Extended Data Figure 6: Effect of context on PFC dynamics.

a, b, Responses from monkey A. Same conditions and conventions as in Fig. 2, but for activity projected into the two-dimensional subspace capturing the variance due to choice (along the choice axis) and context (context axis). Components along the choice axis are enhanced relative to the context axis (see scale bars). The population response contains a representation of context, which is reflected in the separation between trajectories in the motion and colour contexts along the axis of context. The contextual signal is strongest early during the dots presentation. a, Effects of context (motion context versus colour context), choice (choice 1 versus choice 2), and motion input (direction and coherence, grey colours). b, Same trials as in a, but averaged to show the effect of the colour input (blue colours). c, d, Responses from monkey F, same conventions as in a, b. As in Extended Data Fig. 7a–f, we subtracted the across-condition average trajectory from each individual, raw trajectory (see Supplementary Information, section 6.10). The underlying raw population responses are shown in Extended Data Fig. 5f–i, and confirm that the representation of context is stable throughout the dots presentation time (Extended Data Fig. 5i).