Fig. 3: Stable long-term recordings during naturalistic locomotion.

a, Position of one 3D-tracking sensor on the headstage during a 7.3-h-long ONIX recording during which the mouse was free to explore the 3D arena. Red trace and excerpt show one of multiple instances of the mouse spontaneously jumping from a lower to a higher tile. b, Video frames of the jump (the tether is too thin to be visible at this magnification), see Supplementary Video 1. c, Raw voltages and spike peak amplitudes from two channels at hour 1 (top) and hour 7 (bottom) of the recording. d, 3D position, heading and smoothed firing rate of entire recording. e, Same data as in d, for excerpt around jump. f, z-position, raw voltage trace example and sorted spikes from 71 neurons during the jump.