Fig. 5.

Contribution of subthreshold conductances to the steady-state total conductance of TC neurons and establishment of RMP. Stacked area representations show the voltage-dependent contribution of the subthreshold conductances as nonoverlapping percentages of total conductance (sum of absolute current values at every voltage point is 100%). RMP (vertical lines; see Table 1) occurs at the membrane potential at which inward conductances (tones of red and yellow) equal outward conductances (tones of blue) at 50% (horizontal lines). Top right panel (All on) shows the contribution of all 7 conductances, whereas the other panels show the reconfiguration of the contributions after each of the subthreshold conductance is turned off one by one (as indicated above each panel).