Fig. 1: Sequential dynamics in the hippocampus.
From: Dynamical modulation of hippocampal replay through firing rate adaptation
a Schematic of theta phase precession at the single-neuron level and theta sequences at the population level. b Example theta sequences in empirical data when an animal performed a W-track spatial alternation task. Top panel: theta-band (5–11 Hz) filtered LFP. Middle panel: decoded position; linearised from the central arm (C) to the right arm (R) and then to the left arm (L). The posterior probability is plotted as colour values with the blue line representing the actual location of the animal. Bottom panel: running speed of the animal. c Schematic of replay sequences. d Example replay sequences in empirical data when the animal stopped at the end of the right arm (marked by the blue line). Grey shading indicates periods of detected SWRs. e Diverse replay dynamics. From left to right: stationary replay (decoded positions stay at a single location), diffusive replay(decoded positions slowly propagate), and superdiffusive replay (decoded positions make abrupt transitions to distant locations). Grey shading indicates periods of detected SWRs.
