Figure 7.
LFP amplification for uniform synaptic input to Ih-like conductance requires correlation and a minimum population size. A, B, For cell populations with increasing radius (A), the average of the PSD modulation between 1 and 10 Hz, is shown for different levels of synaptic correlation (B). The PSD modulation is defined as the LFP-PSD from a population with a quasi-active Ih-like conductance, divided by the LFP-PSD from a passive model, similar to Figures 2 and 3. A population with the full radius but half the original cell density is also shown (dark red, dashed line). C, The same data as in B, but with the average PSD modulation between 1 and 10 Hz for different correlation levels (c) as a function of the population radius.