Figure 6.

LFP components that predict firing rate. Dark gray bars indicate the percentage of neurons in each region that exhibited positive correlations between firing rate and a particular LFP feature; light gray bars show the percentage of neurons in each region that exhibited negative correlations. The bars on the left indicate the proportions of neurons whose firing rates were correlated with power in each narrow frequency band: delta (2–4 Hz), theta (4–8 Hz), alpha (8–12 Hz), beta (12–30 Hz), and gamma (30–150 Hz). Each neuron may be counted in at most one direction (i.e., either positive or negative) per narrow frequency band. The bars on the right indicate the proportions of neurons whose firing rates were correlated with broadband power (i.e., broadband-shift neurons).