2021, 22, 8414 3 of 33 porters in the cell membrane have important contribution in the 'membrane clock', in- cluding the hyperpolarization activated "funny" current If, L-type and T-type Ca2+ cur- reCnat2s+(IcCua,rLr, eICnat,Ts),(IdCeal,aLy, IeCda,rTe)c, tdifeielarypeodtarsescit...