I was reading this page which says:
What Edison discovered (and it was promptly dubbed the "Edison effect") was that electrical current doesn't need a wire to move through. It can travel right through a gas or even a vacuum.
Maxwell introduced the term displacement current for explaining how the capacitor is passing an alternating current through its plates.
But what I understand is that the displacement current does not move in the form of electrons, but it moves/passes in the form of circulating magnetic fields up to the other side of the plate.
The paragraph claims that the electrical current can move in vacuum. But it doesn't state the form of the current.
For the Edison effect in vacuum, is the current moving in the form of actual electrons or magnetic fields?