Fig. 4: Rotational plane differs substantially between reach conditions.
From: Reach-dependent reorientation of rotational dynamics in motor cortex
a The alignment index quantifies the overlap between two rotational planes. b Alignment indices between corresponding (same-frequency) rotational planes on pairs of reach conditions (colored) and distribution expected by estimation noise (gray). c Subspace excursion angles for corresponding rotational planes across conditions (blue), along with angles expected by estimation noise. Line, mean; shaded, 1 standard deviation. d Total rotational variance of a condition vs. the condition’s variance in the first jPCA plane. e The “misalignment” hypothesis: all conditions are equally rotational, but some rotate in planes orthogonal to the jPCA plane. f Alignment index between a condition’s rotational planes and the first jPCA plane, vs. the condition’s variance captured by jPCA. Data shown from M1-J.
