyperpolarizes the cell membrane
• the two phases may activate different neurons with temporal offset, changing the integration of excitatory/inhibitory inputs

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