Fig. 6
From: Decoupling of timescales reveals sparse convergent CPG network in the adult spinal cord
Population spiking of lumbar neurons. a Silicon multi–electrode arrays (right) were inserted ventrally into the medial–ventral horn in the lumbar spinal cord (left) of semi–intact preparation. b Three sample units and their waveforms recorded on the different shank electrode. c Touch–induced scratching (onset) has alternating hip flexor (blue top) and knee extensor (blue bottom, dD8). Filtered and Hilbert–transformed motor nerve as a phase reference of the rhythm (blue). Raster plot: The spiking activity of lumbar neurons (n = 72) has scattered rhythmic activity. d Spike–triggered phase histogram in polar plot (blue in c), for 8 sample neurons (with various unit numbers), show preferred phase (red star) as well as diversity in spiking. e Histogram of preferred phases (red stars in d) for the entire population (n = 72)
