Fig. 4.

Analysis of the fraction of variance of average firing rate accounted for by different regression models. Each graph shows a collection of cumulative distributions of variance accounted for (VAF) when different regression models were applied to the same data. A: on-direction pursuit initiation. B: off-direction pursuit initiation. C: on-direction learned component of pursuit. D: off-direction learned component of pursuit. Key is: Eq. 1, acc/vel; Eq. 2, acc/vel/pos; Eq. 3, acc+−/vel; Eq. 4, acc+−/vel/pos.