3.2 ADDITIVE NEURONAL DYNAMICS Passive Membrane Decay Passive-decay rate ,>0 scales the rate to the membrane's resting potential. xi =-Ajxi solution:. ,()=x,(0)e4 Passive-decay rate measures:the cell membrane's resistance or friction"to current flow. 2006.10.92006.10.9 Passive-decay rate Ai  0 scales the rate to the membrane’s resting potential. solution : Passive-decay rate measures: the cell membrane’s resistance or “friction” to current flow. i i i x = −A x • 3.2 ADDITIVE NEURONAL DYNAMICS ◆ Passive Membrane Decay -A t i i i x (t) = x ( 0 )e