Asymmetry in Signal Propagation between the Soma and Dendrites Plays a Key Role in Determining Dendritic Excitability in Motoneurons
Figure 6
Dependence of input resistance at the dendrites on the DC VA factors.
Input resistance (RN,D, gray dots) was measured at individual points of the motoneuron dendrites at the same distance with respect to the total current injected to the dendrites (see the stimulation protocol used for the VADSDC). The measured RN,D was superimposed by the RN,D (black line) that was predicted from fitting curves to the DC VA data using the equation (RN,D(Dpath) = RN*VASDDC(Dpath)/VADSDC(Dpath) where RN is input resistance at the soma (Dpath = 0)). Note the agreement between the predicted and measured input resistance in the dendrites. The poor fit at the distal distance was attributed to the error between the VADSDC data and its fitting curve (see Figure 1(A)).
