Extended Data Fig. 2: Rotational population dynamics in a spinal motor network across animals.
From: Movement is governed by rotational neural dynamics in spinal motor networks
a, The rhythmic firing rates in populations of spinal neurons in laminae VII-VIII shown in colors as a function of time and sorted according to phase with respect to a nerve (hip flexor). A representative trial from 5 experiments of approximately 10 s demonstrate similar sequential/rotational population activity. Animal used in Extended Data Fig. 1 is marked "*". b, The corresponding distribution of neurons having preferred phases among the population of rhythmic neurons. c, Population activity represented by first two PCs exhibit rotational dynamics. Scale bars: 250. d, Cumulative explained variance by principal components, indicating the population dynamics is low-dimensional, i.e. most of the variance is captured by few components.
