Fig. 3.

Feature-based attention effects on FEF and LIP neurons with target-related enhancements. Normalized population average firing rates in (A) FEF and (B) LIP aligned on array onset when the first saccade was directed away from the RF. Only units with target-related enhancements of 10% or above are included. Responses to share color and share shape distractors were similar; thus, they were combined (blue). (C) Cumulative distribution of feature attention latencies in FEF (blue) and LIP (red) computed from individual units of this subpopulation. Other conventions are as in Fig. 2.