Figure 3.

A bias to look at objects with the head and eyes aligned. (A, B) Multivariate kernel density estimates of the accumulated x- and y-coordinates of eye gaze using a head-mounted eye-tracker for gaze to novel objects where (A) looks are shorter than three seconds and (B) looks are equal to or longer than three seconds at 12, 15, 18, 21, and 24 months of age. Inner circles encompass a 10^o radius from the center of the head camera image whereas outer circles encompass a 20^o radius from the center of the head camera image. Color indicates density of the distribution, with more yellow colors indicating greater density.