Using SI to evaluate neural representations across brain regions.

a, SI in the original space of the head direction angle, velocity, and (angle, velocity) for ADn, PoS, and ADn+PoS. Two-way ANOVA for features: F(2,2) = 80.8, pb, Relationship between SI and the number of Isomap dimensions used to embed the neural activity of the different brain regions. c, Example of Isomap 3D embeddings from the different brain regions on the same mouse. Color coded by head angle (top row) and velocity (bottom row). d, SI for angle (top) and velocity (bottom) as a function of the number of neighbors (local vs global), for ADn and PoS.