impressed magnetic current

What is ment by the magnetic current? and what is the difference between the magnetic current and the electrical current?

As you know the term δB/δt in Ampere's law is named as the electric displacement current. In view of the symmetry of the Maxwell's equations the term δB/δt is named magnetic displacement current. Also, the impressed magnetic and electric currents are viewd as the sources of magnetic and electric fields, respectively.
For more complete explanation, please refer to any electromagnetic books.