Stimuli include eight different square wave spiral gratings subtending 10 degrees of visual angle as well as the color words "blue" and "green." The color words appeared as white on a gray background. Each stimulus appeared on the screen for 116 ms. The triggers or event ID's of each stimulus are as follows:
1 - Light Pink Spiral 2 - Dark Pink Spiral 3 - Light Blue Spiral 4 - Dark Blue Spiral 5 - Light Green Spiral 6 - Dark Green Spiral 7 - Light Orange Spiral 8 - Dark Orange Spiral 9 - "green" 10 - "blue"