Neural Population Dynamics during Reaching Are Better Explained by a Dynamical System than Representational Tuning
Fig 6
Significant rotational structure in PMd/M1 data and RNN model.
Comparison of rotational dynamics for (a) observed, (b) permuted without covariance matching, and (c) covariance-matched data in the first jPCA plane. p-values in a are from the CMPT for the rotational goodness-of-fit ratio (RGR: ) in all jPCA planes. Conditions and neurons were randomly down-sampled in the PMd/M1 data to match the RNN model. Data is plotted for 200 ms regardless of time period used to generate statistics. Colors are based on the preparatory activity in the first jPC.