Figure 2.
Correlations in synaptic input to distal or proximal dendrites amplify the LFP signal while retaining the effect of Ih. A, B, LFP-PSD in apical and somatic regions resulting from distal tuft synaptic input (A), with different levels of correlation, c, between the synaptic inputs (B, columns), to a population of 10,000 cortical layer 5 pyramidal cells. Different curves correspond to the different cell models used in Figure 1. C, LFP-PSD at 1 Hz as a function of the synaptic input c value. D, The PSD modulation at 1 Hz as a function of the synaptic input correlation. The PSD modulation is defined as the LFP-PSD from the passive + Ih model (blue curves) or the passive + frozen Ih model (cyan curves), divided by the LFP-PSD from the passive model. E–H, Same as A–D, but with basal synaptic input. The LFP-PSDs are shown in log10 scale with units of μV2/Hz.