Figure 3: The distribution of the number of relevant image features that affect V2 responses after factoring out position invariance.

(a) The total number of significant dimensions of J (features, 13.4 on average). (b,c) The distribution of excitatory (mean 7.6) and suppressive (mean 5.8) features. All distributions are non-unimodal with P=0.0145, 0.0036, 0.0003, respectively, for the Hardigans’ dip test, N=80.