FIG. 1.

(Color online) Diagrams of trial structure. (a) Diagram of the spatial location of the four streams (top) and a corresponding screenshot of the visual prompt (bottom) showing how the four spatial locations were represented on screen, and the color cueing which streams are to-be-attended. (b) Schematic trial time course showing a semantic trial in the spatially non-adjacent, divided attention condition. To-be-attended streams have light backgrounds, to-be-ignored streams have darker backgrounds. The width of the small rectangles corresponds to actual word durations; rectangles for oddball words have light text on darker backgrounds. (The information in this figure may not be properly conveyed in grayscale.)