Neural Population Dynamics during Reaching Are Better Explained by a Dynamical System than Representational Tuning.

As seen in Fig 6 , the PMd/M1 data contained robust rotational structure explaining 56% of the variance in the first two planes (40% in the first plane), an RGR of 0.77 over all jPCA planes, a circularity of 0.63, and the rotational structure was highly significant ( p < 0.001, CMPT with 1000 repetitions).

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