On the other hand, potassium losses in the watery stool can have serious consequences since potassium is one of two principal electrolytes needed in
the propagation of an action potential across the cell membrane.
We used a transverse hippocampal slice preparation with two extracellular recording electrodes to capture
propagation of compound
action potentials (CAPs) elicited by a stimulating electrode in the presence
of synaptic transmission blockers (CNQX, APV, and picrotoxin).