Data recorded from rat hippocampus, while a rat ran a single pass on a linear track. Top plot: raw LFP (gray) and LFP filtered in the theta band (here: 4-12 Hz, black). Middle plot: spikes recorded simultaneously from 107 pyramidal cells in hippocampal CA1. Pyramidal cells are ordered along the y axis by their peak firing positions along the track (magenta and green indicate spikes from example neurons shown in more detail in other plots of the original paper, but not here). Bottom plot: spike-decoder-based probability estimates (color-coded) of the rat’s position, referred to as theta sequence. The beginning and end of each theta sequence are indicated by vertical lines running across the three panels (red for top and middle, white for bottom plot). In the bottom plot, the superimposed short oblique white lines indicate the speed of each theta sequence. In the middle (bottom) plots, the superimposed long oblique blue (black) line indicates the running trajectory of the animal. Adapted and modified from Feng et al.59
